Wikipedia:Featured picture candidates/HypotrochoidOutThreeFifths.gif

HypotrochoidOutThreeFifths

**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

Support as nominator ---- BlastOButter42 ^See Hear _Speak 22:51, 19 May 2009 (UTC)[reply]
Weak support - Very clear and illustrative, I only think there is no need to graduate the axes. -- Alvesgaspar (talk) 23:09, 19 May 2009 (UTC)[reply]
Support In my opinion, graduating the axes make the example a little more concrete: It would be far easier to reproduce the figure with the grid than without. Shoemaker's Holiday (talk) 23:43, 19 May 2009 (UTC)[reply]
Support - wow, an encyclopedic image illustrating what hypotrochoid is—Chris! _ct 06:30, 20 May 2009 (UTC)[reply]
Support Since it is usually defined in terms of parametric equations it would probably be sensible to add it to Parametric equation too. Noodle snacks (talk) 09:16, 20 May 2009 (UTC)[reply]
Support really helps explain a concept thats difficult to word --Thanks, Hadseys 09:19, 20 May 2009 (UTC)[reply]
Obvious Support Ksempac (talk) 11:24, 20 May 2009 (UTC)[reply]
Support - Jaakobou^{Chalk Talk} 12:51, 20 May 2009 (UTC)[reply]
Support This is what online learning is about, wikipedia can lucidly describe a concept using animation technology, while a traditional book/blackboard can't! Lilaac (talk) 17:44, 20 May 2009 (UTC)[reply]
Comment I only just realized that there's actually a lot of similarly excellent animations made by Sam Derbyshire on his user page, many of which are probably as good as this one. I guess we can't nominate all of them, which is a shame, since lots of them seem to be FP quality (although for some reason they seem to be of a very large file size and therefore load slowly; this one appears to have been optimized by Anevrisme). -- BlastOButter42 ^See Hear _Speak 21:31, 20 May 2009 (UTC)[reply]

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...). -Xedi^Talk 00:04, 21 May 2009 (UTC)[reply]

Support. Everything an encyclopedic animation ought to be. Durova^Charge! 23:23, 21 May 2009 (UTC)[reply]
Support, highly educational and encyclopedic. –Juliancolton | ^Talk 17:54, 22 May 2009 (UTC)[reply]
Support Very encyclopedic/informative. Very helpful in explaining such a complex topic. -FASTILY ^(TALK) 05:04, 23 May 2009 (UTC)[reply]
Support - This image is of the bests in matters of encyclopedic, teachful and creative aspects, my congratulations to the creator! - Damërung ^{...ÏìíÏ...}_{__ΞΞΞ_} . -- 19:04, 23 May 2009 (UTC)[reply]
Support this is really cool! — Jake Wartenberg 22:33, 24 May 2009 (UTC)[reply]

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