Talk:Curve of constant width

message: Is there any way this page can be expressed in more laymans terms? I'm not a mathematician, but I am an engineer and even I had some trouble figuring out what the article was saying. -lommer 21:41, 6 Apr 2004 (UTC)
replies: text: I'll try.  It really is too concise now.  When I figure out how to put in some diagrams things should get better (help with the diagrams would be appreciated). Dan Gardner 23:18, 6 Apr 2004 (UTC)
thread_title: terminology

message: Can someone explain what happens to the saddle while the Reuleaux-wheeled bike is being ridden? The recent times article said that it didn't bob up and down Humphrey Dalzell (talk) 11:37, 28 May 2009 (UTC)
replies: text: The bike frame rests  (via rollers) upon the top of the wheel, and is not supported by the wheel axle as normal bikes are. So although the wheel axle will bob up and down, the bike itself won't. 82.13.19.74 (talk) 23:33, 28 May 2009 (UTC)
thread_title: bicycle

message: Could someone change the first line to what it really is supposed to say?  I would change it myself, but I don't know what should be there.ΠΑΕ.ΠΑΟΚ ₯ (talk) 20:15, 22 November 2009 (UTC)
replies: text: So what makes you think it's wrong now? —Tamfang (talk) 00:20, 24 November 2009 (UTC)

text: I can only guess that it was talking about set intersection, as opposed to geometric intersection.  I've rewritten it to make more sense. — Smjg (talk) 19:46, 29 April 2012 (UTC)
thread_title: first sentence of lead

message: It's a little odd that this article doesn't contain any mention of "roller" or rolling at all, since that's one of the main properties which they have and name which they are known by... AnonMoos (talk) 07:31, 28 November 2010 (UTC)
thread_title: roller

message: : Curves of constant width can be generated by drawing circular arcs centered on the vertices of a regular or irregular convex polygon with an odd number of sides (triangle, pentagon, heptagon, etc.).
I believe, but cannot prove, that a CCW can be built on any set of lines in the plane, so long as no two are parallel. —Tamfang (talk) 18:38, 30 November 2010 (UTC)
replies: text: I'm just going by what's in my source (Cundy and Rollett).  There are diagrams there explaining details of the general triangular and pentagonal constructions; I may try to re-create the basic structural relationships of those diagrams in SVG form in the future.  It might also be nice to have a GIF animation showing a flat sheet of material sliding across the top of two rollers (maybe a Reuleaux triangle  and an irregular pentagonal-based curve). AnonMoos (talk) 19:53, 30 November 2010 (UTC)
replies: text: There's a roller photo at :File:Reuleaux_triangle_54.JPG , but it doesn't show too much in that static form (an animation would be more informative). AnonMoos (talk) 07:06, 12 December 2010 (UTC)
replies: text: Did the general triangular construction diagram and added it to the article; probably won't do the pentagonal... AnonMoos (talk) 12:28, 13 December 2010 (UTC)
replies: text: Nice diagram. What is y?--Salix (talk): 13:58, 13 December 2010 (UTC)
replies: text: It's explained in detail on the image description page if you click on the diagram (go to :File:How to make mathematical roller curve based on triangle.svg and scroll down slightly...) AnonMoos (talk) 15:21, 13 December 2010 (UTC)
thread_title:  most general 

message: I can't tell from :sv:Liktjocking what the English equivalent is, or whether it has any relevance. AnonMoos (talk) 12:03, 16 December 2010 (UTC)
thread_title: Swedish?

message: Martin Gardner's "Mathematical Games" column in the February 1963 issue of Scientific American ("Curves of Constant Width, One of which Makes it Possible to Drill Square Holes") has additional facts and generalizations, but I probably won't be using it to update this article any time soon... AnonMoos (talk) 14:20, 30 July 2017 (UTC)
thread_title: Additional source

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