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In 1985 an astronaut noticed this physical behavior of a handle, that turned out to be the proof of a theorem: the tennis racket theorem (also dubbed the Dzhanibekov effect)
[read more:buff.ly/2odWCC9]
[video, HD: buff.ly/2Jofc8h]
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Do not wait. Please subscribe ASAP to get all episodes of the Untold story of Project Alpha. It is riviting and you have never heard this before, anywhere. You think you know, but you do not.
podcasts.apple.com/us/podcast/wor…
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Hands down, my favorite commercial of the past six months: youtu.be/rJWe_mbd3-E
via @YouTube @LibertyMutual

YouTube
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There are 12 black dots at intersections in this image. Your brain won’t let you see them all at once. Here's why [read more: bit.ly/2qxnuj5]

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New theory: The Titanic sank when it was hit by the large modern cruise ship that was right behind it.
A SLICE OF HISTORY@asIiceofhistory
The titanic in comparison to a modern cruise ship
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