The difference in energy (in joules) between a photon with (red) and a photon with (blue) should be calculated.
A wave is a disturbance or variation that travels through a medium transporting energy without transporting matter. The wavelength is defined as the distance between the two similar points on consecutive waves. The frequency is defined as the number of waves which move through any particular point in one second.
The speed, wavelength and frequency of a wave are interrelated by where are mentioned in meters () and reciprocal seconds ().
Planck’s quantum theory