Free / Open-Source Physics & Math Illustrations
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(May include some that pertains chemistry, engineering and related fields.)



Physics Illustrations from Jacopo Bertolotti
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Twitter handle: @j_bertolotti
https://twitter.com/j_bertolotti/status/1030470604418428929

Most of these are animated gifs.

Here is the collection on Wikimedia:

https://commons.wikimedia.org/w/index.php?search=jacopo+bertolotti&title=Special:MediaSearch&go=Go&type=image

Some useful contents:

* 2-D gradient descent
  https://commons.wikimedia.org/wiki/File:Gradient_descent.gif

* Moire pattern
  https://commons.wikimedia.org/wiki/File:Moire.gif