The back of the envelope comparison isn't difficult. The energy in different forms are doing the same thing. Doesn't your microwave heat a cup of water in abou

The back of the envelope comparison isn't difficult. The energy in different forms are doing the same thing. Doesn't your microwave heat a cup of water in about the same amount of time as a tea kettle? And most tea kettles are bigger than one cup. Now, think about concentrating the same amount of energy to heat up your eyeball. Or worse, concentrated into a tiny point on your eyeball.