Talk:Diameter

From Wikipedia, the free encyclopedia

WikiProject Mathematics
Mathematics Portal
This article is within the scope of WikiProject Mathematics, which collaborates on articles related to mathematics.
Mathematics rating: Start Class Mid Priority  Field: Geometry
One of the 500 most frequently viewed mathematics articles.

Contents

[edit] 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)

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)

[edit] triple a systems

Hi,

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

[edit] 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

[edit] 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)

[edit] Diameter Symbol

[edit] 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)

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

[edit] 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)

[edit] 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)

The American spelling is also the British spelling. There's no such word as diametre. --Zundark 18:04, 11 August 2007 (UTC)
Is that so? I believe you, but it's rather illogical. --The monkeyhate 19:55, 12 August 2007 (UTC)