This is pretty cool, I have always wondered why people tapped the top of the can when handed a shaken soda can to settle it before opening. It seems to me that the reason the can explodes when opened is due to there being fluid between the gas trapped inside and the mouth of the can when decompression occurs. Whatever trapped CO2 is at the top of the can will exit harmlessly so tapping the top will have little effect, but that CO2 which is trapped and clinging to the sides of the can will cause and explosion of soda when decompression occurs.
Flicking the sides of the causes the CO2 trapped there to rise to the top, where it will exit harmlessly when opened.
I am not sure why this wouldn’t work with Diet Coke though. Thoughts?
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