Everyone knows that explosions are cool. But let's be honest, if you spend a lot of time on the Internet you've probably seen quite a few.

But you probably haven't seen many implosions.

When the difference between the outward facing pressure of a container (the air inside a tank pushing on the inside) is sufficiently lower than the inward facing pressure (the weight of the atmosphere on the surface), a container will collapse on itself suddenly.

Now, that might not sound all that impressive. But check out this GIF we found on Reddit of a railroad tank car imploding after the air is sucked out with the vacuum safety valves disabled:

A jaded Internet user might think that it's sped up or CGI, but it isn't. Here's a YouTube video of the implosion as proof: