Mass, energy, and photons.

Nothing else can reach the same speed as photons. Photon is a particle that seems to have no mass. But as I wrote many times before photons should have mass. The reason for that is that without mass photons cannot transport energy. And without this ability lasers and other things will not work. 

Ernst Rutherford said once that "certainly photon must have mass". But nobody measures that mass yet. In some theories the photon is only so "hairy" or its quantum field "shines" that photon flows away from other particles.  

So, could the answer for that be found in the photon's ability to be at the same time wave motion and particle? There is the theory that a photon is "flat" when it travels in space. That flat form would be the result of tunneling. That means the photon is very close to the thing called the superstring. And if the photon is like tape when it hits the medium wall that means the impact area of energy is so small that it's hard to measure. 

When a photon hits to quantum fields of the atoms it adjusts them to a higher energy level. And then those particles are sending energy quantum that pushes them away from each other. 

How do photon clones themselves?

When a photon's energy level rises it acts like all other particles. When energy stress ends the photon sends energy quantum.  And then that energy quantum stresses other particles. That causes a chain reaction where those particles resend photons until the quantum system reaches a minimum energy level. 

Sometimes I wrote that maybe a photon is a stable particle that sends wave motion. The idea of that thing was that a photon can clone itself. Or create other photons. The fact is that those photons are not forming from nothingness. The minimum energy principle also affects photons.

 And they attempt to reach a minimum energy level like all other particles. The minimum energy principle means that an object (particle, molecule, etc.) attempts to reach the same energy level as its environment.  So researchers can rise the photon's energy level, stressing them with electromagnetic radiation like magnetic fields. 

When the energy stress of a photon ends it sends radiation impulse to other particles around it. That radiation impulse or wave motion will adjust the energy level of the quantum fields higher level. And then those particles are sending energy quantum or photon when radiation stress ends. That is the thing that transforms matter visible. 

https://en.wikipedia.org/wiki/Photon