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radio waves
An electromagnetic wave having a wavelength between 1 millimetre and 30,000 metres. Radio waves are used for transmitting radio and television signals. Many celestial objects, such as pulsars, emit radio waves.
An electromagnetic wave having a wavelength between 1 millimetre and 30,000 metres. Radio waves are used for transmitting radio and television signals. Many celestial objects, such as pulsars, emit radio waves.