Prince Rupert's Drop
Physics is something that has always amazed and intrigued me. So when I see videos on the internet displaying physical properties, especially ones I didn't know about, I'm like a giddy kid at a candy shop where they make candy in front of your face. This video displays a peculiar property of glass: if you drop it in water and let it solidify, the bulbous droplet part is virtually indestructible. But if you snap off the frail little end, the thing explodes! SO cOOL!