GCSE Physics

Microwave Ovens

radio | micro | IR | visible | UV | X | gamma

Microwave ovens also use microwaves, as they can be tuned (all microwaves use a frequency of 2,450 MHz, no matter what their power!) to match the vibrations of water molecules:

microwave oven

The waves just make the molecules vibrate with a larger amplitude, which heats the food up.

[ Related topic: speed, frequency and wavelength ]

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