Is the mass of a photon the same as an electron?

A photon has zero “rest mass”, but can have momentum! This means that it has a “relativistic mass” if you will. Electrons have a small “rest mass” but, thankfully, can not get up to the speed of light, where they would have infinite momentum (ouch!)

Is mass of photon is less than electron?

Photon have greater mass. Mass of electron is negligible.

What is the difference between an electron and a photon?

Electrons have a negative charge, which means only that they move away from other negatively charged matter (other electrons) and are drawn to positively charged matter (protons, often ones in the nuclei of atoms). But photons are units (packets of energy) of an electromagnetic wave. They are not bits of matter.

Does a photon have a mass?

Since photons (particles of light) have no mass, they must obey E = pc and therefore get all of their energy from their momentum.

Is photon really massless?

Light is composed of photons, so we could ask if the photon has mass. The answer is then definitely “no”: the photon is a massless particle. According to theory it has energy and momentum but no mass, and this is confirmed by experiment to within strict limits.

Does a photon have any mass?

Since photons (particles of light) have no mass, they must obey E = pc and therefore get all of their energy from their momentum. But an object with zero energy and zero mass is nothing at all. Therefore, if an object with no mass is to physically exist, it can never be at rest.

Do photons have greater mass than electrons?

On the one hand, according to Einstein’s mass-energy equivalence, we tend to say that the mass of the electron changes after the absoption of a photon. On the other hand, we know that a photon is of zero mass. The answer to this question is not simple and requires very advanced laboratory measurements.

Do photons differ in size?

While photons don’t have a physical diameter, and can be treated as point particles, their quantum behavior gives them a probabilistic size. Under this definition there is no absolute “size” to a photon. The cross section also depends upon the energy of the photon and things like its polarization.