When you tire of pondering the nature of the universe, ask yourself how many rubber bands it takes to make a watermelon explode. Then ask how much you want to see it happen in super slow motion.
Two English gents who call themselves "The Slow Mo Guys" (h/t Daily Mail) wrapped as many rubber bands as they could around a watermelon until it went kerplooey.
Good thing Gavin Free and Daniel Gruchy had time on their hands (guys like this often do) because it took them about 500 rubber bands in 20 minutes before the combined pressure created the visual dramatics. And they condensed it all for you.
The two wrote that they captured the whole mess with a Phantom Flex camera that can shoot 1,600 frames per second. They're called the Slow Mo Guys, remember?
A previous segment featured Gruchy chewing on three biscuits he stuffed in his mouth, then spitting them out at 1,000 frames a second. Lovely.
Create plasma with a grape
DON'T TRY THIS AT HOME: A carefully cut grape in a microwave can create superheated gas if you set things up just right. It may look like a simple household experiment, but be prepared to destroy your microwave if you mess up! (Warning: some language in this video is inappropriate for children.)
Create 'elephant toothpaste'
With yeast, hydrogen peroxide, and assorted household goods, you can create 'elephant toothpaste.' This effect looks a little like one of the popular Diet Coke and Mentos videos on YouTube, but this one is slower and thicker and a little more alien.
Turn a light bulb on in a microwave
Water conducts electricity. Don't believe it? This simple experiment demonstrates the principle in a bright way.
Make your own lava lamp
This one's a little bit complicated, but the end result is impressive and even downright psychedelic.
Lower your voice with sulfur hexafluoride
DON'T TRY THIS AT HOME: In the same way that inhaling helium makes your voice higher, inhaling sulfur hexafluoride makes it lower.