How To Smash Someone’s Head With A Beer Bottle?

If you've ever been in or around a bar fight, you know that the combatants' primarily available real weapons are beer bottles. Although we wouldn't go so far as to conduct a full-fledged research on the subject, it is always a good idea to be aware of how to defend yourself against them and employ them in case things get ugly for you.

But a group of experts at the University of Bern objected vehemently and chose to approach the situation scientifically. They set out to investigate if it is preferable to crack open a person's head with an empty full bottle as opposed to a full one, using mathematics and formulae that just don't seem essential, whatever they could mean.

After thorough investigation, they found that, compared to a full bottle, which releases 40 J of energy when smashed on a skull-like surface, an empty bottle only releases roughly 30 J, which is a startling but still entirely needless discovery.