I teach myself physics. I find it pretty easy but I was getting stuck on this one principle. I was reading about the four fundamental forces of physics. I read that some particles (i.e. Gravitons, gluons, photons, and muons) are force carriers. How would this work? SIDE NOTE I heard that photons are the force carrier for electromagnetism. Wouldn't there be some light involved wherever magnets are used then? PLease don't think I;m stupid. I'm actually pretty good at physics. This was tripping me up however.