Wikipedia talk:Today's featured picture (animation)/January 20, 2007

The animation, to me, sort of demonstrated the circle as having a circumference of pi, instead of showing the relationship between the circumference AND the diameter. Pardon me, it is rather pretty, but inaccurate.

concurred. __earth ^(Talk) 11:37, 20 January 2007 (UTC)[reply]

actually, i take that back. It's accurate. the relationship between the radius and the perimeter is observable from the diagram. __earth ^(Talk) 11:45, 20 January 2007 (UTC)[reply]

it's not inaccurate, note that the diameter of the circle is 1, since this is exactly how the number line is defined in the first part of the animation. - 80.143.112.207 12:51, 20 January 2007 (UTC)[reply]

This animation plays far too fast for anyone who doesn't already understand pi to understand what the image is showing. It should be slowed down. SECProto 15:58, 20 January 2007 (UTC)[reply]

I agree. It would be better if slowed down - Chris Wood 16:32, 20 January 2007 (UTC)[reply]

I agree. The perimeter of a circle is 2*pi*R, if the circle's radius is one, circunference would be 2*pi, not pi, as stated. So, this animation is WRONG!

But the radius is not 1 but 0.5. --Bjarki 17:42, 20 January 2007 (UTC)[reply]

It shows the diameter as being 1, not the radius. SECProto 18:29, 20 January 2007 (UTC)[reply]

awesome[edit]

This is blowing my mind. I finally understand stupid pi! I love the pedia. jengod 19:56, 20 January 2007 (UTC)[reply]

That was my response, too! The animation was a little too fast, like others have mentioned, but once you realize what it shows it's pretty darn cool. Sam927 21:57, 20 January 2007 (UTC)[reply]

Hold on, so thats how pi is defined? If the diameter of a circle is 1, then its circumference is pi in the same units?Gettingby 23:33, 20 January 2007 (UTC)[reply]

Yes, if you mean circumference=pi*diameter. Art LaPella 06:34, 21 January 2007 (UTC)[reply]