Colors: frequencies & wavelengths (in vacuum)

AM radio ? 1 MHz 100’s of m

FM radio ? 100 MHz m’s

microwave ? 10 GHz cm - mm

Infrared (IR) 1012 - 4x1014Hz mm - 700 nm

visible 4x1014 - 7.5x1014 700nm -400nm

Ultraviolet (UV) 7.5x1014 - 1017 400 nm - 1 nm

x-ray & ? ray > 1017 Hz < 1 nm

[This slide will be repeated after we see how we get these values.]

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