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011011100
Cool. Anything else like it?
britta
My friend and I write a physics/art/geometry/math blog with gifs for illustrations: http://danielwalsh.tumblr.com/ - denser posts, but hopefully fun. (Here's also a list of posts, since they're so long that the blog can be hard to browse: http://danielwalsh.tumblr.com/tableofcontents )

I also recommend http://blog.matthen.com/ (tons of math gifs with source code) and http://visualizingmath.tumblr.com/ (lots of gifs and other images along these lines).

scott_s
I liked the slinky one so much I submitted it.
chm
Your blog is now on my (short) reading list.
husted
This was exactly how I made sprite animations back in my Amiga demo coding days. Take a look at early C64/Amiga demos and you'll recognize these patters.
susi22
Ah Mathematica:

    $ curl -s http://4.bp.blogspot.com/-MPv_CwvvwKQ/Ulrw3TfdgyI/AAAAAAAAAEw/YsRPmU6C5xM/s1600/trefoil_rotate_white.gif |strings|grep -i created
    UCreated by Wolfram Mathematica 9.0 for Students - Personal Use Only : www.wolfram.com
Would love to see the source for them.
Osmium
Upvote for teaching me the "strings" command :) Never heard of that one before! Seems really useful.
bburky
If you're wanting metadata, consider exiftool also:

    $ curl -s http://4.bp.blogspot.com/-MPv_CwvvwKQ/Ulrw3TfdgyI/AAAAAAAAAEw/YsRPmU6C5xM/s1600/trefoil_rotate_white.gif | exiftool -
Output contains:

    Comment : Created by Wolfram Mathematica 9.0 for Students - Personal Use Only : www.wolfram.com
BHSPitMonkey
That simple parabolic reflection animation explained the concept more elegantly than words ever could, I think.
rohitv
Interesting, but I still have a headache since I looked at the gifs about an hour ago. Maybe it's just me but I would advice putting a warning somewhere.
B-Con
When I opened the first page I thought that it would be a page of unrelated GIFs. I saw the first one, read the accompanying paragraph, and stopped to think about it. I thought for a while before proceeding on, at which point I noticed that I had just thought through the next several GIFs of explanation.

That's why math is fun. You can always participate in the analysis.

XaspR8d
Excellent! I'll have to spend a while exploring the archives. I just happened to have "proved" to myself the linearity of a very similar animation a few weeks ago. :)

http://i.imgur.com/fxHj3kZ.gif

icambron
These are really neat, but one thing I don't understand is the animation they linked to (i.e. the post that inspired the OP) [1]. Unlike the animations in mathgifs, my brain isn't interpreting anything there as rotational motion. Am I missing something?

[1] http://beautyandthemaths.tumblr.com/post/62281036101/the-ave...

mythealias
That was the same with me. I guess it is because the dots are already colored, thus leading one's focus towards the translation. However if you ignore the colors and imagine a 3-petal flower, then you can see the flowers rotate counter-clockwise. Try following the outer edges where the density of dots is sparse and less confusing to form a mental image of the petal.
laumars
The dots are further spaced apart so so your eyes are drawn towards individual balls rather than the image as a whole. Plus as the balls are already coloured and you have ball tails, it's easier to see the ball paths.

Also, worth mentioning is the balls on this follow a subtly different path as they don't intersect the centre of the shape like they do in the article's gif.

philbarr
Anyone know a good place to plot the mathematical envolope at the bottom of the page? But like, quite big?

I know it might seem a little facile but a nice plot like that would look pretty cool on my website. :)