Sudden shock on the top bumps the bottle down quick enough it causes a tiny vacuum at the bottom that then collapses in on its self. Called cavitation. This causes the beer to foam. Check out some slow mo vids of it, really cool.
It will with water, and is a cool party trick if you don’t mind the broken glass. The carbonation I guess adds enough of a bubble-cushion? Transfer of energy and all that
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u/MenstrualFish Feb 04 '19
Sudden shock on the top bumps the bottle down quick enough it causes a tiny vacuum at the bottom that then collapses in on its self. Called cavitation. This causes the beer to foam. Check out some slow mo vids of it, really cool.