radio wave
Noun
Meaning
an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m
Source: WordNetSynonyms
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Examples
Bunches of electrons passing by the openings to the cavities excite radio wave oscillations in the cavity, much as a guitar's strings excite sound in its sound box.
Beam waveguide antenna A beam waveguide antenna is a type of complicated Cassegrain antenna with a long radio wave path to allow the feed electronics to be located at ground level.
Analog modulation methods A low-frequency message signal (top) may be carried by an AM or FM radio wave.
FM uses frequency modulation of the radio wave to reduce static and interference from electrical equipment and the atmosphere.
For example, a human voice can be sent as a radio wave or microwave by making the wave vary to correspond variations in the voice.
For example, many hydrogen atoms emit a radio wave photon that has a wavelength of 21.12 cm.