Exploding Capacitor Carnage

Why exploding capacitors? Why desecrate such a useful, universal electronic component?

I recently did a post on electrical safety. In it, there was a section on capacitors where I mentioned that small, low voltage capacitors can be dangerous because they can explode if the conditions are right.

This got me thinking what if I were to produce a video of this phenomenon to demonstrate it? The idea also sounded like a load of fun, so I went ahead with it.