# What percentage of the electromagnetic spectrum is visible light?

###### July 28, 2009 2:42PM

Good question-- See the link. Roughly the visible region is 300 nm to 650. so that's 350 nm total. The electromagnetic spectrum goes from 10 Megameters to 1 picometer. So the percentage of the spectrum occupied by visible light is tiny, just 3.5 X 10-9 divided by 10^19 ---- So that's 3.5x10-26 %. So many zeros....! Yikes. Gamma rays (picometers) (10-12)

Hard X-rays

Soft X-Rays

Extreme ultraviolet

Near ultraviolet

Visible light

Near infrared

Moderate infrared

Far infrared

Extremely high frequency (Microwaves)

Super high frequency (Microwaves)