Question

What is the relation between wavelength and wavenumber?

Answer 1

Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength. ... The equation that relates wavelength and frequency for electromagnetic waves is: λν=c where λ is the wavelength, ν is the frequency and c is the speed of light.

Answer 2

Wave is a swing made in water