Things you can do with your microwave at 3:00am.
"If you are up for slightly more math, you can perform a kitchen experiment that Albert Einstein​ would have loved: prove that light really does zip along at almost 300 million meters per second. Cover a cardboard disk from a frozen pizza with slices of Velveeta and microwave it at low power until several melted spots appear. (You don’t want it rotating, so if your oven has a carousel, prop the cardboard above it.) Measure the distance (in meters) between the centers of the spots. That distance is half the wavelength of the light, so if you double it and multiply by 2.45 billion (the frequency in cycles per second), the result is the velocity of the rays bouncing about in your oven."
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!