Spinning egg yolks hint at how concussions warp the brain

How do you study concussions without cracking any skulls? Try using an egg scrambler.

In a new study, published Jan. 19 in the journal Physics of Fluids, scientists drew inspiration from how egg scramblers mix up egg whites and yolks without first cracking the shell. The device simply rotates the uncracked egg at super-high speeds, and that force gets transmitted to the liquid inside, popping the yolk. Similarly, in most concussive brain injuries, the skull doesn’t crack, but the brain is still injured, the scientists thought. 

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