We are all familiar with visible light (red, orange, yellow, green, blue, indigo and violet) but this is only a small part of the full electromagnetic (EM) spectrum. Depending on the frequency of the wave, you get different parts of the spectrum but they all have certain characteristics in common.
Gamma rays
500 MHz 1000 MHz
UHF VHF 7–13 100 MHz 50 MHz FM
VHF 2–6
107 106
AM Long-waves FIG. 18.13 The EM spectrum ranges from low to high frequency
