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<center>[[User_talk:Kieff/Archive0|Archive0 (2006-01-24)]]</center>
<center>[[User_talk:Kieff/Archive0|Archive0 (2006-01-24)]]</center>
<center>[[User_talk:Kieff/Archive1|Archive1 (2012-05-22)]]</center>


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==Image copyright problem with Image:CDMS_parameter_space_2004.png==
Thanks for uploading [[:Image:CDMS_parameter_space_2004.png]]. However, the image may soon be deleted unless we can determine the copyright holder and copyright status. The [[Wikimedia Foundation]] is very careful about the images included in [[Wikipedia]] because of [[copyright law]] (see Wikipedia's [[Wikipedia:Copyright|Copyright policy]]).


== Surprise, surprise ==
The copyright holder is usually the creator, the creator's employer, or the last person who was transferred ownership rights. Copyright information on images is signified using copyright templates. The three basic license types on Wikipedia are [[open content]], [[public domain]], and [[fair use]]. Find the appropriate template in [[Wikipedia:Image copyright tags]] and place it on the image page like this: <code><nowiki>{{TemplateName}}</nowiki></code>.


Parabéns pela animação! Foi uma bela surpresa verificar (a posteriori) que estava a avaliar o trabalho de um conterrâneo! -- [[User:Alvesgaspar|Alvesgaspar]] ([[User talk:Alvesgaspar|talk]]) 18:23, 14 August 2012 (UTC)
Please signify the copyright information on any other images you have uploaded or will upload. Remember that images without this important information can be deleted by an administrator. If you have any questions, feel free to contact me or ask for help at [[Wikipedia talk:Image copyright tags]]. Thank you. -- [[User talk:Carnildo|Carnildo]] 07:35, 6 February 2006 (UTC)


:Também achei excelente a animação. Bravo! [[User:FilipeS|FilipeS]] ([[User talk:FilipeS|talk]]) 14:37, 17 August 2012 (UTC)
== Copyrights on [[:Image:CDMS_parameter_space_2004.png]] ==
==[[Wikipedia:Featured picture candidates/Line integral of scalar field]]==
<!-- comment to force linebreak -->
{| align=center border=0 cellpadding=4 cellspacing=4 style="border: 1px solid #CC9; background-color: #cfc"
|-
|[[File:Line integral of scalar field.gif|75px|center|]]
|{{center|1='''An image created by you has been promoted to [[Wikipedia:Featured picture|featured picture]] status'''}} Your image, '''[[:File:Line integral of scalar field.gif]]''', was nominated on [[Wikipedia:Featured picture candidates]], gained a consensus of support, and has been promoted. If you would like to nominate an image, please do so at [[Wikipedia:Featured picture candidates]]. Thank you for your contribution! [[User:Makeemlighter|Makeemlighter]] ([[User talk:Makeemlighter|talk]]) 17:23, 26 August 2012 (UTC)
|}


== Can you illustrate "covariant derivative"? ==
If you were paying a little more attention, you'd have noticed that a help desk page is liking to it. [[Wikipedia:Help_desk#Copyright_over_graphical_plots|Here it is]]. Basically, the original image was a fair use graphical plot, and I traced it by hand using a vector editor and created a PNG version of it. As I pointed out, I was wondering if the person can actually copyright the scientific data presented on the graphic. As far as I can see, nobody should be able to (it'd be considered trivial work, there's no creative content on it). The only reason it was fair use is because the original image was created directly by someone else, so I thought I could release my version on the PD.


I noticed that you have some really great animated illustrations here on Wikipedia. Recently there was a request on Talk:Covariant_derivative#Add_Images requesting some images, and I suggested the following:
So I'm aware of the copyright, but I decided to leave it as unknown until someone clears this out for sure. ☢ [[User:Kieff|Ҡieff]]⌇[[User_talk:Kieff|↯]] 14:08, 6 February 2006 (UTC)
:I'm not a good graphic artist, but here is a suggestion for a picture. Draw a circle on a flat sheet of paper. Travel around the circle at a constant speed. The derivative of your velocity, your acceleration vector, always points radially inward. Roll this sheet of paper into a cylinder. Now the (Euclidean) derivative of your velocity has a component that sometimes points inward toward the axis of the cylinder depending on whether you're near a solstice or an equinox. This is the (Euclidean) '''Normal''' component. The '''Covariant''' derivative component is the component parallel to the cylinder's surface, and is the same as that before you rolled the sheet into a cylinder. [[User:Cloudswrest|Cloudswrest]] ([[User talk:Cloudswrest|talk]]) 19:37, 2 January 2013 (UTC)


== Math markup errors in Eugenvalues and eigenvectors ==
:I'm not a copyright lawyer, but I think your image can be released into the public domain. I'd be more comfortable if you'd re-created it from the original data rather than from an image. --[[User:Carnildo|Carnildo]] 08:42, 8 February 2006 (UTC)


Hi,thanks for the note. I did check with preview and did not see THAT many errors. Will check again and fix as appropriate. --[[User:Jorge Stolfi|Jorge Stolfi]] ([[User talk:Jorge Stolfi|talk]]) 02:32, 4 February 2013 (UTC)
==Picture of the Day==
* I checked again and I did not see ANY serious math markup errors; on the contrary the math displays much better on my browser (Chrome with "render math as SVG" option). What are the errors that you see? --[[User:Jorge Stolfi|Jorge Stolfi]] ([[User talk:Jorge Stolfi|talk]]) 02:37, 4 February 2013 (UTC)
[[Image:Gospers glider gun.gif|thumb|100px|right|[[Wikipedia:Picture of the day/February 12, 2006|POTD]]]]
*Aha, I switched my Wikipedia preferences to "render as PNG", and now I see the errors you mention. Almost all of them are uses of "×" inside math, in place of \times. The MathJAX renderer understands some of those ISO-latin operator characters, but the Wikipedia server that creates the PNG images apparently doesn't. I will fix them. (By the way, consider using MathJAX with SVG instead of PNGs. It is the way forward it seems...) All the best, --[[User:Jorge Stolfi|Jorge Stolfi]] ([[User talk:Jorge Stolfi|talk]]) 02:51, 4 February 2013 (UTC)
Hi Kieff,
*I have fixed the errors with PNG option. Agree that <nowiki><math>...</math></nowiki> is too heavy with PNG. See talk page... --[[User:Jorge Stolfi|Jorge Stolfi]] ([[User talk:Jorge Stolfi|talk]]) 03:47, 4 February 2013 (UTC)


== A barnstar for you! ==
Just to let you know that your photo [[:Image:Gospers glider gun.gif]] is due to make an appearance as [[Wikipedia:Picture of the day|Picture of the Day]] on the 12th February. If you get a chance, you can check and improve the caption at [[Wikipedia:Picture of the day/February 12, 2006]]. -- [[User:Solipsist|Solipsist]] 19:03, 10 February 2006 (UTC)


{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
* Great picture, indeed (even though it's not a photo, I guess :-) )... Thanks for making it! congratulations!! --[[User:BACbKA|BACbKA]] 09:13, 12 February 2006 (UTC)
|rowspan="2" style="vertical-align: middle; padding: 5px;" | [[File:Original Barnstar Hires.png|100px]]
|style="font-size: x-large; padding: 3px 3px 0 3px; height: 1.5em;" | '''The Original Barnstar'''
|-
|style="vertical-align: middle; padding: 3px;" | thats some great work [[User:Ehypersonic|Ehypersonic]] ([[User talk:Ehypersonic|talk]]) 13:46, 8 February 2013 (UTC)
|}


== Maps ==
== Gyro animation ==


[[File:Gyroscope_wheel_animation.gif|right|gyro animation]]
Hi Kieff.


Hello, I've noticed, that the wheel precession directions in the gyro animation created by you are mixed up. They should be swapped to opposite, while keeping the current directions of wheel revolution and the external forces intact.
I noticed the map you made for [[Pangaea]] a year and a half ago. Would you consider making similar maps for [[Columbia (supercontinent)]], [[Rodinia]], and/or [[Pannotia]]? Maps would add greatly to each. You can find reference material from Christopher Scotese (e.g. [http://www.scotese.com/Rodinia3.htm]) if you're willing. Thanks a lot. [[User:Bcasterline|bcasterline]]<sup>[[User_talk:Bcasterline|talk]]</sup> 20:40, 15 March 2006 (UTC)


If you disagree, please take a bike wheel in your hands, start the rotation, apply a force in the same direction as on your animation, and you will see, that the real precession direction is in fact appears to be opposite to what it is on your animation.
== Searching for 3 movies ==
[[User:Atatevyan|Atatevyan]] ([[User talk:Atatevyan|talk]]) 07:47, 9 February 2013 (UTC)


:Thanks for the comment. I'll give it a look as soon as I can. &mdash; [[User:Kieff|Kieff]] | [[User_talk:Kieff|Talk]] 08:57, 9 February 2013 (UTC)
Thank for responding for my question:[[Wikipedia:Reference_desk/Humanities#Searching for 3 movies|Searching for 3 movies]]. You have suggested the first movie might be [http://www.imdb.com/title/tt0118787/ Buddy] and it defitely look like it. The other two movies apparently are [http://imdb.com/title/tt0098320/ Shocker] and [http://www.imdb.com/title/tt0105459/ Split Second] if you wish to know. I would really like to say thank you for being so nice and responding to my question. [[User:Tutmosis|Tutmosis]] 23:28, 16 March 2006 (UTC)


== Pedido ==
== Squaring the circle ==


Moving the discussion here because Tumblr is an awful medium to have conversations.
Oi Kieff,


So the video is [http://www.youtube.com/watch?v=uTpnWwolEBc here]. I got the ratios and magnitudes (and the idea) from [http://web.archive.org/web/20090321051029/http://www.geocities.com/liviozuc/fourier.html Livio Zucca] (he has some other cool math stuff), who was also an avid user of [[Algodoo]] (well, back in the days, it was called Phun). The output waveforms from each piston linkage were approximations of sine waves, the magnitudes of which I fudged a bit to make the resulting average as square as possible. I have a few more videos of contraptions made in Phun/Algodoo [http://www.youtube.com/playlist?list=PLB203EA44B57F2013 here] (I'll eventually turn them into GIFs). I think you should try out Algodoo. [[User:Conundrumer|Conundrumer]] ([[User talk:Conundrumer|talk]]) 21:48, 18 February 2013 (UTC)
Tudo bem? Meu nome e' Fernanda Viégas e eu estudo a Wikipedia ja' ha' alguns anos (voce pode ver um dos meus papers [http://alumni.media.mit.edu/~fviegas/papers/history_flow.pdf aqui]). Eu gostaria de lhe fazer algumas perguntas sobre a suas atividades como "illustrador" de artigos na Wikipedia. Eu estou super impressionada com o nivel das imagens, diagramas, e fotografias que eu tenho encontrado no site, e gostaria de aprender mais sobre a comunidade de pessoas que faz essas contribuicoes. Voce estaria disponivel p/ uma entrevista via email? &mdash; [[User:Fviegas|Fernanda]] 00:17, 4 April 2006 (UTC) | [[en:User talk:Fviegas|talk]]


::Oh, neat! So it's the a Fourier series for the radius based on angle. Pretty close to what I did with those polygons! Algodoo looks pretty cool, thanks for the suggestion.
==[[:Image:CDMS parameter space 2004.png]]==
Hi, I re-tagged the image as {{tl|PD-user}}. [[User:Renata3|Renata]] 07:08, 13 May 2006 (UTC)


==Category:Aspergian Wikipedians==
[[:Category:Aspergian Wikipedians]] which you have included on your user page has been proposed for deletion you can comment at [[Wikipedia:Categories for deletion#Category:Wikipedians by mental condition]]. The is also a proposal to create an association to meet the needs of users with mental health conditions. --[[User:Salix alba|Salix alba]] ([[User talk:Salix alba|talk]]) 18:49, 15 May 2006 (UTC)


"''What interval would you recommend? Is there a peak activity time where I should aim for?''"


I can't say I'm an expert at becoming Tumblr famous, but for now, you should try to maintain a steady stream of content so that people don't forget about you, ie ''try to publish at least one thing everyday''. When you make a lot of content at once, you can put it on queue so the content gets published steadily, instead of all at once. It's okay if you take a break and don't post anything for a period of time, but generally, Tumblr users like to see a variety of content, and seeing a lot of the same kind of posts consecutively wouldn't be as engaging as when the posts are seen individually (well unless they are directly referencing each other, but I guess you can just make a link). If you stick around Tumblr, you can get the feel of the attention span of the typical Tumblr user (not very long!). I hope this helps you gain more presence in Tumblr! ~[[User:Conundrumer|Conundrumer]] ([[User talk:Conundrumer|talk]]) 01:58, 20 February 2013 (UTC)


::Thanks. I still need to get a feel for tumblr. I barely follow anyone because the rhythm of things seems so incredibly intense and fast. I'm the sort of guy who likes to see everything, so that's a bit of a problem. I'll try to space things out more. Thanks! &mdash; [[User:Kieff|Kieff]] | [[User_talk:Kieff|Talk]] 02:06, 20 February 2013 (UTC)


== What software could you recommend for animated 3D math sketches? ==
== Fair-use images removed from your gallery ==


Sir, you are awesome, thanks a lot for your clean and deeply precise animation!
Hello, Kieff. I've removed some images from your gallery and replaced them with links, as they are copyrighted images that are being used under claims of fair use. Unfortunately, by Wikipedia policies, no fair-use images can be used on user pages; please see [[Wikipedia:Removal of fair use images]]. These images have not been deleted from any articles. If you have any questions, please let me know. —[[User:Bkell|Bkell]] ([[User talk:Bkell|talk]]) 06:53, 1 July 2006 (UTC)
Could you recommend some tools for creating animated math sketches like yours? I realize that it depends.
* 3dsMax, Maya, Blender seem to be overhead,
* CLUCalc is nice, but raster,
* to write custom scripts for SVG/pgf/TikZ is to reinvent a wheel.
[[User:Mclaudt|Mclaudt]] ([[User talk:Mclaudt|talk]]) 22:49, 24 March 2013 (UTC)


:The only one I can recommend is [[POV-Ray]]. It's great for technical drawings because you specify everything in terms of code, so it is very precise. The language for describing objects is pretty straightforward, but coding logic on it is a little bit a of a struggle.
==Re: Residents==
:But it has no visual feedback until you render things. This may be a problem if you don't have a good spatial intuition. [[:File:Rolling_Racers_-_Moment_of_inertia_(HD).ogv|Here's my latest POV-Ray creation]], with source code included if you want to try it out. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 22:58, 24 March 2013 (UTC)
Hi Kieff - I'm glad you like the Residents, and that I was at least partly responsible for you discovering them! If you like the residents, I'd also suggest you look for some music by [[Snakefinger]] and [[Renaldo and the Loaf]] :) [[User:Grutness|Grutness]]...''<small><font color="#008822">[[User_talk:Grutness|wha?]]</font></small>'' 05:58, 6 July 2006 (UTC)
::Thanks. It's sad that SDL has low abstraction possibilities. I think Mathematica has fantastically flexible and expressive syntax. And some intermediate tool could help develop complex math visualisation. [[User:Mclaudt|Mclaudt]] ([[User talk:Mclaudt|talk]]) 06:02, 25 March 2013 (UTC)


'''Animated sketch for line integral:''' Hey Lucas, an animation similar to your line integral sketch animation is exactly what we want to do. Nothing like a 3D rendering but an animated sketch, preferably with code-precision. Specifically, what software did you use for making that animation? Thanks!
== Incorrect normalization in [[:Image:Synthesis square.gif]] ==


== Math GIFs and Mathematica ==
Hi, I noticed that you were the one who created this animation. Overall, it's a great illustration, but there is clearly an error in the normalization: the [[Fourier series]] must converge to the square wave, except at the point of discontinuity. In the image, your Fourier series is clearly converging to a square wave with a slightly smaller amplitude.


Dear Mr. Barbosa,
It looks like you chose the normalization so that the first harmonic has the same amplitude as the square wave, when actually the first harmonic should be slightly larger.


I am a math teacher in San Diego, CA. I found one of your animated GIFs in an article published yesterday: http://www.businessinsider.com/7-gifs-trigonometry-sine-cosine-2013-5. I am interested in recreating some of your work using Mathematica (or having my students try) and publishing it on the Demonstrations web site (http://demonstrations.wolfram.com/). In particular I love your displays of line integrals and the simple, yet eye-opening illustration of what a radian is.
Can you please post a corrected plot? Thanks!


From what I understand and your copyright label, your work is available for use. If we were to publish work based on your designs, we will give you appropriate credit.
[[User:Stevenj|—Steven G. Johnson]] 19:06, 3 September 2006 (UTC)


Are you familiar with Mathematica and/or the Demonstrations web site? If not, I believe you would find it fascinating and would be an excellent contributor if you know Mathematica.
==Thanks==


Please let me know if you have any objection to me or my students using your work in this way. Thank you.
Thanks. Klepacki's linking all his interviews on his site made it pretty easy apart from organizing the entire thing. So far, it's the only computer / video game industry featured biography. --[[User:Zeality|Zeality]] 13:51, 22 September 2006 (UTC)


Sincerely,
== Your user logo ==
Abby Brown
abby.brown@sduhsd.net <span style="font-size: smaller;" class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/50.113.98.17|50.113.98.17]] ([[User talk:50.113.98.17|talk]]) 00:38, 15 May 2013 (UTC)</span><!-- Template:Unsigned IP --> <!--Autosigned by SineBot-->


==[[Wikipedia:Featured picture candidates/Radian]]==
Hi, Kieff!
<!-- comment to force linebreak -->
{| align=center border=0 cellpadding=4 cellspacing=4 style="border: 1px solid #CC9; background-color: #cfc"
|-
|[[File:Circle radians.gif|75px|center|]]
|{{center|1='''An image created by you has been promoted to [[Wikipedia:Featured picture|featured picture]] status'''}} Your image, '''[[:File:Circle radians.gif]]''', was nominated on [[Wikipedia:Featured picture candidates]], gained a consensus of support, and has been promoted. If you would like to nominate an image, please do so at [[Wikipedia:Featured picture candidates]]. Thank you for your contribution! [[User:Armbrust|Armbrust]] <sup>[[User talk:Armbrust|<span style="color:#E3A857;">The</span> <span style="color:#008000;">Homunculus</span>]]</sup> 16:53, 24 May 2013 (UTC)
|}


== animation of paradoxical decomposition ==
I really did make an effort to retain the representation of your user name you seemed to prefer, namely <span style="letter-spacing:1px"><span style="font-size:110%">Ҡ</span>''i''∊''<span style="vertical-align:-0.2em;font-size:110%">ff</span>''</span>]]<span style="font-size:120%">⌇</span>; but seemingly this was not appreciated (since you changed it). I'm fairly new to Wikipedia (though not to mathematics), whence I do not know quite what is ''comme il faut''. Should I in general try to copy the 'user logo's, or should I tend to use simpler and easier to read forms? An advice would be appreciated!
[[User:JoergenB|JoergenB]] 19:18, 23 September 2006 (UTC)


Can I ask your help in creating animation of paradoxical decomposition of the Kelly graph of the free group F_2? I just sow all the beautiful math animation on your page.
== sines ==


I'be created 6 pictures, see [http://he.wikipedia.org/wiki/%D7%9E%D7%A9%D7%AA%D7%9E%D7%A9:Aizenr/%D7%A4%D7%95%D7%A8%D7%98%D7%9C:%D7%9E%D7%AA%D7%9E%D7%98%D7%99%D7%A7%D7%94#animation].
I think your questions about other ways of [[Wikipedia:Reference_desk/Mathematics#Iterated_sine_function|generating waveforms with iterated sines]] interesting. I found an iterated [[Frequency modulation synthesis|FM]] waveform that is somewhat like a saw wave (but not as sharp), that you might want to look at.


Idealy, the movement of the pieces should be continues, so much more frames should be added. also, in the pass from 3 to 4, one need not only to enlarge the two pieces, but also to add details: the next level of the fractal.
:<math>F_0(x) = \sin {x}</math>
:<math>F_{i+1}(x) = \sin {(x+F_i(x))}</math>


Thank you very much,
But also this can be smoothly varied with a sine quite easily by attenuating the offset:


[[User:Aizenr|Rami]] ([[User talk:Aizenr|talk]]) 03:16, 30 May 2013 (UTC)
:<math>F_0 (x) = \sin {x}</math>
: Sombod offer to help me, so for now, pleas egnor my request
:<math>F_{i+1} (x) = \sin {(x+cF_i(x))}</math>
:[[User:Aizenr|Rami]] ([[User talk:Aizenr|talk]]) 03:32, 31 May 2013 (UTC)


== Tri-star wheel ==
Which becomes a sine wave as ''c'' approaches zero, and becomes interestingly chaotic as ''c'' becomes greater than 1.


[[Image:Tri-star.gif|thumb|300px|A Tri-Star wheel assembly rotating through a hole]]
I'm thinking I could actually find an FM solution for a real saw wave (or an arbitrary wave), but I'll need some time to figure it out.


If you ever run out of ideas to make cool animations of, consider doing one of the [[Tri-star (wheel arrangement)]]. I don't know how to make complicated animations. [[user:dllu|dllu]]&nbsp;[[User_talk:dllu|(t]],[[Special:Contributions/Dllu|c)]] 22:16, 1 June 2013 (UTC)
:I'm not LucasVB but I can make an animation of this using [[Algodoo]]. I'll get back to you in a few days. ~[[User:Conundrumer|Conundrumer]] ([[User talk:Conundrumer|talk]]) 04:32, 7 July 2013 (UTC)


== Villarceau graphics ==
I also notice that you were interested in [[Wikipedia:Reference_desk_archive/Science/December_2005#Synthesis_of_a_sine_wave_from_square_waves|making a sin wave from square waves]], which is an interesting idea. Ultimately, I believe it is impossible to do so in the manner you were attempting, but you asked then about the Fourier series, and whether it could work with things other than sine functions. Someone there mentioned that any "orthogonal basis" could be used, which isn't completely true. Harmonic square waves are orthogonal, but they're not a "complete orthogonal system" (in the Lebesgue sense). Basically, you need to be able to approximate any given continuous segment with your function, but with square waves this is impossible. You can approximate any given point, but in order to approximate a curve, you would need to introduce another square wave that puts a discontinuity in the middle of that approximated curve, and furthermore, any new wave you add that could better accomodate that curve adds new discontinuities. Anything that you can use for a fourier transform, on the other hand, can do so without the discontinuities. There are other ones than sin and cos; I've heard of a Fourier-Bessel series, and a Fourier-Legendre series, but I don't know offhand what they are used for. (Another way of looking at it is that sine and cosine have the relationship that any phase offest of a sine is equivalent to the sum of an appropriate sine and cosine. You can't do this with a square wave; there is no way to change the phase using just a square and a "cosquare".)


Hello.
You could, however, make a sine wave out of an infinite number of square waves of the same period with variable phase and amplitude (or any function that repeates its first half in the second half as a negative), but this isn't any kind of Fourier series. (By combining a square wave with phase 0.1, with a negative square wave with phase 0.2, you get a pulse from 0.1 to 0.2, and its negative reflection in the second half of the cycle, with enough pulses in a fine enough interval, you can make any function with that same kind of symmetry).
:
I was looking at your illustrations in [[Villarceau circles]]. I'm wondering if there's a quick way to adapt them to another purpose: I need some still shots from maybe two or three instants in the process, and they might have to look good in black-and-white. Can things like that be quickly pulled out of what's there? [[User:Michael Hardy|Michael Hardy]] ([[User talk:Michael Hardy|talk]]) 00:13, 14 August 2013 (UTC)


::Depends of what you're trying to do. Can you be more specific? The source code is available, and while a bit messy, it's pretty straightforward. The textures are easy to create in gray scale. I'm not sure if I'll have time to do it for you, but I can offer guidance. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 02:01, 14 August 2013 (UTC)
I thought I'd offer a slightly different approximation to the sine using squares than yours. In this case I am still using the odd harmonics, but in this case,


: A couple of black-and-white pictures that, along with suitable brief explanation, make the content of the theorem clear to an intelligent person who's never heard of it, would be enough. [[User:Michael Hardy|Michael Hardy]] ([[User talk:Michael Hardy|talk]]) 06:17, 14 August 2013 (UTC)
:<math>\sin{x} \approx \frac{\sqrt{2}}{2} \sum_{n=1}^{\infty}{\frac{C_n S((2n-1)x)}{2n-1} }</math>
:Where ''S'' is the square wave function, and ''C<sub>n<sub>'' is ''+1'' or ''-1'' depending on whether:
:<math>\sum_{m=1}^{n-1}{\frac{C_m}{(2m-1)}} < \frac{1}{(2n-1)}</math>


....I've never used any sort of ray-tracing software, but I copied your code into a file called Villarceau.pov and at the unix prompt, typed this:
:<math>C = +,-,-,-,-,-,-,+,-,-,+,-,+,-,+,-...</math>
:: povray Villarceau.pov
I got an error message saying there was no file called checker2.png&nbsp;. And there is that file name on line&nbsp;62. That's where I am so far with this. [[User:Michael Hardy|Michael Hardy]] ([[User talk:Michael Hardy|talk]]) 18:09, 14 August 2013 (UTC)


::: Yeah, you need to create two textures. The comments in the source mention them:
In this way, I am trying to keep the total sum around the fixed zero points somewhere near zero (so essentially, I am trying to approximate the sine wave by using the usual 1/n odd harmonics, but also trying to keep the two areas around 0 and pi well behaved. It ends up looking like this:
::::// 1024x512 checkered image, with 64x64 cells.
:::Basically, make two 1024x512 images with 64x64 checkered squares. checker2.png is the green texture on the inside, and checker.png is the blue texture on the outside. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 22:58, 14 August 2013 (UTC)
::::It could take a while since I'm not familiar with the software. And I'll probably need to use black-and-white. How do I get a still picture from one point in the process? [[User:Michael Hardy|Michael Hardy]] ([[User talk:Michael Hardy|talk]]) 05:48, 15 August 2013 (UTC)


== Dirac Delta Function animation request ==
[[Image:Squaring the sine.png]]


I absolutely love love these animations! They have completely changed the way I view math - and I mean completely! As I am old and my brain doesn't work all that well any more, could you do a simple Dirac delta function animation that matches the confusing symbology of the equation. I have a hard time wrapping my head around that one.
The bad areas around pi/2 and 3pi/2 don't really grow much more than that... I'm not sure if they'd tend to infinity, but I don't think so. At least, they get really, really insignificant after a while. If the ''C'' series is unreadable, think of it as a recurrance relationship:


Cheers! <small><span class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Agenttex11|Agenttex11]] ([[User talk:Agenttex11|talk]] • [[Special:Contributions/Agenttex11|contribs]]) 14:07, 18 August 2013 (UTC)</span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->
:<math>C_1 = 1</math>
:<math>{sum}_1 = \frac{1}{1}</math>
:<math>{sum}_n = {sum}_{n-1} + C_n \frac{1}{2n-1}</math>
:<math>C_n = \begin{cases}1 & ( \frac{1}{2n-1} < sum_{n-1} ) \\
-1 & ( \frac{1}{2n-1} > sum_{n-1} ) \end{cases}</math>


::That's a great suggestion! A few people in my diff. eq. class also had trouble understanding it. I think I have just the right idea, too. I'm adding it to the top of my to do list! Thanks! &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 14:55, 18 August 2013 (UTC)
So, if ''sum'' keeps track of the amplitudes used so far, ''C'' determines whether the next amplitude should be added or subtracted to keep the sum closer to zero. - [[User:Rainwarrior|Rainwarrior]] 19:46, 26 September 2006 (UTC)


== Fourier Transformation Animated GIF ==
Also, if you're interested in smoothing out the Gibbs phenomenon, do you know about the [[Sigma approximation|Lanczos filter]]? - [[User:Rainwarrior|Rainwarrior]] 20:07, 26 September 2006 (UTC)
That GIF absolutely did the trick ! Thank you! I were on the quest to understand what it means if a memory has 333MHz bandwidth, can transport 5.3G/s data with respect to what I would see on an (really good) Oscilloskop. I already start to wonder how a bus 1-and-0-Data transfer to time axis to frequency animation would look like ;)


[[Special:Contributions/88.64.10.115|88.64.10.115]] ([[User talk:88.64.10.115|talk]]) 08:56, 27 September 2013 (UTC)
== Villarceau circles ==


I would also like to applaud this graphic. It is amazing and helped me understand the relationship between the time domain and frequency domain representations of the data.
Your animation for [[Villarceau circles]] is so striking, that I thought it would be really neat to nominiate it for consideration at [[Wikipedia:Featured picture candidates/Villarceau circles|FPC]]! :-) --[[User:HappyCamper|HappyCamper]] 04:01, 2 October 2006 (UTC)


– [[User:Toltus_arran|Toltus]] ([[User talk:Toltus_arran|talk]]) 23:01, 11 November 2023 (UTC)
:Yup, I saw the new one but didn't think to voice an opinion. Is [http://en.wikipedia.org/enwiki/w/index.php?title=Wikipedia%3AFeatured_picture_candidates%2FVillarceau_circles&diff=79252979&oldid=79241702 this] good? :-) Anyway, I have been busy contacting all the people who voted on the previous image. It's nice to see them trickling back for support. --[[User:HappyCamper|HappyCamper]] 14:40, 3 October 2006 (UTC)
:: Thanks for posting the POV source, it is always nice to have incase someone wants a larger version or for instructional purposes for people like me. -[[User:Ravedave|Ravedave]] <small><sup>([[User:Ravedave/babyname|help name my baby]])</sup></small> 03:06, 4 October 2006 (UTC)


== [[Wikipedia:Templates for discussion|Nomination for deletion]] of [[Template:IMDb name]] ==
: One quibble is that I believe it might help if the inside surface of the torus is colored or textured so it is visibly distinct from the outside surface. --[[User:KSmrq|KSmrq]]<sup>[[User talk:KSmrq|T]]</sup> 08:18, 8 October 2006 (UTC)
[[File:Ambox warning pn.svg|30px|link=]][[Template:IMDb name]] has been nominated for deletion. You are invited to comment on the discussion at [[Wikipedia:Templates for discussion#Template:IMDb name|the template's entry on the Templates for discussion page]].<!--Template:Tfdnotice--> '''[[User:STATicVerseatide|<span style="color:#BA181F;">STATic</span>]] [[User talk:STATicVerseatide|<span style="vertical-align:super; color:#BA181F; font-size:smaller;">message me!</span>]]''' 16:26, 5 October 2013 (UTC)


== Nuclear Pasta Request ==
:: What do you mean? Isn't green inside and blue outside good enough? :S They look very distinct to me. Also, I DID experiment with a different texture (hexagons, stripes and plain colors), but it looked pretty boring or ambiguous, so I used checkered pattern inside too. ☢ [[User:Kieff|<span style="letter-spacing:1px"><span style="font-size:110%">Ҡ</span>''i''∊''<span style="vertical-align:-0.2em;font-size:110%">ff</span>''</span>]]<span style="font-size:120%">⌇</span>[[User_talk:Kieff|<span style="font-size:110%">↯</span>]] 08:53, 8 October 2006 (UTC)


Hi Lucasvb,
::: (You can reply here; I'm watching.) Maybe it's a monitor/color-management thing, but I see little difference. In fact, I did not realize that different colors were used until you said so! Still, I supported its nomination as a [[Wikipedia:Featured picture candidates/Villarceau circles|FPC]], where you can see the nice things I said. --[[User:KSmrq|KSmrq]]<sup>[[User talk:KSmrq|T]]</sup> 00:16, 9 October 2006 (UTC)


I'm a physicist who is currently developing the [[nuclear pasta]] article and one of the reddit askscience mods recommend you as a potential artist.
:: Very nice and striking indeed ! One question/request: would it be possible to slow down the section action ? [[User:LouisBB|LouisBB]] 19:38, 8 January 2007 (UTC)


I think the article would be greatly improved by having an "artists rendition" of the phenomena due it's geometric nature. It's an emerging, but still relatively obscure nuclear physics topic, and as such there aren't any images in the public domain. There are plenty of visualizations and animations present in the literature, but it's sadly proprietary to universities and journals (so I don't think Wikipedia would allow them), and they are also unfortunately fairly technical, lacking the sort of pedagogical format of something like a textbook illustration.
::: Sure. A few frames during the cut might make things even clearer! I'll get to it as soon as I can. &mdash; [[User:Kieff|Kieff]] 20:44, 8 January 2007 (UTC)


One of the pages the article cites includes a snapshot of a nuclear pasta simulation which is similar to what I have in mind.[http://pti.iu.edu/research/scholarly-highlights/articles/nuclear-pasta.php Link]
== image requests ==


The basic idea for the illustration is this: I'd like the article to be able to show a cross section of a neutron star crust, showing the phases and transitions between the spherical phase, rod phase, slab phase, and the voids in the matter at the bottom.
I vaguely remember you asking for suggestions for mathematical images to do a while back, so here are a couple of possibilities:
# [[Lakes of Wada]] could do with a picture (of the lakes of Wada).
#[[Wilkinson's polynomial]] could do with an animation of how the roots move in the complex plane as the coefficient of x^19 is changed.
[[User:R.e.b.|R.e.b.]] 05:24, 7 October 2006 (UTC)


I don't imagine a great deal of complexity being involved in the project- even a sketch would suffice. At most, it would be a static 3D rendering. If you have time and if the project I described interests you, I'll happily share more details and some of the inspiration images I've collected from the literature, as well as my own conceptual sketches.
I found a crude picture of the lakes of Wada in J. G. Hocking, G. S. Young, ''Topology'' ISBN 0486656764 on page 144, but it's probably not that much use to you. An animation of the lakes growing day by day would be even better than a picture, but this may not be worth the effort, as it's a rather obscure topic. Some of the external links already have pictures of infinite spherical reflections, so a picture of this is not needed. [[User:R.e.b.|R.e.b.]] 21:07, 9 October 2006 (UTC)


Thank you for taking the time to read my request, have a nice day.
I tried to draw a crude image of the lakes for you, but got carried away and ended up with something good enough to add to the [[Lakes of Wada]] article. Though it could still be animated if you are short of things to do.... [[User:R.e.b.|R.e.b.]] 16:12, 11 October 2006 (UTC)
[[User:Sudoiusudo|Sudoiusudo]] ([[User talk:Sudoiusudo|talk]]) 22:07, 6 October 2013 (UTC)


::It looks interesting, but I honestly have no idea what the illustration would be like, really. The link you gave me didn't help me much. If you could provide me with a rough hand-drawn sketch to get the genera idea, we could discuss it further. Thanks! &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 22:45, 6 October 2013 (UTC)
== Gimbal lock figure ==


::: This is my hand drawn sketch [http://i.imgur.com/UhR2w47.jpg Link]. I'm not the best artist so I'll have to direct you to other images, such as the ones [http://nuclei.mps.ohio-state.edu/content/highlights/pasta_1page_final.pdf here], which show the respective phases and how they morph into one another. The middle image in the bottom row in that PDF gives a better idea of what I was trying to show at the bottom of my sketch with the 'swiss cheese' voids. Do you think an image like my sketch is within the realm of possibility? Thanks [[User:Sudoiusudo|Sudoiusudo]] ([[User talk:Sudoiusudo|talk]]) 23:46, 10 October 2013 (UTC)
A single gimbal mount can be a semicircle, rather than a full circle. This may simplify the figure and make the essential features easier to notice.


==POTD notification==
The essence of physical gimbal lock is that the inner and outer axes become aligned, so that the body is free to rotate around two independent axes, but no longer around three. The essence of mathematical gimbal lock is a topological problem, discussed in [http://groups.google.com/group/comp.graphics.algorithms/browse_frm/thread/1492eb1c5df691ec/ this thread] from <tt>news:comp.graphics.algorithms</tt>. I assume you wish to illustrate the physical version.
[[File:Line integral of scalar field.gif|thumb|100px|right|[[Wikipedia:Picture of the day/November 2013#November 12 - Tuesday|POTD]]]]


Hi Lucas,
An inability to rotate in a certain way is a tactile phenomenon, not a visual one. A static illustration could simply show the aligned situation that corresponds to lock. An animation might show the effect of wiggling each axis in turn in a configuration away from lock, and then contrast that with a locked configuration.


Just to let you know that the Featured Picture [[:File:Line integral of scalar field.gif]] is due to make an appearance as [[Wikipedia:Picture of the day|Picture of the Day]] on November 12, 2013. If you get a chance, you can check and improve the caption at [[Template:POTD/2013-11-12]]. Thank you for all of your contributions!&nbsp;—&nbsp;[[User:Crisco 1492|Crisco 1492]] ([[User talk:Crisco 1492|talk]]) 21:48, 23 October 2013 (UTC)
However, if you want to ''try'' the tactile idea, you might somehow depict torque magnitudes. --[[User:KSmrq|KSmrq]]<sup>[[User talk:KSmrq|T]]</sup> 08:05, 8 October 2006 (UTC)
{{-}}


==Source Availability==
== Could you update the "Garden of eden" (Conway's Game of Life) picture?==
Hi Lucas,


I've recently discovered that you're behind many of my favorite images and animations on Wikipedia. So first off let me say thanks for your awesome work!
Howdy! I noticed that this picture: [[Image:Garden_of_Eden_2.png]] is out of date now... somebody has found a smaller pattern. I hope you know what I'm talking about... Here is a link to the page: http://pentadecathlon.com/lifenews/2006/03/smaller_garden_of_eden_pattern.html
I would do it myself, but I have no idea how.[[User:CountOlaf148|Count Olaf]] 21:49, 14 October 2006 (UTC)


I'm doing a brief lecture on topics related to Morse theory next week and am interested in creating some images for it. In part due to being fed up with some of Mathematica's limitations and in part being inspired by your work here, I've decided to finally try out POV-Ray, and am so far definitely enjoying myself! (The syntax is surprisingly intuitive!)
== Congrats! ==


My plan is to at least have images for the standard torus example, and I've figured out how to get the basic shapes (cap, half-torus, etc.) without much effort. I also have ideas on how to do this (using intersection and difference), but I'd be really curious to see how someone as seasoned as yourself would go about it (among other things).
{{award|image= Barnstar-atom3.png|text= I hereby award [[User:Kieff|Kieff]] the Barnstar of Science and Mathmatics for his great contributions (including amazing .gifs) to Math articles! '''''[[User:Nauticashades|Nautica]]''<font color="black">[[User:Nauticashades|Shades]]</font>'''<sup>([[User Talk:Nauticashades|talk]])</sup> 12:03, 8 October 2006 (UTC)}}


This leads me to my question: is the source for the tori available anywhere online? I got the impression from your FAQ that it might be and so I figured I'd check. Even if it's extremely messy, I'd love to take a look to compare.
== Featured picture promotion! ==

<!-- comment to force linebreak -->
Either way, thanks again for all your hard work! —[[User:Mathemajor|mathemajor]] ([[User talk:Mathemajor|talk]]) 21:52, 30 November 2013 (UTC)
{| align=center border=0 cellpadding=4 cellspacing=4 style="border: 1px solid #CC9; background-color: #cfc"

:I'm sorry, but I don't have the source code for that image anymore. I never bothered uploading it to Wikipedia because the image is very simple. All I did was using a texture to make the horizontal stripes, and added some very thin torus for the black lines connecting the sides. It shouldn't be too hard to reproduce the image. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 23:06, 30 November 2013 (UTC)

::No problem at all. I'm still getting used to POV-Ray but figured out how to make what I needed after my initial comment. Thanks for getting back to me! —[[User:Mathemajor|mathemajor]] ([[User talk:Mathemajor|talk]]) 03:07, 4 December 2013 (UTC)

== Some baklava for you! ==

{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
|style="vertical-align: middle; padding: 5px;" | [[File:Baklava - Turkish special, 80-ply.JPEG|135px]]
|style="vertical-align: middle; padding: 3px;" | Thank you for your work! [[User:Llluomengran|Llluomengran]] ([[User talk:Llluomengran|talk]]) 02:05, 18 December 2013 (UTC)
|}

== Notification of automated file description generation ==
Your upload of [[:File:Anthill inside.png]] or contribution to its description is noted, and thanks (even if belatedly) for your contribution. In order to help make better use of the media, an attempt has been made by an automated process to identify and add certain information to the media's description page.

This notification is placed on your talk page because a bot has identified you either as the uploader of the file, or as a contributor to its metadata. It would be appreciated if you could carefully review the information the bot added. To opt out of these notifications, please follow the instructions [[User:Theo's Little Bot/opt-out|here]]. Thanks!<!--Template:Un-botfill-null--> ''Message delivered by [[User:Theo's Little Bot|Theo's Little Bot]] ([[User:Theo's Little Bot/opt-out|opt-out]])'' 12:00, 29 December 2013 (UTC)

*Another one of your uploads, [[:File:Asteroids ico.png]], has also had some information automatically added. If you get a moment, please review the bot's contributions there as well. Thanks!<!--Template:Un-botfill--> ''Message delivered by [[User:Theo's Little Bot|Theo's Little Bot]] ([[User:Theo's Little Bot/opt-out|opt-out]])'' 12:24, 8 January 2014 (UTC)

== Piano Spiral Videos. Is there an app for that. ==

Just watched ALL of the Piano Spiral videos. They are amazing. I was wondering what it would take to create an app to display the spiral in real time as someone played a keyboard. You could use it in a math, physics, or music class. (I teach math.)

Anyway, I love your work. I've seen some of the animations before but never knew the source.

Damon

PS You should patent the idea! <small><span class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Wildmath|Wildmath]] ([[User talk:Wildmath|talk]] • [[Special:Contributions/Wildmath|contribs]]) 18:05, 20 January 2014 (UTC)</span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->

== A cookie for you! ==

{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
|style="vertical-align: middle; padding: 5px;" | [[File:Choco_chip_cookie.png|120px]]
|style="vertical-align: middle; padding: 3px;" | You are awesome! [[User:Алекснадр Мехоношин|Алекснадр Мехоношин]] ([[User talk:Алекснадр Мехоношин|talk]]) 21:45, 21 January 2014 (UTC)
|}

== Hi Lucas: Ola Beleza Pura! ==

Is there any hope to learn the level of Math you have shown in these pages at an age above 50?
Responda honestamente em Portugues, para grunchofgiantsatyandexpontocom

Grunchofgiants e um livro muito incrivel escrito por um dos visionarios mais autenticos que conheci na minha vida. Como voce ele trabalhou para a humanidade e o seu nome: Buckminster Fuller!
Gostaria de poder aprender a matematica atras das animacoes que voce fes.
Obrigado irmao, na luz e na paz,MP

== An RfC that you ''may'' be interested in... ==

As one of the previous contributors to {{Tl|Infobox film}} or as one of the commenters on it's talk page, I would like to inform you that there has been a [[Wikipedia:Requests for comments|RfC]] started on the talk page as to [[Template talk:Infobox film#RfC:Should an "Official website" parameter be enabled in the Infobox film template?|implementation of previously deprecated parameters]]. Your comments and thoughts on the matter would be welcomed. Happy editing!
: <small>This message was sent by [[User:MediaWiki message delivery|MediaWiki message delivery]] ([[User talk:MediaWiki message delivery|talk]]) on behalf of <span class="nowrap">&#123;&#123;U&#124;[[User:Technical 13|Technical 13]]&#125;&#125;</span> <sup>([[User talk:Technical 13|t]] • [[Special:EmailUser/Technical 13|e]] • [[Special:Contribs/Technical 13|c]])</sup> 18:27, 8 March 2014 (UTC)</small>
<!-- Message sent by User:Technical 13@enwiki using the list at http://en.wikipedia.org/enwiki/w/index.php?title=Template:Infobox_film/list&oldid=598721132 -->

== Congratulations, your tau gif was used in a USA Today website article ==

[http://www.usatoday.com/story/news/nation-now/2014/03/14/pi-day-tau-math/6410959/ www.usatoday.com/story/news/nation-now/2014/03/14/pi-day-tau-math/6410959/]

:[http://www.youtube.com/watch?v=kmnogV9S7b8 You got some usage on Discovery's DNews too.] --[[User:Joseph Lindenberg|Joseph Lindenberg]] ([[User talk:Joseph Lindenberg|talk]]) 19:46, 14 March 2014 (UTC)
== Nomination of [[:Albino Blacksheep]] for deletion ==
<div class="floatleft" style="margin-bottom:0">[[File:Ambox warning orange.svg|48px|alt=|link=]]</div>A discussion is taking place as to whether the article '''[[:Albino Blacksheep]]''' is suitable for inclusion in Wikipedia according to [[Wikipedia:List of policies and guidelines|Wikipedia's policies and guidelines]] or whether it should be [[Wikipedia:Deletion policy|deleted]].

The article will be discussed at [[Wikipedia:Articles for deletion/Albino Blacksheep ]] until a consensus is reached, and anyone is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article.<!-- Template:afd-notice --> [[User:TheMesquito|TheMesquito]] ([[User talk:TheMesquito|talk]]) 09:00, 20 March 2014 (UTC)

== Excellent triangular wave as sum of sine waves animation ==

The pause when n=50 to give time to actually appreciate the final state (unlike many others which loop back to the start instantly) and the slow count for the first few iterations when changes were most obvious then accelerating as they were more subtle was really well handled. Thank you for getting it so very right. I see that the image has been updated since last I visited the page so thanks too for making a good illustration better. [[User:Waerloeg|Waerloeg]] ([[User talk:Waerloeg|talk]]) 14:03, 1 June 2014 (UTC)

== A barnstar for you! ==

{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
|rowspan="2" style="vertical-align: middle; padding: 5px;" | [[File:Original Barnstar Hires.png|100px]]
|style="font-size: x-large; padding: 3px 3px 0 3px; height: 1.5em;" | '''The Original Barnstar'''
|-
|-
|style="vertical-align: middle; padding: 3px;" | you're work is great! [[User:ConradKilroy|Conrad Kilroy]] ([[User talk:ConradKilroy|talk]]) 19:22, 27 August 2014 (UTC)
|[[Image:Villarceau circles.gif|75px|center|]]
|<center>'''An image created by you has been promoted to [[Wikipedia:Featured picture|featured picture]] status'''</center> Your image, '''[[:Image:Villarceau circles.gif]]''', was nominated on [[Wikipedia:Featured picture candidates]], gained a consensus of support, and has been promoted. If you would like to nominate an image, please do so at [[Wikipedia:Featured picture candidates]]. Thank you for your contribution! [[User:KFP|KFP]] <small>([[User talk:KFP|talk]] | [[Special:Contributions/KFP|contribs]])</small> 15:48, 9 October 2006 (UTC)
|}
|}


== A barnstar for you! ==
:This is to let you know the Featured Picture you uploaded and/or nominated [[:Image:Villarceau circles.gif]] is scheduled to be [[Wikipedia:Picture of the day|Picture of the day]] on [[Wikipedia:Picture of the day/January 8, 2007|January 8, 2007]], when it will be featured on the [[Main Page]]. Congratulations! <span style="font-family:Verdana;">'''[[User:Howcheng|<span style="color: #33C;">howch</span>]][[WP:EA|<span style="color:#0F0">''e''</span>]][[User:Howcheng|<span style="color:#33C">ng</span>]]''' <small>{[[User talk:Howcheng|chat]]}</small></span> 17:43, 8 December 2006 (UTC)


{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
== Pi-unrolled ==
|rowspan="2" style="vertical-align: middle; padding: 5px;" | [[File:Special Barnstar Hires.png|100px]]
|style="font-size: x-large; padding: 3px 3px 0 3px; height: 1.5em;" | '''The Special Barnstar'''
|-
|style="vertical-align: middle; padding: 3px;" | Your illustration that decomposes a signal into its component sine waves is the greatest explanation ever. The world needs more like you! [[User:Slashdottir|Slashdottir]] ([[User talk:Slashdottir|talk]]) 20:36, 29 August 2014 (UTC)
|}


== POTD notification ==
I created (and linked from [[WP:FPC|FPC]]) a [[Image talk:Pi-unrolled.gif/Gallery|gallery]] of all versions of this graphic. I hope you won't take it the wrong way when I say that it's really messy to have four or five versions of an animation all on one page. I don't want to kick you off but would you consider taking out not only your version but also all previous versions, leaving only [[:Image:Pi-unrolled-720.gif]]? The outcome of the nom seems certain and I'd rather not see it closed and archived with so much animation on the page. If you agree, I'll ask you to do the refactoring, please, to your taste. You're also welcome, as the creator, to edit the comment attached to your version in the gallery. Thank you. [[User:John Reid|John&nbsp;]][[User talk:John Reid|Reid]] 21:58, 14 October 2006 (UTC)


[[File:Circle radians.gif|thumb|100px|right|[[Wikipedia:Picture of the day/September 2014#September 23 - Mon|POTD]]]]
== Image:Pattonb.jpg ==
Hi Lucas,


Just to let you know, the Featured Picture [[:File:Circle radians.gif]] is due to make an appearance as [[Wikipedia:Picture of the day|Picture of the Day]] on September 23, 2014. If you get a chance, you can check and improve the caption at [[Template:POTD/2014-09-23]]. Thank you for all of your contributions!&nbsp;—&nbsp;[[User:Crisco 1492|Crisco 1492]] ([[User talk:Crisco 1492|talk]]) 00:40, 5 September 2014 (UTC)
hi, can you take a look at [[:Image:Pattonb.jpg]] and specify which tag it should be tagged with? It is a nice little improvement of an image and would make articles look better, but if there is no tag, then other users might remove it arbitrarily. I note that the previous user mentioned public domain. Can you throw some light on it since you've worked on the image, who has the copyrights now? [[User:Idleguy|Idleguy]] 07:12, 5 November 2006 (UTC)
{{-}}


== Stellar classification ==
== A barnstar for you! ==
I really liked the star catigory picture, is there any chance I can get the pov-ray source code for them? my email is [email removed] -- [[User:Blake6489|Blake6489]] 06:55, 26 November 2006 (UTC)


{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
:I'm sorry, but it won't be available for now. I'm using it in some big project and I need to finish it before I can release anything to the public. Thanks for the compliment! ☢ [[User:Kieff|<span style="letter-spacing:1px"><span style="font-size:110%">Ҡ</span>''i''∊''<span style="vertical-align:-0.2em;font-size:110%">ff</span>''</span>]]<span style="font-size:120%">⌇</span>[[User_talk:Kieff|<span style="font-size:110%">↯</span>]] 06:59, 26 November 2006 (UTC)
|rowspan="2" style="vertical-align: middle; padding: 5px;" | [[File:Graphic Designer Barnstar Hires.png|100px]]
* I just saw this picture. Would you mind if I nominate [[:Image:Morgan-Keenan_spectral_classification.png|it]] at [[Wikipedia:Featured picture candidates]]? --[[User:Dgies|Dgies]] 22:43, 11 December 2006 (UTC)
|style="font-size: x-large; padding: 3px 3px 0 3px; height: 1.5em;" | '''The Graphic Designer's Barnstar'''
|-
|style="vertical-align: middle; padding: 3px;" | Today's POTD [[:File:Circle radians.gif]] is a simple and hence the best picture I saw in a long time. Thanks for creating that. Loved it. Your whole gallery of artwork is amazing. Keep it up! §§[[User:Dharmadhyaksha|<span style="color:red;">Dharmadhyaksha</span>]]§§ {[[User talk:Dharmadhyaksha|T]]/[[Special:Contributions/Dharmadhyaksha|C]]} 05:10, 23 September 2014 (UTC)
|}


== A sincere thank you ==
==Graphics Lab==
I saw your name listed on [[Wikipedia:WikiProject_Illustration#Related_projects|Wikiproject Illustration]] or [[Wikipedia:Wikipedians/Graphic artists| the list of graphic artists]], and I thought I'd let you know that a '''[[Wikipedia:Graphic Lab|Graphics Lab]]''' has been created on EN. Based on the highly successful [[:fr:Wikipedia:Atelier graphique|French]] and [[:de:Wikipedia:Bilderwerkstatt|German]] graphics labs, it seeks to better organise and coordinate our graphic design and photo-editing efforts. Up until now, there has been no common space on EN where users could ask for maps, charts and other SVG files to be created. What's more, the [[Wikipedia:Graphic Lab|Graphics Lab]] has discussion boards, tips, tools and links; in sum, a good common workspace. Come help us out! The infrastucture is already in place, and now we need participants. :) --<font color="black">[[User:Zantastik|Zantastik]]</font> <font color="darkgreen" size="1">[[User talk:Zantastik|talk]]</font> 02:09, 12 December 2006 (UTC)


Hi Lucas,
== Your signature ==


As a student with no natural talent for maths, your animations and gifs have been extremely helpful to the point where they have given me those rare and enthralling lightbulb moments which make me love maths.
Just to let you know, I don't have some of the fancy fonts used in your signature, so everything you sign seems to start with a question mark, instead. This led to a misunderstanding on the Misc Ref Desk, where I thought you were unsure of your [[Sun Tsu]] answer, so added my own. If I'd known you were certain, I wouldn't have answered. Of course, fancy sigs also make edits messy, as those sigs often take up several lines of text. I can't tell you what you should or shouldn't put in your sig, but did want you to be aware of some of the issues, so you can "make an informed decision". Thanks, [[User:StuRat|StuRat]] 15:54, 18 December 2006 (UTC)


Thank you for all your hard work which has made mine and undoubtedly many more people's lives so much better.
== IMDb name template ==


Sincerely,
Hi -


Martin N.
I noticed you listed your talk page as a place to ask for help with the {{tl|imdb name}} template. I've made extensive revisions to the instructions; this is to ask two things:
* Would you please review the instructions I've revised at [[Template:Imdb name/doc]] for accuracy and clarity?, and
* Do you still want to be listed as a contact for people having problems with using the template?
I'll put your talk page on my watchlist; I'd prefer that you respond here to keep the dialogue in one place. Thanks.<font color="721227">&mdash;</font>[[User:Chidom|<font color="DC5300">'''Chidom'''</font>]]&nbsp;[[User talk:Chidom|<font color="721227"><sup>'''talk'''</sup></font>]]&nbsp; 19:31, 6 January 2007 (UTC)


[[Special:Contributions/118.138.13.59|118.138.13.59]] ([[User talk:118.138.13.59|talk]]) 23:05, 16 November 2014 (UTC)
== Brazilian Portuguese Hitchhiker's fan site? ==


== Thank you ==
Do you happen to have a working link? I saw the link on hhgttgonline.com, but I got a domain not found error, and not a working website. --[[User:JohnDBuell|JohnDBuell]] 18:42, 7 January 2007 (UTC)


Regarding Circle_radians.gif
:Well, first of all, I added the Brazilian Portuguese in that list because, as I understood, the paragraph was mentioning relevant websites from past and present.
:That being said, no, I don't have a link. Not ''officially'' (but check my [http://milliways.toxicdump.org historical page] of it). Milliways Brasil ''is'' dead. Since Milliways was the first and only DNA\HHGG website from Brazil and existed for a year with quite a few followers, I thought it qualified for the mention. I was the owner, by the way. When I was promoting the movie, the book and Douglas Adams around here, I even started a "[http://milliways.toxicdump.org/campanha.php Towel Campaign]" in which people would attent to theaters with their towels (it included 42 good, humorous reasons to do so.) Back then, I was having at least 36 different Brazilian blogs linking to the website, plus some [[Orkut]] links. I think it was notable enough around here (considering the minimal fanbase we had back then), and I had a few official contacts, like the Brazilian Portuguese official book translator and the Brazilian distribution manager at Buena Vista International - who actually sent me 5 shiny Brazilian posters before anyone else. Given all this, I thought it qualified for the list (but I may be biased, of course), so I mentioned the Brazilian Portuguese language fansite on the list, even if it doesn't exist anymore.
:Hope that clears everything up. In any case, I removed the mention since it looks like I misunderstood the paragraph anyway. &mdash; [[User:Kieff|Kieff]] 20:01, 7 January 2007 (UTC)
::Actually we could re-include that with a slight re-write. Wasn't there an Italian one for a while too? --[[User:JohnDBuell|JohnDBuell]] 21:38, 7 January 2007 (UTC)


I had real issues understanding the concept. But the animation solved it for me. I finaly understood the underlying basics - Thanks a lot! --[[Special:Contributions/87.162.46.170|87.162.46.170]] ([[User talk:87.162.46.170|talk]]) 12:53, 5 March 2015 (UTC)
== Koch Cube ==


== Another go? ==
Thanks for helping me with the "Koch cube" question. Having used the great marvel that is Google, I found [http://www.daviddarling.info/encyclopedia/K/Koch_snowflake.html]. It seems you were correct. --[[User:AMP'd|AMP&#39;d]] 04:35, 12 January 2007 (UTC)


Am trying it yet again: [[Wikipedia:Articles for deletion/Aquaria (band) (2nd nomination)]] <span style="font-family:Verdana;">[[User:KDS4444|<span style="color:midnightblue">'''KDS'''</span><span style="color:steelblue">'''4444'''</span>]][[User talk:KDS4444|<span style="color:limegreen"><sup>''Talk''</sup></span>]]</span> 20:47, 26 March 2015 (UTC)
== How to make animations ==


== Time and frequency domains of a function ==
Hi Kieff,


Hi, May I use your animation of time and frequency domain of a function in a presentation? I will not have access to internet during the talk. I tried to download the file but I only get the first image. I would like to use it to simply to explain a fourier transformation. Your visualization is excellent!
I saw some of your animations. So far I have made a number of 2D-animations, such as the ones in the [[rotational-vibrational coupling]] article. I also have a website of my own, [http://www.cleonis.nl/physics/phys256/comparison.php this article] contains some of my attempts at semi-3D animations.
Many thanks. [[Special:Contributions/70.90.25.149|70.90.25.149]] ([[User talk:70.90.25.149|talk]]) 14:16, 17 April 2015 (UTC)elizabeth ewhuntley@aol.com


::Hi! Thanks for the compliment! The animation is in the public domain (I always release them as such), so you are totally free to use it. It would be nice to give credit, of course! :)
I would love to create animations for the [[mass flow meter]] article, animations that match or surpass the quality of the animations on the website of a manufacturer of mass flow meters, for example the [http://www.emersonprocess.com/micromotion/tutor/28_flowoprinccurvtubevib.htm curved tube mass flow meter] animation.
::Here's the direct link for the full animation: https:/upwiki/wikipedia/commons/5/50/Fourier_transform_time_and_frequency_domains.gif
::There's also a [https://www.youtube.com/watch?v=r4c9ojz6hJg continuous Fourier transform animation], but that one is not as clear! &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 15:40, 17 April 2015 (UTC)


== A bowl of strawberries for you! ==
I'd like to ask you if you can assist me with getting started with POV-ray. --[[User:Cleonis|Cleonis]] | [[User talk:Cleonis|Talk]] 15:57, 14 January 2007 (UTC)


{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
:[...]
|style="vertical-align: middle; padding: 5px;" | [[File:Erdbeerteller01.jpg|120px]]
|style="vertical-align: middle; padding: 3px;" | your work is the best! I love your blue solids series [[User:Blacklemon67|Blacklemon67]] ([[User talk:Blacklemon67|talk]]) 06:59, 23 April 2015 (UTC)
|}


== gyroscope operation animation ==
:Nice to see you're interested in POV-Ray, it's quite a nice program, especially for those into mathematics and programming. :)
[[File:Gyroscope_operation.gif|right|gyro animation]]
Hi, I wanted to ask you how you made this animation because I'm having trouble doing the same thing. I guess you just parented each object from the disk to the gyroscope frame and then animated each piece. The problem in my case is that I want to control only the external circle and I want the rest of the animation to be solved by some constraints. Did you by any chance do it this way ? (I'm using blender, but I just need the main idea)[[User:Gamnamno|Gamnamno]] ([[User talk:Gamnamno|talk]]) 20:15, 23 October 2015 (UTC)


:Hello. I actually grouped from outside-in, and applied the inverse rotation to inner gimbals. That way no matter what I did, the final disk would remain in place. Not sure if that helps. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 20:35, 23 October 2015 (UTC)
:The thing is, POV-Ray is a lot more low-level than most people realize. You have to get your hands in a lot of math to make things move nicely and look nicely, which is exciting and challenging. But since we're talking mostly about diagrams and models here, most animations won't be too complex.


Thanks. I got some close results but still not exactly it. I started a forum page here :
:[...]
http://blenderartists.org/forum/showthread.php?384307-Rig-Constrain-a-3-axis-Gyroscope
I don't see anything in Blender such as inverse rotation as you say, but I think there's a way around it.


::Inverse rotation is just rotating around the same axes by a negative angle. Rotating everything by 30 degrees then by -30 degrees restores the original position. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 00:28, 24 October 2015 (UTC)
:Good luck, and don't hesitate to ask for further help! &mdash; [[User:Kieff|Kieff]] 05:12, 15 January 2007 (UTC)


I found a constrain in Blender that inverts the rotation from an object. But still can't find the solution ! So let me recap : I don't apply any constraint on the external part. Then the middle part is constrained by the external, and the center by the middle. But did you invert the rotation on all 3 axes or only the one given by the joints, or the 2 others ? Do I miss something ? Maybe once passed 180 or 360 degrees in Blender something happens. <small><span class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Gamnamno|Gamnamno]] ([[User talk:Gamnamno|talk]] • [[Special:Contributions/Gamnamno|contribs]]) 01:01, 24 October 2015 (UTC)</span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->
::Generally, I want control over what the program does rather than extensive automation. For example, I write my website in HTML. Using a WYSIWYG editor doesn't suit my way of thinking around problems. So the fact that in using POV-ray I must get my hands in the math will suit me, I think.


I updated the forum page. Can you take a look ? It's actually more Blender related than I thought but maybe you'll have an idea.<small><span class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Gamnamno|Gamnamno]] ([[User talk:Gamnamno|talk]] • [[Special:Contributions/Gamnamno|contribs]]) 02:43, 24 October 2015 (UTC)</span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->
::Thank you for the descriptions you put up on my Talk page. If I get stuck I will seek your help. --[[User:Cleonis|Cleonis]] | [[User talk:Cleonis|Talk]] 16:09, 15 January 2007 (UTC)


::I'm not sure what's happening. Let me see if I can find my old source code. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 03:50, 24 October 2015 (UTC)
== Thanks ==
:::Drats! It's not on my hard drive. I may have lost it! :(
:::But you should start simple. Try to make one gimbal work, before you do both. That's what I did. I remember getting some weird results like yours when I first started. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 03:58, 24 October 2015 (UTC)


Forum updated ! The problem is now solved. Thanks a lot man !<small><span class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Gamnamno|Gamnamno]] ([[User talk:Gamnamno|talk]] • [[Special:Contributions/Gamnamno|contribs]]) 01:59, 27 October 2015 (UTC)</span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->
Thanks for your Wikipedia tips after my blundering around the Tesla Coil article. I saw the "you have mail" thing and I figured it would hurt. What a nice surprise!!!


== Square/Hexagon sin graphs ==
[[User:72.72.37.51|72.72.37.51]] 23:39, 15 January 2007 (UTC)Packer

Hey, i was browsing through your tumblr and one animation that really interested me was the regular polygon sin graphs. I see that the circle one is x = A*sin(omega * t) and I am interested in knowing the equations of the other two. Can we chat about them in my email? [email removed]
[[User:LizmoGadget|LizmoGadget]] ([[User talk:LizmoGadget|talk]]) 23:20, 9 November 2015 (UTC)

== [[WP:ACE2015|ArbCom elections are now open!]] ==

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You appear to be eligible to vote in the current [[WP:ACE2015|Arbitration Committee election]]. The [[WP:ARBCOM|Arbitration Committee]] is the panel of editors responsible for conducting the Wikipedia [[WP:RFAR|arbitration process]]. It has the authority to enact binding solutions for disputes between editors, primarily related to serious behavioural issues that the community has been unable to resolve. This includes the ability to impose [[WP:BAN|site bans]], [[WP:TBAN|topic bans]], editing restrictions, and other measures needed to maintain our editing environment. The [[WP:ARBPOL|arbitration policy]] describes the Committee's roles and responsibilities in greater detail. If you wish to participate, you are welcome to [[WP:ACE2015/C|review the candidates' statements]] and submit your choices on [[Special:SecurePoll/vote/398|the voting page]]. For the Election committee, [[User:MediaWiki message delivery|MediaWiki message delivery]] ([[User talk:MediaWiki message delivery|talk]]) 22:12, 30 November 2015 (UTC)
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== Thank you for https://de.wikipedia.org/wiki/Radiant_(Einheit)#/media/File:Circle_radians.gif ==

Hi there,
this is the most simple way to explain rad. Thank you very much!
I will spread the Link to the corresponding Wikipedia-Entry.
Happy Christmas

Carsten Brauer
[[User:B20110|B20110]] ([[User talk:B20110|talk]]) 11:05, 18 December 2015 (UTC)

== What do you do for a living? ==

I looked at your profile but I couldn't find what exactly your job is -that is if you have one, I don't like to assume everyone has to have one, but that's probably just me-. You seem to have knowledge in many areas and I am curious about what does a man like you do for earning money. Sorry if I'm being too curious [[Special:Contributions/46.1.53.174|46.1.53.174]] ([[User talk:46.1.53.174|talk]]) 21:07, 9 January 2016 (UTC)

::I'm currently a physics student. I try to be frugal and survive off the occasional freelance coding gigs I get. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 18:12, 10 January 2016 (UTC)

== A barnstar for you! ==

{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
|rowspan="2" style="vertical-align: middle; padding: 5px;" | [[File:Graphic Designer Barnstar Hires.png|100px]]
|style="font-size: x-large; padding: 3px 3px 0 3px; height: 1.5em;" | '''The Graphic Designer's Barnstar'''
|-
|style="vertical-align: middle; padding: 3px;" | Great work! [[User:Nicoguaro|Nicoguaro]] ([[User talk:Nicoguaro|talk]]) 02:47, 10 February 2016 (UTC)
|}
== Speedy deletion nomination of Genecyst ==

Hello LucasVB,

I wanted to let you know that I just tagged [[Genecyst]] for deletion, because the article doesn't clearly say why the subject is important enough to be included in an encyclopedia.

If you feel that the article shouldn't be deleted and want more time to work on it, you can <span class="plainlinks">'''[http://en.wikipedia.org/enwiki/w/index.php?title={{urlencode:Talk:Genecyst}}&action=edit&section=new&preload=Template:Hangon_preload&preloadtitle=This+page+should+not+be+speedy+deleted+because...+ contest this deletion]'''</span>, but please don't remove the speedy deletion tag from the top.

You can leave a note on [[User_talk:Mr RD|my talk page]] if you have questions. '''<span style="text-shadow:#808080 0.2em 0.2em 0.2em">[[User:Mr RD|<span style="font-size:medium;"><span style="color:blue;font-family:Comic Sans MS">Mr <span style="color:green;">RD</span></span></span>]]</span>''' 16:00, 26 March 2016 (UTC)
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<div class="floatleft" style="margin-bottom:0">[[File:Ambox warning orange.svg|48px|alt=|link=]]</div>A discussion is taking place as to whether the article '''[[:Genecyst]]''' is suitable for inclusion in Wikipedia according to [[Wikipedia:List of policies and guidelines|Wikipedia's policies and guidelines]] or whether it should be [[Wikipedia:Deletion policy|deleted]].

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Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article.<!-- Template:afd-notice --> [[User:Adam9007|Adam9007]] ([[User talk:Adam9007|talk]]) 22:26, 26 March 2016 (UTC)
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<div class="floatleft" style="margin-bottom:0">[[File:Ambox warning orange.svg|48px|alt=|link=]]</div>A discussion is taking place as to whether the article '''[[:Gens Sound Record]]''' is suitable for inclusion in Wikipedia according to [[Wikipedia:List of policies and guidelines|Wikipedia's policies and guidelines]] or whether it should be [[Wikipedia:Deletion policy|deleted]].

The article will be discussed at [[Wikipedia:Articles for deletion/Gens Sound Record]] until a consensus is reached, and anyone is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article.<!-- Template:afd-notice --> <span style="background:#F0F0FF; padding:3px 9px 4px">[[User talk:Czar|<span style='font:bold small-caps 1.2em Avenir;color:#B048B5'>czar</span>]]</span> 04:34, 17 April 2016 (UTC)

== Congratulations! ==

Congratulations to your great gifs, they are amazing! And thank you very much for releasing them into the public domain. I see that some of them were produced with povray and you include the source code, which is super. May I ask what software you used for [[:File:Circle_radians.gif]] and do you also have source code available? Cheers, [[User:AxelBoldt|AxelBoldt]] ([[User talk:AxelBoldt|talk]]) 22:55, 15 May 2016 (UTC)

::Hello! Thank you for the comments. :)

::For that GIF, I used a custom drawing library, so the source code isn't available, I'm afraid. I can help you reproduce it somewhere if that helps. Cheers! &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 23:09, 15 May 2016 (UTC)

:::No, that's OK. I was looking around for software to produce similar animations (equations moving around etc.) and was just wondering what the experts use... Have you since come across any software package that makes these things easy? [[User:AxelBoldt|AxelBoldt]] ([[User talk:AxelBoldt|talk]]) 17:45, 16 May 2016 (UTC)

::::Not really. Closest thing I can recommend is using Processing. In the end, my philosophy is to just use a library to draw graphics. Demanding that it also works in terms of mathematics just seems like asking for too much. For instance, Mathematica can make pretty good images, but it's incredibly cumbersome to work with, and is full of bugs on 3D rendering of shapes. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 18:00, 16 May 2016 (UTC)

:::::I'll check out Processing, thanks! [[User:AxelBoldt|AxelBoldt]] ([[User talk:AxelBoldt|talk]]) 22:01, 16 May 2016 (UTC)

== File:Pangaea continents.svg ==

Which type of map projection is used for this image? Thanks! <span style="border:1px solid #f57900;padding:1px;">[[User:SharkD|<span style="color:#8f5902;padding-left:1px;">SharkD</span>]] [[User_talk:SharkD|<span style="color:#fff;background:#fcaf3e;">&nbsp;Talk&nbsp;</span>]]</span> 04:59, 15 November 2016 (UTC)

::I traced it from a non-public domain image I found ages ago. I'm afraid I can't find it again to really check. Sorry. This information really should be available. I'd have hoped that image would have been made obsolete by now. &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 23:38, 15 November 2016 (UTC)

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== A kitten for you! ==

[[File:Kitten in a helmet.jpg|left|150px]]
Thank You!

[[User:Hemantcompiler|Hemantcompiler]] ([[User talk:Hemantcompiler|talk]]) 17:48, 20 February 2017 (UTC)
<br style="clear: both;"/>
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== A barnstar for you! ==

{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
|rowspan="2" style="vertical-align: middle; padding: 5px;" | [[File:Barnstar of Diligence Hires.png|100px]]
|style="font-size: x-large; padding: 3px 3px 0 3px; height: 1.5em;" | '''The Barnstar of Diligence'''
|-
|style="vertical-align: middle; padding: 3px;" | Good work, keep it up. [[User:Iamaaditya|Iamaaditya]] ([[User talk:Iamaaditya|talk]]) 15:02, 30 April 2017 (UTC)
|}
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{| style="background-color: #fdffe7; border: 1px solid #fceb92;"
|rowspan="2" style="vertical-align: middle; padding: 5px;" | [[File:Original Barnstar Hires.png|100px]]
|style="font-size: x-large; padding: 3px 3px 0 3px; height: 1.5em;" | '''The Original Barnstar'''
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|}
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== Pangaea ==

Hi,

My name is Nicholas Harper. I am a new author and I recently wrote a book! I was writing you because it's a fantasy novel and I used your map (with fictitious places) as the land for my setting. I was wondering do you mind if I use it? If not I will make changes, but due to copyright issues that could occur in the future, I had to ask.Please respond back,

Nicholas Harper [[Special:Contributions/2601:CA:4400:61E0:395F:5B11:3A3C:E686|2601:CA:4400:61E0:395F:5B11:3A3C:E686]] ([[User talk:2601:CA:4400:61E0:395F:5B11:3A3C:E686|talk]])

::Hey Nicholas. Congrats on the book! It is my understanding that this license does not allow your alterations to be sold commercially ("share alike"). However, I would recommend you get a better illustration, as mine is pretty basic and you could probably draw a better one. :) &mdash; [[User:LucasVB|LucasVB]] | [[User_talk:LucasVB|Talk]] 20:15, 15 August 2021 (UTC)

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== A barnstar for you! ==

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Latest revision as of 10:23, 24 October 2024

Main | Talk | Junk | Gallery | Sandbox



Archive0 (2006-01-24)
Archive1 (2012-05-22)

Surprise, surprise

[edit]

Parabéns pela animação! Foi uma bela surpresa verificar (a posteriori) que estava a avaliar o trabalho de um conterrâneo! -- Alvesgaspar (talk) 18:23, 14 August 2012 (UTC)[reply]

Também achei excelente a animação. Bravo! FilipeS (talk) 14:37, 17 August 2012 (UTC)[reply]
An image created by you has been promoted to featured picture status
Your image, File:Line integral of scalar field.gif, was nominated on Wikipedia:Featured picture candidates, gained a consensus of support, and has been promoted. If you would like to nominate an image, please do so at Wikipedia:Featured picture candidates. Thank you for your contribution! Makeemlighter (talk) 17:23, 26 August 2012 (UTC)[reply]

Can you illustrate "covariant derivative"?

[edit]

I noticed that you have some really great animated illustrations here on Wikipedia. Recently there was a request on Talk:Covariant_derivative#Add_Images requesting some images, and I suggested the following:

I'm not a good graphic artist, but here is a suggestion for a picture. Draw a circle on a flat sheet of paper. Travel around the circle at a constant speed. The derivative of your velocity, your acceleration vector, always points radially inward. Roll this sheet of paper into a cylinder. Now the (Euclidean) derivative of your velocity has a component that sometimes points inward toward the axis of the cylinder depending on whether you're near a solstice or an equinox. This is the (Euclidean) Normal component. The Covariant derivative component is the component parallel to the cylinder's surface, and is the same as that before you rolled the sheet into a cylinder. Cloudswrest (talk) 19:37, 2 January 2013 (UTC)[reply]

Math markup errors in Eugenvalues and eigenvectors

[edit]

Hi,thanks for the note. I did check with preview and did not see THAT many errors. Will check again and fix as appropriate. --Jorge Stolfi (talk) 02:32, 4 February 2013 (UTC)[reply]

  • I checked again and I did not see ANY serious math markup errors; on the contrary the math displays much better on my browser (Chrome with "render math as SVG" option). What are the errors that you see? --Jorge Stolfi (talk) 02:37, 4 February 2013 (UTC)[reply]
  • Aha, I switched my Wikipedia preferences to "render as PNG", and now I see the errors you mention. Almost all of them are uses of "×" inside math, in place of \times. The MathJAX renderer understands some of those ISO-latin operator characters, but the Wikipedia server that creates the PNG images apparently doesn't. I will fix them. (By the way, consider using MathJAX with SVG instead of PNGs. It is the way forward it seems...) All the best, --Jorge Stolfi (talk) 02:51, 4 February 2013 (UTC)[reply]
  • I have fixed the errors with PNG option. Agree that <math>...</math> is too heavy with PNG. See talk page... --Jorge Stolfi (talk) 03:47, 4 February 2013 (UTC)[reply]

A barnstar for you!

[edit]
The Original Barnstar
thats some great work Ehypersonic (talk) 13:46, 8 February 2013 (UTC)[reply]

Gyro animation

[edit]
gyro animation
gyro animation

Hello, I've noticed, that the wheel precession directions in the gyro animation created by you are mixed up. They should be swapped to opposite, while keeping the current directions of wheel revolution and the external forces intact.

If you disagree, please take a bike wheel in your hands, start the rotation, apply a force in the same direction as on your animation, and you will see, that the real precession direction is in fact appears to be opposite to what it is on your animation. Atatevyan (talk) 07:47, 9 February 2013 (UTC)[reply]

Thanks for the comment. I'll give it a look as soon as I can. — Kieff | Talk 08:57, 9 February 2013 (UTC)[reply]

Squaring the circle

[edit]

Moving the discussion here because Tumblr is an awful medium to have conversations.

So the video is here. I got the ratios and magnitudes (and the idea) from Livio Zucca (he has some other cool math stuff), who was also an avid user of Algodoo (well, back in the days, it was called Phun). The output waveforms from each piston linkage were approximations of sine waves, the magnitudes of which I fudged a bit to make the resulting average as square as possible. I have a few more videos of contraptions made in Phun/Algodoo here (I'll eventually turn them into GIFs). I think you should try out Algodoo. Conundrumer (talk) 21:48, 18 February 2013 (UTC)[reply]

Oh, neat! So it's the a Fourier series for the radius based on angle. Pretty close to what I did with those polygons! Algodoo looks pretty cool, thanks for the suggestion.


"What interval would you recommend? Is there a peak activity time where I should aim for?"

I can't say I'm an expert at becoming Tumblr famous, but for now, you should try to maintain a steady stream of content so that people don't forget about you, ie try to publish at least one thing everyday. When you make a lot of content at once, you can put it on queue so the content gets published steadily, instead of all at once. It's okay if you take a break and don't post anything for a period of time, but generally, Tumblr users like to see a variety of content, and seeing a lot of the same kind of posts consecutively wouldn't be as engaging as when the posts are seen individually (well unless they are directly referencing each other, but I guess you can just make a link). If you stick around Tumblr, you can get the feel of the attention span of the typical Tumblr user (not very long!). I hope this helps you gain more presence in Tumblr! ~Conundrumer (talk) 01:58, 20 February 2013 (UTC)[reply]

Thanks. I still need to get a feel for tumblr. I barely follow anyone because the rhythm of things seems so incredibly intense and fast. I'm the sort of guy who likes to see everything, so that's a bit of a problem. I'll try to space things out more. Thanks! — Kieff | Talk 02:06, 20 February 2013 (UTC)[reply]

What software could you recommend for animated 3D math sketches?

[edit]

Sir, you are awesome, thanks a lot for your clean and deeply precise animation! Could you recommend some tools for creating animated math sketches like yours? I realize that it depends.

  • 3dsMax, Maya, Blender seem to be overhead,
  • CLUCalc is nice, but raster,
  • to write custom scripts for SVG/pgf/TikZ is to reinvent a wheel.

Mclaudt (talk) 22:49, 24 March 2013 (UTC)[reply]

The only one I can recommend is POV-Ray. It's great for technical drawings because you specify everything in terms of code, so it is very precise. The language for describing objects is pretty straightforward, but coding logic on it is a little bit a of a struggle.
But it has no visual feedback until you render things. This may be a problem if you don't have a good spatial intuition. Here's my latest POV-Ray creation, with source code included if you want to try it out. — LucasVB | Talk 22:58, 24 March 2013 (UTC)[reply]
Thanks. It's sad that SDL has low abstraction possibilities. I think Mathematica has fantastically flexible and expressive syntax. And some intermediate tool could help develop complex math visualisation. Mclaudt (talk) 06:02, 25 March 2013 (UTC)[reply]

Animated sketch for line integral: Hey Lucas, an animation similar to your line integral sketch animation is exactly what we want to do. Nothing like a 3D rendering but an animated sketch, preferably with code-precision. Specifically, what software did you use for making that animation? Thanks!

Math GIFs and Mathematica

[edit]

Dear Mr. Barbosa,

I am a math teacher in San Diego, CA. I found one of your animated GIFs in an article published yesterday: http://www.businessinsider.com/7-gifs-trigonometry-sine-cosine-2013-5. I am interested in recreating some of your work using Mathematica (or having my students try) and publishing it on the Demonstrations web site (http://demonstrations.wolfram.com/). In particular I love your displays of line integrals and the simple, yet eye-opening illustration of what a radian is.

From what I understand and your copyright label, your work is available for use. If we were to publish work based on your designs, we will give you appropriate credit.

Are you familiar with Mathematica and/or the Demonstrations web site? If not, I believe you would find it fascinating and would be an excellent contributor if you know Mathematica.

Please let me know if you have any objection to me or my students using your work in this way. Thank you.

Sincerely, Abby Brown abby.brown@sduhsd.net — Preceding unsigned comment added by 50.113.98.17 (talk) 00:38, 15 May 2013 (UTC)[reply]

An image created by you has been promoted to featured picture status
Your image, File:Circle radians.gif, was nominated on Wikipedia:Featured picture candidates, gained a consensus of support, and has been promoted. If you would like to nominate an image, please do so at Wikipedia:Featured picture candidates. Thank you for your contribution! Armbrust The Homunculus 16:53, 24 May 2013 (UTC)[reply]

animation of paradoxical decomposition

[edit]

Can I ask your help in creating animation of paradoxical decomposition of the Kelly graph of the free group F_2? I just sow all the beautiful math animation on your page.

I'be created 6 pictures, see [1].

Idealy, the movement of the pieces should be continues, so much more frames should be added. also, in the pass from 3 to 4, one need not only to enlarge the two pieces, but also to add details: the next level of the fractal.

Thank you very much,

Rami (talk) 03:16, 30 May 2013 (UTC)[reply]

Sombod offer to help me, so for now, pleas egnor my request
Rami (talk) 03:32, 31 May 2013 (UTC)[reply]

Tri-star wheel

[edit]
A Tri-Star wheel assembly rotating through a hole

If you ever run out of ideas to make cool animations of, consider doing one of the Tri-star (wheel arrangement). I don't know how to make complicated animations. dllu (t,c) 22:16, 1 June 2013 (UTC)[reply]

I'm not LucasVB but I can make an animation of this using Algodoo. I'll get back to you in a few days. ~Conundrumer (talk) 04:32, 7 July 2013 (UTC)[reply]

Villarceau graphics

[edit]

Hello.

I was looking at your illustrations in Villarceau circles. I'm wondering if there's a quick way to adapt them to another purpose: I need some still shots from maybe two or three instants in the process, and they might have to look good in black-and-white. Can things like that be quickly pulled out of what's there? Michael Hardy (talk) 00:13, 14 August 2013 (UTC)[reply]

Depends of what you're trying to do. Can you be more specific? The source code is available, and while a bit messy, it's pretty straightforward. The textures are easy to create in gray scale. I'm not sure if I'll have time to do it for you, but I can offer guidance. — LucasVB | Talk 02:01, 14 August 2013 (UTC)[reply]
A couple of black-and-white pictures that, along with suitable brief explanation, make the content of the theorem clear to an intelligent person who's never heard of it, would be enough. Michael Hardy (talk) 06:17, 14 August 2013 (UTC)[reply]

....I've never used any sort of ray-tracing software, but I copied your code into a file called Villarceau.pov and at the unix prompt, typed this:

povray Villarceau.pov

I got an error message saying there was no file called checker2.png . And there is that file name on line 62. That's where I am so far with this. Michael Hardy (talk) 18:09, 14 August 2013 (UTC)[reply]

Yeah, you need to create two textures. The comments in the source mention them:
// 1024x512 checkered image, with 64x64 cells.
Basically, make two 1024x512 images with 64x64 checkered squares. checker2.png is the green texture on the inside, and checker.png is the blue texture on the outside. — LucasVB | Talk 22:58, 14 August 2013 (UTC)[reply]
It could take a while since I'm not familiar with the software. And I'll probably need to use black-and-white. How do I get a still picture from one point in the process? Michael Hardy (talk) 05:48, 15 August 2013 (UTC)[reply]

Dirac Delta Function animation request

[edit]

I absolutely love love these animations! They have completely changed the way I view math - and I mean completely! As I am old and my brain doesn't work all that well any more, could you do a simple Dirac delta function animation that matches the confusing symbology of the equation. I have a hard time wrapping my head around that one.

Cheers! — Preceding unsigned comment added by Agenttex11 (talkcontribs) 14:07, 18 August 2013 (UTC)[reply]

That's a great suggestion! A few people in my diff. eq. class also had trouble understanding it. I think I have just the right idea, too. I'm adding it to the top of my to do list! Thanks! — LucasVB | Talk 14:55, 18 August 2013 (UTC)[reply]

Fourier Transformation Animated GIF

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That GIF absolutely did the trick ! Thank you! I were on the quest to understand what it means if a memory has 333MHz bandwidth, can transport 5.3G/s data with respect to what I would see on an (really good) Oscilloskop. I already start to wonder how a bus 1-and-0-Data transfer to time axis to frequency animation would look like ;)

88.64.10.115 (talk) 08:56, 27 September 2013 (UTC)[reply]

I would also like to applaud this graphic. It is amazing and helped me understand the relationship between the time domain and frequency domain representations of the data.

Toltus (talk) 23:01, 11 November 2023 (UTC)[reply]

Template:IMDb name has been nominated for deletion. You are invited to comment on the discussion at the template's entry on the Templates for discussion page. STATic message me! 16:26, 5 October 2013 (UTC)[reply]

Nuclear Pasta Request

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Hi Lucasvb,

I'm a physicist who is currently developing the nuclear pasta article and one of the reddit askscience mods recommend you as a potential artist.

I think the article would be greatly improved by having an "artists rendition" of the phenomena due it's geometric nature. It's an emerging, but still relatively obscure nuclear physics topic, and as such there aren't any images in the public domain. There are plenty of visualizations and animations present in the literature, but it's sadly proprietary to universities and journals (so I don't think Wikipedia would allow them), and they are also unfortunately fairly technical, lacking the sort of pedagogical format of something like a textbook illustration.

One of the pages the article cites includes a snapshot of a nuclear pasta simulation which is similar to what I have in mind.Link

The basic idea for the illustration is this: I'd like the article to be able to show a cross section of a neutron star crust, showing the phases and transitions between the spherical phase, rod phase, slab phase, and the voids in the matter at the bottom.

I don't imagine a great deal of complexity being involved in the project- even a sketch would suffice. At most, it would be a static 3D rendering. If you have time and if the project I described interests you, I'll happily share more details and some of the inspiration images I've collected from the literature, as well as my own conceptual sketches.

Thank you for taking the time to read my request, have a nice day. Sudoiusudo (talk) 22:07, 6 October 2013 (UTC)[reply]

It looks interesting, but I honestly have no idea what the illustration would be like, really. The link you gave me didn't help me much. If you could provide me with a rough hand-drawn sketch to get the genera idea, we could discuss it further. Thanks! — LucasVB | Talk 22:45, 6 October 2013 (UTC)[reply]
This is my hand drawn sketch Link. I'm not the best artist so I'll have to direct you to other images, such as the ones here, which show the respective phases and how they morph into one another. The middle image in the bottom row in that PDF gives a better idea of what I was trying to show at the bottom of my sketch with the 'swiss cheese' voids. Do you think an image like my sketch is within the realm of possibility? Thanks Sudoiusudo (talk) 23:46, 10 October 2013 (UTC)[reply]

POTD notification

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POTD

Hi Lucas,

Just to let you know that the Featured Picture File:Line integral of scalar field.gif is due to make an appearance as Picture of the Day on November 12, 2013. If you get a chance, you can check and improve the caption at Template:POTD/2013-11-12. Thank you for all of your contributions! — Crisco 1492 (talk) 21:48, 23 October 2013 (UTC)[reply]

Source Availability

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Hi Lucas,

I've recently discovered that you're behind many of my favorite images and animations on Wikipedia. So first off let me say thanks for your awesome work!

I'm doing a brief lecture on topics related to Morse theory next week and am interested in creating some images for it. In part due to being fed up with some of Mathematica's limitations and in part being inspired by your work here, I've decided to finally try out POV-Ray, and am so far definitely enjoying myself! (The syntax is surprisingly intuitive!)

My plan is to at least have images for the standard torus example, and I've figured out how to get the basic shapes (cap, half-torus, etc.) without much effort. I also have ideas on how to do this (using intersection and difference), but I'd be really curious to see how someone as seasoned as yourself would go about it (among other things).

This leads me to my question: is the source for the tori available anywhere online? I got the impression from your FAQ that it might be and so I figured I'd check. Even if it's extremely messy, I'd love to take a look to compare.

Either way, thanks again for all your hard work! —mathemajor (talk) 21:52, 30 November 2013 (UTC)[reply]

I'm sorry, but I don't have the source code for that image anymore. I never bothered uploading it to Wikipedia because the image is very simple. All I did was using a texture to make the horizontal stripes, and added some very thin torus for the black lines connecting the sides. It shouldn't be too hard to reproduce the image. — LucasVB | Talk 23:06, 30 November 2013 (UTC)[reply]
No problem at all. I'm still getting used to POV-Ray but figured out how to make what I needed after my initial comment. Thanks for getting back to me! —mathemajor (talk) 03:07, 4 December 2013 (UTC)[reply]

Some baklava for you!

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Thank you for your work! Llluomengran (talk) 02:05, 18 December 2013 (UTC)[reply]

Notification of automated file description generation

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Your upload of File:Anthill inside.png or contribution to its description is noted, and thanks (even if belatedly) for your contribution. In order to help make better use of the media, an attempt has been made by an automated process to identify and add certain information to the media's description page.

This notification is placed on your talk page because a bot has identified you either as the uploader of the file, or as a contributor to its metadata. It would be appreciated if you could carefully review the information the bot added. To opt out of these notifications, please follow the instructions here. Thanks! Message delivered by Theo's Little Bot (opt-out) 12:00, 29 December 2013 (UTC)[reply]

Piano Spiral Videos. Is there an app for that.

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Just watched ALL of the Piano Spiral videos. They are amazing. I was wondering what it would take to create an app to display the spiral in real time as someone played a keyboard. You could use it in a math, physics, or music class. (I teach math.)

Anyway, I love your work. I've seen some of the animations before but never knew the source.

Damon

PS You should patent the idea! — Preceding unsigned comment added by Wildmath (talkcontribs) 18:05, 20 January 2014 (UTC)[reply]

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You are awesome! Алекснадр Мехоношин (talk) 21:45, 21 January 2014 (UTC)[reply]

Hi Lucas: Ola Beleza Pura!

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Is there any hope to learn the level of Math you have shown in these pages at an age above 50? Responda honestamente em Portugues, para grunchofgiantsatyandexpontocom

Grunchofgiants e um livro muito incrivel escrito por um dos visionarios mais autenticos que conheci na minha vida. Como voce ele trabalhou para a humanidade e o seu nome: Buckminster Fuller! Gostaria de poder aprender a matematica atras das animacoes que voce fes. Obrigado irmao, na luz e na paz,MP

An RfC that you may be interested in...

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As one of the previous contributors to {{Infobox film}} or as one of the commenters on it's talk page, I would like to inform you that there has been a RfC started on the talk page as to implementation of previously deprecated parameters. Your comments and thoughts on the matter would be welcomed. Happy editing!

This message was sent by MediaWiki message delivery (talk) on behalf of {{U|Technical 13}} (tec) 18:27, 8 March 2014 (UTC)[reply]

Congratulations, your tau gif was used in a USA Today website article

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www.usatoday.com/story/news/nation-now/2014/03/14/pi-day-tau-math/6410959/

You got some usage on Discovery's DNews too. --Joseph Lindenberg (talk) 19:46, 14 March 2014 (UTC)[reply]

Nomination of Albino Blacksheep for deletion

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A discussion is taking place as to whether the article Albino Blacksheep is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Wikipedia:Articles for deletion/Albino Blacksheep until a consensus is reached, and anyone is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article. TheMesquito (talk) 09:00, 20 March 2014 (UTC)[reply]

Excellent triangular wave as sum of sine waves animation

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The pause when n=50 to give time to actually appreciate the final state (unlike many others which loop back to the start instantly) and the slow count for the first few iterations when changes were most obvious then accelerating as they were more subtle was really well handled. Thank you for getting it so very right. I see that the image has been updated since last I visited the page so thanks too for making a good illustration better. Waerloeg (talk) 14:03, 1 June 2014 (UTC)[reply]

A barnstar for you!

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The Original Barnstar
you're work is great! Conrad Kilroy (talk) 19:22, 27 August 2014 (UTC)[reply]

A barnstar for you!

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The Special Barnstar
Your illustration that decomposes a signal into its component sine waves is the greatest explanation ever. The world needs more like you! Slashdottir (talk) 20:36, 29 August 2014 (UTC)[reply]

POTD notification

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POTD

Hi Lucas,

Just to let you know, the Featured Picture File:Circle radians.gif is due to make an appearance as Picture of the Day on September 23, 2014. If you get a chance, you can check and improve the caption at Template:POTD/2014-09-23. Thank you for all of your contributions! — Crisco 1492 (talk) 00:40, 5 September 2014 (UTC)[reply]

A barnstar for you!

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The Graphic Designer's Barnstar
Today's POTD File:Circle radians.gif is a simple and hence the best picture I saw in a long time. Thanks for creating that. Loved it. Your whole gallery of artwork is amazing. Keep it up! §§Dharmadhyaksha§§ {T/C} 05:10, 23 September 2014 (UTC)[reply]

A sincere thank you

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Hi Lucas,

As a student with no natural talent for maths, your animations and gifs have been extremely helpful to the point where they have given me those rare and enthralling lightbulb moments which make me love maths.

Thank you for all your hard work which has made mine and undoubtedly many more people's lives so much better.

Sincerely,

Martin N.

118.138.13.59 (talk) 23:05, 16 November 2014 (UTC)[reply]

Thank you

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Regarding Circle_radians.gif

I had real issues understanding the concept. But the animation solved it for me. I finaly understood the underlying basics - Thanks a lot! --87.162.46.170 (talk) 12:53, 5 March 2015 (UTC)[reply]

Another go?

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Am trying it yet again: Wikipedia:Articles for deletion/Aquaria (band) (2nd nomination) KDS4444Talk 20:47, 26 March 2015 (UTC)[reply]

Time and frequency domains of a function

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Hi, May I use your animation of time and frequency domain of a function in a presentation? I will not have access to internet during the talk. I tried to download the file but I only get the first image. I would like to use it to simply to explain a fourier transformation. Your visualization is excellent! Many thanks. 70.90.25.149 (talk) 14:16, 17 April 2015 (UTC)elizabeth ewhuntley@aol.com[reply]

Hi! Thanks for the compliment! The animation is in the public domain (I always release them as such), so you are totally free to use it. It would be nice to give credit, of course! :)
Here's the direct link for the full animation: https:/upwiki/wikipedia/commons/5/50/Fourier_transform_time_and_frequency_domains.gif
There's also a continuous Fourier transform animation, but that one is not as clear! — LucasVB | Talk 15:40, 17 April 2015 (UTC)[reply]

A bowl of strawberries for you!

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your work is the best! I love your blue solids series Blacklemon67 (talk) 06:59, 23 April 2015 (UTC)[reply]

gyroscope operation animation

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gyro animation
gyro animation

Hi, I wanted to ask you how you made this animation because I'm having trouble doing the same thing. I guess you just parented each object from the disk to the gyroscope frame and then animated each piece. The problem in my case is that I want to control only the external circle and I want the rest of the animation to be solved by some constraints. Did you by any chance do it this way ? (I'm using blender, but I just need the main idea)Gamnamno (talk) 20:15, 23 October 2015 (UTC)[reply]

Hello. I actually grouped from outside-in, and applied the inverse rotation to inner gimbals. That way no matter what I did, the final disk would remain in place. Not sure if that helps. — LucasVB | Talk 20:35, 23 October 2015 (UTC)[reply]

Thanks. I got some close results but still not exactly it. I started a forum page here : http://blenderartists.org/forum/showthread.php?384307-Rig-Constrain-a-3-axis-Gyroscope I don't see anything in Blender such as inverse rotation as you say, but I think there's a way around it.

Inverse rotation is just rotating around the same axes by a negative angle. Rotating everything by 30 degrees then by -30 degrees restores the original position. — LucasVB | Talk 00:28, 24 October 2015 (UTC)[reply]

I found a constrain in Blender that inverts the rotation from an object. But still can't find the solution ! So let me recap : I don't apply any constraint on the external part. Then the middle part is constrained by the external, and the center by the middle. But did you invert the rotation on all 3 axes or only the one given by the joints, or the 2 others ? Do I miss something ? Maybe once passed 180 or 360 degrees in Blender something happens. — Preceding unsigned comment added by Gamnamno (talkcontribs) 01:01, 24 October 2015 (UTC)[reply]

I updated the forum page. Can you take a look ? It's actually more Blender related than I thought but maybe you'll have an idea.— Preceding unsigned comment added by Gamnamno (talkcontribs) 02:43, 24 October 2015 (UTC)[reply]

I'm not sure what's happening. Let me see if I can find my old source code. — LucasVB | Talk 03:50, 24 October 2015 (UTC)[reply]
Drats! It's not on my hard drive. I may have lost it! :(
But you should start simple. Try to make one gimbal work, before you do both. That's what I did. I remember getting some weird results like yours when I first started. — LucasVB | Talk 03:58, 24 October 2015 (UTC)[reply]

Forum updated ! The problem is now solved. Thanks a lot man !— Preceding unsigned comment added by Gamnamno (talkcontribs) 01:59, 27 October 2015 (UTC)[reply]

Square/Hexagon sin graphs

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Hey, i was browsing through your tumblr and one animation that really interested me was the regular polygon sin graphs. I see that the circle one is x = A*sin(omega * t) and I am interested in knowing the equations of the other two. Can we chat about them in my email? [email removed] LizmoGadget (talk) 23:20, 9 November 2015 (UTC)[reply]

Hi,
You appear to be eligible to vote in the current Arbitration Committee election. The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to enact binding solutions for disputes between editors, primarily related to serious behavioural issues that the community has been unable to resolve. This includes the ability to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail. If you wish to participate, you are welcome to review the candidates' statements and submit your choices on the voting page. For the Election committee, MediaWiki message delivery (talk) 22:12, 30 November 2015 (UTC)[reply]

Hi there, this is the most simple way to explain rad. Thank you very much! I will spread the Link to the corresponding Wikipedia-Entry. Happy Christmas

Carsten Brauer B20110 (talk) 11:05, 18 December 2015 (UTC)[reply]

What do you do for a living?

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I looked at your profile but I couldn't find what exactly your job is -that is if you have one, I don't like to assume everyone has to have one, but that's probably just me-. You seem to have knowledge in many areas and I am curious about what does a man like you do for earning money. Sorry if I'm being too curious 46.1.53.174 (talk) 21:07, 9 January 2016 (UTC)[reply]

I'm currently a physics student. I try to be frugal and survive off the occasional freelance coding gigs I get. — LucasVB | Talk 18:12, 10 January 2016 (UTC)[reply]

A barnstar for you!

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The Graphic Designer's Barnstar
Great work! Nicoguaro (talk) 02:47, 10 February 2016 (UTC)[reply]

Speedy deletion nomination of Genecyst

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Hello LucasVB,

I wanted to let you know that I just tagged Genecyst for deletion, because the article doesn't clearly say why the subject is important enough to be included in an encyclopedia.

If you feel that the article shouldn't be deleted and want more time to work on it, you can contest this deletion, but please don't remove the speedy deletion tag from the top.

You can leave a note on my talk page if you have questions. Mr RD 16:00, 26 March 2016 (UTC)[reply]

Nomination of Genecyst for deletion

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A discussion is taking place as to whether the article Genecyst is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Wikipedia:Articles for deletion/Genecyst until a consensus is reached, and anyone is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article. Adam9007 (talk) 22:26, 26 March 2016 (UTC)[reply]

Nomination of Gens Sound Record for deletion

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A discussion is taking place as to whether the article Gens Sound Record is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Wikipedia:Articles for deletion/Gens Sound Record until a consensus is reached, and anyone is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article. czar 04:34, 17 April 2016 (UTC)[reply]

Congratulations!

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Congratulations to your great gifs, they are amazing! And thank you very much for releasing them into the public domain. I see that some of them were produced with povray and you include the source code, which is super. May I ask what software you used for File:Circle_radians.gif and do you also have source code available? Cheers, AxelBoldt (talk) 22:55, 15 May 2016 (UTC)[reply]

Hello! Thank you for the comments. :)
For that GIF, I used a custom drawing library, so the source code isn't available, I'm afraid. I can help you reproduce it somewhere if that helps. Cheers! — LucasVB | Talk 23:09, 15 May 2016 (UTC)[reply]
No, that's OK. I was looking around for software to produce similar animations (equations moving around etc.) and was just wondering what the experts use... Have you since come across any software package that makes these things easy? AxelBoldt (talk) 17:45, 16 May 2016 (UTC)[reply]
Not really. Closest thing I can recommend is using Processing. In the end, my philosophy is to just use a library to draw graphics. Demanding that it also works in terms of mathematics just seems like asking for too much. For instance, Mathematica can make pretty good images, but it's incredibly cumbersome to work with, and is full of bugs on 3D rendering of shapes. — LucasVB | Talk 18:00, 16 May 2016 (UTC)[reply]
I'll check out Processing, thanks! AxelBoldt (talk) 22:01, 16 May 2016 (UTC)[reply]

File:Pangaea continents.svg

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Which type of map projection is used for this image? Thanks! SharkD  Talk  04:59, 15 November 2016 (UTC)[reply]

I traced it from a non-public domain image I found ages ago. I'm afraid I can't find it again to really check. Sorry. This information really should be available. I'd have hoped that image would have been made obsolete by now. — LucasVB | Talk 23:38, 15 November 2016 (UTC)[reply]

ArbCom Elections 2016: Voting now open!

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Hello, LucasVB. Voting in the 2016 Arbitration Committee elections is open from Monday, 00:00, 21 November through Sunday, 23:59, 4 December to all unblocked users who have registered an account before Wednesday, 00:00, 28 October 2016 and have made at least 150 mainspace edits before Sunday, 00:00, 1 November 2016.

The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.

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ArbCom Elections 2016: Voting now open!

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Hello, LucasVB. Voting in the 2016 Arbitration Committee elections is open from Monday, 00:00, 21 November through Sunday, 23:59, 4 December to all unblocked users who have registered an account before Wednesday, 00:00, 28 October 2016 and have made at least 150 mainspace edits before Sunday, 00:00, 1 November 2016.

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A kitten for you!

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Thank You!

Hemantcompiler (talk) 17:48, 20 February 2017 (UTC)[reply]

Nomination for deletion of Template:Vgm sample

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Template:Vgm sample has been nominated for deletion. You are invited to comment on the discussion at the template's entry on the Templates for discussion page. BrownHairedGirl (talk) • (contribs) 21:04, 25 March 2017 (UTC)[reply]

A barnstar for you!

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The Barnstar of Diligence
Good work, keep it up. Iamaaditya (talk) 15:02, 30 April 2017 (UTC)[reply]

Nomination for deletion of Template:VG music sound formats

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Template:VG music sound formats has been nominated for deletion. You are invited to comment on the discussion at the template's entry on the Templates for discussion page. Frietjes (talk) 00:39, 15 June 2017 (UTC)[reply]

ArbCom 2017 election voter message

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A barnstar for you!

[edit]
The Original Barnstar
Greaty Lufernaal (talk) 01:19, 6 January 2018 (UTC)[reply]

Genecyst listed at Redirects for discussion

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An editor has asked for a discussion to address the redirect Genecyst. Since you had some involvement with the Genecyst redirect, you might want to participate in the redirect discussion if you have not already done so. — Rhododendrites talk \\ 18:36, 28 September 2018 (UTC)[reply]

File source problem with File:JetEngineDiagram.png

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Thank you for uploading File:JetEngineDiagram.png. I noticed that the file's description page currently doesn't specify who created the content, so the copyright status is unclear. If you did not create this file yourself, you will need to specify the owner of the copyright. If you obtained it from a website, please add a link to the page from which it was taken, together with a brief restatement of the website's terms of use of its content. If the original copyright holder is a party unaffiliated with the website, that author should also be credited. Please add this information by editing the image description page.

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ArbCom 2018 election voter message

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Nomination for merging of Template:Cleanup-SVG

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Template:Cleanup-SVG has been nominated for merging with Template:Cleanup image. You are invited to comment on the discussion at the template's entry on the Templates for discussion page. Thank you. ShakespeareFan00 (talk) 08:25, 9 March 2019 (UTC)[reply]

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Hi. How do you make menu :

{{User:LucasVB/Menu}}

 ? TIA --Adam majewski (talk) 14:37, 7 April 2020 (UTC)[reply]

It's just a Template! Just create the page User:Adam majewski/Menu and you can do the same. The template is a way to embed a page into another. — LucasVB | Talk 14:49, 7 April 2020 (UTC)[reply]

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Notice

The article Orchestral Game Music Concerts has been proposed for deletion because of the following concern:

Non-notable, unsourced music concerts fail both WP:GNG and WP:CONCERT TOUR that has been tagged as being unreferenced for eight years with no parent article for it to redirect to.

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"Halo pc" listed at Redirects for discussion

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A discussion is taking place to address the redirect Halo pc. The discussion will occur at Wikipedia:Redirects for discussion/Log/2021 April 6#Halo pc until a consensus is reached, and anyone, including you, is welcome to contribute to the discussion. 86.23.109.101 (talk) 12:57, 6 April 2021 (UTC)[reply]

Pangaea

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Hi,

My name is Nicholas Harper. I am a new author and I recently wrote a book! I was writing you because it's a fantasy novel and I used your map (with fictitious places) as the land for my setting. I was wondering do you mind if I use it? If not I will make changes, but due to copyright issues that could occur in the future, I had to ask.Please respond back,

Nicholas Harper 2601:CA:4400:61E0:395F:5B11:3A3C:E686 (talk)

Hey Nicholas. Congrats on the book! It is my understanding that this license does not allow your alterations to be sold commercially ("share alike"). However, I would recommend you get a better illustration, as mine is pretty basic and you could probably draw a better one. :) — LucasVB | Talk 20:15, 15 August 2021 (UTC)[reply]

ArbCom 2021 Elections voter message

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Nomination of SNESAmp for deletion

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A discussion is taking place as to whether the article SNESAmp is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Wikipedia:Articles for deletion/SNESAmp until a consensus is reached, and anyone, including you, is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article until the discussion has finished.

InvadingInvader (talk) 20:14, 10 October 2022 (UTC)[reply]

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ArbCom 2023 Elections voter message

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Hello! Voting in the 2023 Arbitration Committee elections is now open until 23:59 (UTC) on Monday, 11 December 2023. All eligible users are allowed to vote. Users with alternate accounts may only vote once.

The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.

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An image created by you has been promoted to featured picture status
Your image, File:Light dispersion conceptual waves.gif, was nominated on Wikipedia:Featured picture candidates, gained a consensus of support, and has been promoted. If you would like to nominate an image, please do so at Wikipedia:Featured picture candidates. Thank you for your contribution! Armbrust The Homunculus 16:00, 4 October 2024 (UTC)[reply]

A barnstar for you!

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The Original Barnstar
Your curve rectifying animation is incredible. Unknow0059 (talk) 10:23, 24 October 2024 (UTC)[reply]