# WHY LIGHT HAS A MASS OF ZERO. By Elvince Ager

During the formation of light, the energy is converted to a particle (mass) using E=mc2. But we know that photons do not have mass. What follows is a mathematical derivations

The particle has a momentum (p) defined by Planck’s constant (h) and wavelength ƛ as;

From relativity we know that;

From quantum mechanics energy is defined as;

h is the Planck’s constant

f is the frequency of oscillation of a particle.

Therefore;

Dividing all sides by C

From wave mechanics:

Substituting into the equation and doing the operation we get that;

but mass by speed (MC) is momentum (p) hence

From the wave mechanics equation above rearranging the equation gives us;

Substituting p with the first equation, we find that

The derivation of this equation shows that the photon formed has only velocity mass is zero because from

the value of f is zero because a photon is a wave packet that does not have a definite wavelength and therefore no frequency.

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