Learn about the experiment which proved light is a wave. This experiment proves that light is a wave by shooting light through a tight slit. I also go over equation and theories for calculating the pattern that appears.

Prince Rupert’s teardrop is a weirdly shaped teardrop of glass that is weird because it is incredibly durable for how small it is. It’s created by melting glass over cold water and letting the molten drop bead off into the water.

This experiment demonstrates what happens when lithium, an alkali metal, is placed in water. I extract lithium from a battery and place it in water to demonstrate the very visual reaction.