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"Microwaves" are radio waves ... those with wavelengths of 10 centimeters or less.

The wavelengths of the signals used for point-to-point microwave communication

are shorter than the wavelengths of the signals used to broadcast radio and TV to

household and automotive receivers, and also longer than the wavelength of the

signals to the GPS receiver in your car.

Microwaves are shorter than the wavelengths used to operate your cellphone.

The microwave range of frequencies (wavelengths) is used for the signals that bring

900 channels of satellite TV directly to the little dish on the corner of your house.

Here's an interesting factoid: Technically, the box in your kitchen that heats the

leftover meatloaf in 13 seconds is not a "microwave" oven. "Microwave" officially

refers to frequencies of 3 GHz and higher (wavelength 10 cm and less). The handy

kitchen appliance operates at the frequency assigned to it, which in the USA is

2.450 GHz (12.24 cm).

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