Adidas releases a new ball for every World Cup. At the highest level of play, a ball that behaves in unexpected ways can throw players off. A sports physicist explains the science of this year’s ball.
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Articles on air flow
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Being indoors with other people is a recipe for spreading the coronavirus. But removing airborne particles through proper ventilation and air filtration can reduce some of that risk.
Aerosols are the tiny particles of liquid and material that float around in our environment. When they come from an infected person, they may be a significant source of coronavirus transmission.
