 Quote by geordief
Ok now I am getting further out of my depth but hopefully can summon up an intelligible question.
When the 3 non-gravitational forces cause interreactions between particles do these particles need to have mass?
Is that a case by case scenario?
In cases where the particles do have mass (and are affected by one of those non-gravitational forces) does the mass affect the strength of the attraction or repulsion?
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I don't believe they NEED to have mass, but it is a fact that they all DO have mass. (Other than the photon) The amount of mass each particle has does not change the strength of the interactions. For example, a Proton and an Electron both feel the same amount of force from the Electromagnetic force, yet the Proton is thousands of times more massive than the electron. This results in an electron being MUCH easier to accelerate than the proton.
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