Copyright © 2005 Dave Whitmore
Wavelength and frequency have an inverse relationship to each other. In other words, as the wavelength gets longer the frequency gets lower. There's a fairly simple relationship between frequency and wavelength:
λ = c/f
where λ is the wavelength, c is the velocity of light (3 x 108 meters/second) and f is the frequency in hertz.
Since we're dealing with very large and very small numbers scientific notation is required to represent the quantities. Here are some shortcuts:
nanometer (nm) = 10-9 meters
Here are some wavelength and frequency data to give a perspective on the relationships.