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Wikipedia:Featured picture candidates/HypotrochoidOutThreeFifths.gif

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Original - The red curve is a hypotrochoid drawn as the smaller black circle rolls around inside the larger blue circle (parameters are R = 5.0, r = 3, d = 5).
Reason
An excellently made animation that instantly communicates the concept of a hypotrochoid.
Articles this image appears in
Hypotrochoid
Creator
Sam Derbyshire
That's a good point actually, I realised my images had quite annoyingly large filesizes but I optimised it with Photoshop and couldn't get much better results. I'd be curious to know how Anevrisme managed to do it! Thanks for the kind words, if anyone can think of other nice maths things that deserve to have images like this I'd be really happy to hear about it, as I find it very entertaining and instructing to make them! (Though I'm not a particular fan of just having to parametrise stuff like deforming a torus into a mug, there's not much going on mathematically in that case...). -XediTalk 00:04, 21 May 2009 (UTC)[reply]

Promoted File:HypotrochoidOutThreeFifths.gif --wadester16 | Talk→ 18:42, 26 May 2009 (UTC)[reply]