De-Broglie waves explain about the nature of the wave related to the particle. Einstein explained the momentum (p) of a photon with the given formula
p=mc——–(1)
c = speed of light.
The energy (E) of a photon is given as
E = mc2,
E=hλ
hλ=mc2
m =hλ/c2 ————-(2)
h= Planck’s constant(6.62607015×10−34 Js)
λ = wavelength of light
substituting equation (2) in equation (1) we get
Rewriting the equation we get
