Bulletproof glass | Outrageous Acts of Science

I do believe it goes without saying, "don't try this at home."

At 1:40 the host of Outrageous Acts of Science goes through the idea of bulletproof glass, alternating layers of glass and polycarbonate.

Then, at 1:55 we get the money quote, "composites are used when you want the properties of two different materials, and you want to put them together for different purposes."