Brushing Your Teeth in Zero Gravity [VIDEO]


Today marks 331 since Sir Isaac Newton's Mathematical Principles of Natural Philoshopy (Philosophiæ Naturalis Principia Mathematica in Latin) was published in England by Royal Society. A series of three books, Principia (as it's commonly referred to) covers “motion of bodies in the absence of any resisting medium“. Book 2 discusses the motion of those bodies through resisting mediums and Book 3 covers observations of gravity throughout the Universe.

So, to celebrate Newton's fundamental contribution to science, here's a video of an astronaut showing us how to brush our teeth in the absence of gravity…

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