All of the visible and some of the infra-red, up to about 1200nm.
radiation
The part of the electromagnetic spectrum with the lowest frequency and longest wavelength is radio waves. They are used for communication, broadcasting, and radar.
Radio Frequency
IrDa
Infrared. :)
The electromagnetic spectrum
radio waves (part of the electromagnetic spectrum)
X-Ray Fam.
The part that we call "Extremely Low Frequency Radio Waves".
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Electromagnetic waves can travel in a vacuum. Radiowaves, which are used in television signals, are one part of the electromagnetic spectrum.
it is used to see visible light in the atmoshere