Electromagnetic spectrum

The Electromagnetic Spectrum is the name given to the range of Electromagnetic radiation covering all frequencies and wavelengths. It includes radio and TV transmission, Microwaves, Infrared, visible light, Ultraviolet, X-rays, and Gamma rays.

Electromagnetic radiation

All electromagnetic radiation can be described in terms of its Energy, frequency or wavelength. These properties are all related by the following equations:

$\lambda ={\frac {c}{f}}\,\!$ ,

$E=hf\,\!$ ,

where c = 299,792,458 m/s (the speed of light) and h = 6.626 x 10^-34 Js (Planck's constant)