Stuff doesn't melt uniformly in a microwave - you'll find an alternating pattern of hot/cool areas coming out of the microwave emitter. The spacing of these areas corresponds to half of the wavelength of the microwave energy, and can be measured using chocolate-melting. Knowing the microwave's frequency (2450MHz) we can multiply the frequency by the wavelength and determine the speed of light.
kool
willsmith66367 1 year ago