* Graphics: Initial notes on physics & math illustrations.

graphics/20220725.Physics-math-illustrations.md

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+Free Illustrations for Physics
+==============================
+
+May include some that pertains chemistry, 
+
+
+
+Physics Illustrations from Jacopo Bertolotti
+--------------------------------------------
+Twitter handle: @j_bertolotti
+https://twitter.com/j_bertolotti/status/1030470604418428929
+
+Most of these are animated gifs.
+
+Examples:
+
+* Moire pattern
+  https://commons.wikimedia.org/wiki/File:Moire.gif