Spit, anyone?

Mark Nicas has given some of his best years to spittle. He builds models - the mathematical kind - of how someone else
Mark Nicas has given some of his best years to spittle. He builds models - the mathematical kind - of how someone else's slobber ends up on you. The size of the particles, whether they come out in a dry cough or a wet sneeze, their evaporation rate, air speed - these are all complications, reasons why people like Nicas can spend careers piling up academic papers, all the while building up a healthy respect for pathogens.

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Today is the Great American Spit Out! It's is an annual one day challenge to anyone who uses smokeless tobacco to quit for one day or…

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i would never let anyone spit in mouth｜TikTok Search