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Electromagnetic Spectrum

Electromagnetic wavelengths and frequencies

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The electromagnetic spectrum is the distribution of electromagnetic radiation according to energy or frequency or wavelength:

Electromagnetic spectrum light

TypeWavelength
(m)
Frequency
(Hz)
Energy
(eV)*
Electricity 5 105 50 - 60
Long wave, television 105 - 102 < 3 109
Short wave, radio 102 - 10-1 108 - 3 109 < 10-5
Microwave 10-1 - 10-3 3 109 - 3 1012 10-5 - 10-2
Infrared light 10-3 - 7 10-7 3 1012 - 3 1014 10-2 - 2
Visible light 7 10-7 - 4 10-7 4.3 1014 - 7.5 1014 2 - 3
Ultraviolet light 4 10-7 - 10-9 7.5 1014 - 3 1017 3 - 103
X-rays 10-9 - 10-11 3 1017 - 3 1019 103 - 105
Gamma rays 10-11 - 10-13 3 1019 - 1021 > 105
Cosmic rays 10-13 - 10-20 1021 - 1025

* eV = electron-volts

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