text: Microwaves are waves that are part of the electromagnetical spectrum.  The measured distance from tip to tip of the crest of the waves is what makes it considered a 'micro' wave.\n\nMicrowaves are a shorter wavelength than the electromagnetic waves that carry radio signals, but longer than those waves that our eyes can detect in the 'visible' spectrum.\n\nNASA has a very good explanation of them at the Web site below: