Regions of the Electromagnetic Spectrum Spectrum of Electromagnetic RadiationRegionWavelength (Angstroms)Wavelength (centimeters)Radio> 109> 10Microwave109 – 10610 – 0.01Infrared106 – 70000.01 – 7 x 10-5The Electromagnetic Spectrum www.pas.rochester.edu › ~blackman › ast104 › spectrum