Ad: Obey Refraction It's The Law (Snell's Law Physics) Jigsaw Puzzle
Optical physics humor featuring Snell's law -- also know as the law of refraction. No matter where you are or what you do you'll enjoy the geek physics saying "Obey Refraction It's The Law" on this educational scientific jigsaw puzzle! myPhysics
#obey #refraction #JigsawPuzzle
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