The Electromagnetic Spectrum

Region
Wavelength
Frequency (Hz)
Energy (eV)
Click on the phenomenon of interest to you:
Astronomical & Terrestial
Matter & Biological
Technology & Medicine
Gamma Rays Less than 0.1 A Greater than 3x1019 Greater than 105
X-Rays 0.1 - 10 A 3x1019 - 3x1017 105 - 103
Ultraviolet 10 - 4000 A 3x1017 - 7.5x1014 103 - 3
Visible Light 4000 - 7000 A 7.5x1014 - 4.3x1014 3 - 2
Infrared 7000 - 106 A 4.3x1014 - 3x1012 2 - 10-2
Microwaves 10-4 - 0.1 meters 3x1012 - 3x109 10-3 - 10-5
Radio Waves Greater than 0.1 meters Less than 3x109 10-5