Eli5: Why does a bottled beer explode out when tapped on top by another bottle?

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I’ve been afraid to ask this even though it has happened to me several times in my life. I just laugh and try to alleviate the mess where I can.

In: Physics

5 Answers

Anonymous 0 Comments

Not a scientist, but from what I understand , tapping the top of the bottle causes The bubbles further down in the beverage to activate far more than they normally would, causing it to foam up .

If you’ve ever noticed, the fishing over usually only happens when your bottle is full or nearly full. Try it on a bottle with only 1/4 left, and it’ll rise some,
But won’t overflow.

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