Why does a photon have momentum but no mass?

When a particle interacts with other particles to transfer energy and momentum, we refer to the particle that receives the energy and momentum as the particle with mass, and the particle that gives off the energy and momentum as the particle without mass. Since photons are the particles of light, this means that photons do not have mass.

Why doesn't a photon have mass?

The photon is massless. In other words, it has no rest mass. If it had mass, then it would have to travel at the speed of light. If it traveled at any lesser speed, it would have more mass than it would have without the mass. This would cause a photon to slow down and have mass.

Why do photons have momentum but no mass?

The photon is an elementary particle which is associated with the electromagnetic force and has no mass. It is not made of matter, but of a set of properties that can travel through empty space. In fact, each photon has an energy that is equal to the amount of energy it would take to create an equivalent amount of matter.

Why a photon have mass and no momentum in water molecule?

A photon is the elementary particle that carries energy and momentum. Its mass and properties are related to the energy it carries. If you press a button, the energy of a photon will increase. If you put a block of water in front of the button, the photon will not be able to transfer more energy to the water. The photon is absorbed by the water and will now transfer less energy to the water. This means that the energy of the photon will decrease. If you do this repeatedly, the

Why does a photon have momentum but no mass in water molecules?

The particle that mediates the electromagnetic force is the photon. It has no mass and so it doesn’t interact with itself or the other particles. If two photons collide, they pass through each other. One can imagine two photons of light passing through a wall. Another photon that enters the wall from the other side will pass straight through the wall as well. This is because the photons have no mass, or very little mass, so they don’t interact with the wall.