Physicists present that flying beer coasters will flip 0.45 seconds into flight

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Enlarge / College of Bonn physicists have been impressed to analyze the aerodynamics of flying beer mats after touring to Munich with a German physics demonstration present. sheck / iStock / Getty Images Plus Many a pub crawler has engaged within the time-honored custom of throwing beer mats—these spherical cardboard coasters which might be ubiquitous …
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