Talk:Diameter

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other guy

I came to this page to find out about the diameter sign. I believe it's ⌀ (Unicode 2300, looks kind of like ø), as opposed to ∅ (empty set, Unicode 2205, looks kind of like Ø). Maybe one of you math types could mention the diameter sign in the article? -- user:Nate Silva

I'm one of those "math types" and I've never heard of this symbol? In what contexts have you seen it? Michael Hardy 22:27, 11 May 2004 (UTC)[reply]

I'm another "math type" and I've never seen or heard of a a"diameter sign" before. Math textbooks don't use it. --Dbenbenn 06:04, 11 Dec 2004 (UTC)

Diameter sign is used mostly on technical drawings (mechanical) to indicate that shape is round, not square. --andrejj 06:56, 11 Dec 2004 (UTC)

I like the way the symbol is explained here, and the mention of the Scandinavian letter as a replacement. Could someone maybe add an explanation that this is NOT exactly the same as the Greek letter "phi"? It's mentioned here:

http://goldennumber.net/phisymbol.htm

and in Wikipedia:

http://en.wikipedia.org/wiki/Phi#Use_as_a_symbol

Thanks. Marzolian (not logged in)208.185.201.194 (talk) 00:29, 31 March 2011 (UTC)[reply]

I've had some courses in engineering a while ago and have always heard the diameter symbol called "phi". Cosidering that the "source" above never even mentions a "diameter symbol", i'm going to put {{cn}}s on the statements here and at Phi#Use_as_a_symbol. -- Jokes Free4Me (talk) 04:10, 11 February 2012 (UTC)[reply]

triple a systems

Hi,

I am missing a link to the Diameter Computer Protocol (AAA-System). thanks

Definition of a diameter

I have heard that the formal definition of the diameter (for an arbitary closed curve) is that:

A diameter is the locus of mid-points of a set of parallel chords intersecting the curve.

Is it true? If yes, then it should be mentioned in the article. — Ambuj Saxena (talk) 18:04, 22 July 2006 (UTC) s[reply]

Reuleaux polygon

I'm not sure what the definition of diameter of a Reuleaux polygon is but surely it should be mentioned? If it is just the line that goes through the centre then it shouldn't say "the diameter of a circle" but "the diameter of a Reuleaux polygon, and trivially, the circle" or some such, to avoid loss of generality? Triangl 22:54, 16 January 2007 (UTC)[reply]

Diameter Symbol

Only in Word

Alt-8960 doesn't work for me Windows-wide. Only gives diameter sign in Word. Not even in Excel. (WXP SP3, Office 2007) —Preceding unsigned comment added by 94.248.136.34 (talk) 00:21, 3 February 2010 (UTC)[reply]

Windows-wide ALT code for ø is ALT + 0248. (W7 SP1) -- JoelAlejandro

Revert

I don't know why the perfectly good description of the symbol (which was the bast thing about the article) was removed. I found it Cached in Google and I have put it back. --24.80.177.199 —Preceding unsigned comment added by 24.80.177.199 (talk • contribs) 22:44, 1 February 2007

See Help:Reverting for the correct way to restore an earlier version. --Zundark 13:11, 2 February 2007 (UTC)[reply]

In fact, diameter is a very contraversial matter to be treated with utmost respect. -—Preceding unsigned comment added by Aes-Sedai (talk • contribs) 10:11 (2 edits), 15 June 2007

Explanation

I think i understand the language in the "Diameter symbol" section

The symbol or variable for diameter ...

namely that the same character has two purposes, standing for the word diameter, as in

2"⌀ pipe

and also serving as a variable, as in

⌀ = 2"

But it would be better for someone accustomed to regularly using it, as symbol, variable, or (preferably) both, to clean up that paragraph.
--Jerzy•t 06:14, 29 February 2008 (UTC)[reply]

Spelling

The Metre article has the British spelling, so why isn't this called diametre? It seems stupid to change into American spelling just because a prefix has been added. --The monkeyhate 17:50, 11 August 2007 (UTC)[reply]

The American spelling is also the British spelling. There's no such word as diametre. --Zundark 18:04, 11 August 2007 (UTC)[reply]

Is that so? I believe you, but it's rather illogical. --The monkeyhate 19:55, 12 August 2007 (UTC)[reply]

Where on Earth did you get the idea that British spelling is logical? You must be from Sweden or something (and hate monkeys). Justice for All (talk) 00:06, 24 October 2008 (UTC)[reply]

Measuring instruments use "meter" ie, multimeter, the unit of measure is "metre". Not complicated ;-) Zarboki (talk) 00:36, 27 March 2012 (UTC)[reply]

the diameter of the circle

24.17.137.175 (talk) 02:56, 29 March 2009 (UTC)Kiera24.17.137.175 (talk) 02:56, 29 March 2009 (UTC) == Headline text[reply]

what is diameter? the essence of a circle that the endpoint outlines.

Symbol is box

How come the symbol is a box for me? I'm using UTF-8. —M C 10|Sign here! 03:24, 21 July 2009 (UTC)[reply]

Probably because your browser doesn't have access to a font with that symbol in it? See Help:Special characters. —David Eppstein (talk) 03:56, 21 July 2009 (UTC)[reply]

Image confusing?

For someone unfamiliar with the meaning, might the image suggest that the diameter only extends to the centre? So I wonder if we should show the diameter line in red (or do something to indicate that more strongly indicates the extent.--A bit iffy (talk) 10:32, 21 August 2011 (UTC)[reply]