Talk:Golf ball: Difference between revisions
←Replaced content with '{{Wikiproject Golf|class=start|importance=top}} I don't know how they create a golf ball with 333 dimples. http://www.srixon.com/ball_hrx333.aspFat' |
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I don't know how they create a golf ball with 333 dimples. |
I don't know how they create a golf ball with 333 dimples. |
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http://www.srixon.com/ball_hrx333. |
http://www.srixon.com/ball_hrx333.asp |
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See, there's a @#$! 3-piece ball that has 333 dimples. How could it be possible? |
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[[Image:Golf_ball_333.png|thumb|237px|A possible 3-piece mold design? (You can also use cube)]] |
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[[Image:Dodecahedron.gif]] |
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Let's see, a [[dodecahedron]] has 12 faces, 30 edges and 20 vertices. Now let: |
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* each face has ''x'' dimples (not including dimples located on edges and vertices); |
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* each edge has ''y'' dimples (not including dimples located on vertices, ''y'' can be 0); and |
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* each vertex has ''z'' dimples (''z'' = 0 or 1) |
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The ball will have 12''x'' + 30''y'' + 20''z'' dimples. And that number has to be 333. |
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But since 12''x'' and 30''y'' and 20''z'' are all even numbers or 0, the ball could not have odd-numbered dimples unless you want to sacrifice its perfect symmetry. This is ridiculous! This is not logical! It drives me crazy! I can't sleep! -- [[User:Toytoy|Toytoy]] 17:57, Oct 20, 2004 (UTC) |
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: Do not assume that x,y and z are integers. There can be half or third dimples on the faces, i.e. a dimple can be on an edge or vertex. -- [[User:Lipi|Lipi]] 20:43, 30 January 2006 (UTC) |
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----- |
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: "And since there is no dimple located on any great circle" |
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How can this be? There are an infinite number of great circles through |
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any point on a sphere, so some of them must pass through a dimple. [[User:Molinari|Molinari]] 19:01, 21 Oct 2004 (UTC) |
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:: Sorry for my mistake. -- [[User:Toytoy|Toytoy]] 22:55, Oct 21, 2004 (UTC) |
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: It probably should say "There is a great circle that does not intersect any of the dimples." I have to question the statement: "A golf ball can have not a single dimple at all. But most balls on sale today have about 300 to 450 dimples." This makes no sense. |
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:: There are multiple great circles that does not intersect any of the dimples. However with certain designs, it is impossible to let a great circle not to intersect any dimple (e.g. a ball covered with densely populated large and small dimples). -- [[User:Toytoy|Toytoy]] 22:55, Oct 21, 2004 (UTC) |
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== Possible advert == |
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I removed the following text which read suspiciously like an attempt to promote this company's product. Feel free to re-add it with sources. [[User:Sandstein|Sandstein]] 08:48, 16 April 2006 (UTC) |
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:Some of the new technological advances in a golf ball have hexagonal dimples. This new technology enables the ball to have less drag than the normal dimpled golf balls. The balls have variations on the size of the dimples and also some have deeper dimples than others, Callaway is the main supplier of the hexagonal design golf balls, such as the Callaway HX. |
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== Dimples and drag == |
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I've corrected the section which previously said dimples increase drag. The opposite is true (see the link in the article to 'Flight Dynamics of a Golf Ball' - sorry new user no idea how to creat a hyperlink). Same priciple which means that a shark's rough skin reduces the drag through the water compared to if it had smooth skin. MarkW |
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== What's on the inside of the ball? == |
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Can somebody described the inside of a typical golf ball (ie. what's under the dimpled skin) please. [[User:Albatross2147|Albatross2147]] 12:39, 17 May 2007 (UTC) |
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==Metric vs. Customary== |
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"Jason Zuback broke the world ball speed record on an episode of Sports Science with a golf ball velocity of 204 mph. The previous record of 302 km/h (188 mph) was held by José Ramón Areitio, a Jai Alai player." |
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Shouldn't the first speed be converted into kilometers, too? Also, I notice how the first speed's main measurement was in mph, while the second speeds main measurement is km/h. Shoundn't they both be the same? |
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--[[User:Turbokoala|Turbokoala]] ([[User talk:Turbokoala|talk]]) 21:06, 20 January 2008 (UTC) |
Revision as of 15:51, 20 March 2009
Golf Start‑class Top‑importance | ||||||||||
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I don't know how they create a golf ball with 333 dimples.
http://www.srixon.com/ball_hrx333.asp
See, there's a @#$! 3-piece ball that has 333 dimples. How could it be possible?
Let's see, a dodecahedron has 12 faces, 30 edges and 20 vertices. Now let:
- each face has x dimples (not including dimples located on edges and vertices);
- each edge has y dimples (not including dimples located on vertices, y can be 0); and
- each vertex has z dimples (z = 0 or 1)
The ball will have 12x + 30y + 20z dimples. And that number has to be 333.
But since 12x and 30y and 20z are all even numbers or 0, the ball could not have odd-numbered dimples unless you want to sacrifice its perfect symmetry. This is ridiculous! This is not logical! It drives me crazy! I can't sleep! -- Toytoy 17:57, Oct 20, 2004 (UTC)
- Do not assume that x,y and z are integers. There can be half or third dimples on the faces, i.e. a dimple can be on an edge or vertex. -- Lipi 20:43, 30 January 2006 (UTC)
- "And since there is no dimple located on any great circle"
How can this be? There are an infinite number of great circles through any point on a sphere, so some of them must pass through a dimple. Molinari 19:01, 21 Oct 2004 (UTC)
- Sorry for my mistake. -- Toytoy 22:55, Oct 21, 2004 (UTC)
- It probably should say "There is a great circle that does not intersect any of the dimples." I have to question the statement: "A golf ball can have not a single dimple at all. But most balls on sale today have about 300 to 450 dimples." This makes no sense.
- There are multiple great circles that does not intersect any of the dimples. However with certain designs, it is impossible to let a great circle not to intersect any dimple (e.g. a ball covered with densely populated large and small dimples). -- Toytoy 22:55, Oct 21, 2004 (UTC)
Possible advert
I removed the following text which read suspiciously like an attempt to promote this company's product. Feel free to re-add it with sources. Sandstein 08:48, 16 April 2006 (UTC)
- Some of the new technological advances in a golf ball have hexagonal dimples. This new technology enables the ball to have less drag than the normal dimpled golf balls. The balls have variations on the size of the dimples and also some have deeper dimples than others, Callaway is the main supplier of the hexagonal design golf balls, such as the Callaway HX.
Dimples and drag
I've corrected the section which previously said dimples increase drag. The opposite is true (see the link in the article to 'Flight Dynamics of a Golf Ball' - sorry new user no idea how to creat a hyperlink). Same priciple which means that a shark's rough skin reduces the drag through the water compared to if it had smooth skin. MarkW
What's on the inside of the ball?
Can somebody described the inside of a typical golf ball (ie. what's under the dimpled skin) please. Albatross2147 12:39, 17 May 2007 (UTC)
Metric vs. Customary
"Jason Zuback broke the world ball speed record on an episode of Sports Science with a golf ball velocity of 204 mph. The previous record of 302 km/h (188 mph) was held by José Ramón Areitio, a Jai Alai player."
Shouldn't the first speed be converted into kilometers, too? Also, I notice how the first speed's main measurement was in mph, while the second speeds main measurement is km/h. Shoundn't they both be the same?
--Turbokoala (talk) 21:06, 20 January 2008 (UTC)