I wonder what the efficiency of absorption is, though. Does 100% of emitted radiation get soaked up by the cup, or does some escape into the surroundings?
It doesn’t get absorbed so much as excite the water particles as it passes through. I’d imagine it would be more effective in the beginning when they’re standing relatively still.
Microwave is blasting radiation at 100% efficiency as soon as you turn it on. Kettles heating elements need to heat up before they can heat the water.
I wonder what the efficiency of absorption is, though. Does 100% of emitted radiation get soaked up by the cup, or does some escape into the surroundings?
It doesn’t get absorbed so much as excite the water particles as it passes through. I’d imagine it would be more effective in the beginning when they’re standing relatively still.