Proof that conservation of chalk dust doesn't apply to professors. The universal constant is that 90% will end up on your clothes, 9% on your face, and 1% actually forming legible equations. Some physicists theorize that chalk particles exist in a quantum superposition until observed by students, at which point they collapse onto the nearest dark-colored garment.
The Chalk Dust Theorem

chalk-memes, professor-memes, lecture-memes, academia-memes, teaching-memes | ScienceHumor.io
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