Re:Bounce denotes battery health (2015)
by nicolashahn on Friday October 12, 2018 @12:41AM
(#18199262)
Similar neat trick: to tell if an egg has been hard-boiled, spin it on its side. A raw egg will immediately stop rotating, a cooked one won't.
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Relevant: https://www.youtube.com/watch?v=HFDHFTffKTc [Spinning Eggs - Mr. Wizard's Supermarket Science]
Re:Bounce denotes battery health (2015)
by maybecorrect on Friday October 12, 2018 @12:37PM
(#18202615)
I thought the trick was you spin the egg, then stop it - a raw egg will continue to rotate because the fluid inside is moving, but a cooked egg won't restart because nothing inside it is moving.
This link shows a hardboiled egg spinning on its end, but otherwise seems to agree with me, though it doesn't quite contradict you: http://www.planet-science.com/categories/experiments/magic-t...