Re: What is mass (physics)?
Well the main aim of physics today is to unite all phenomenon under the same theoretical model, and the leading candidate for everything that excludes non-quantum effects is the Standard Model. The proposed origin of mass is due to the fields exerted by something called the Higgs boson. In essence, imagine the Higgs particle exerting a field throughout the universe very much like a swimming pool. If something interacts very weakly with the field, just like a streamlined body in a pool of water, it will have very little mass. If it interacts strongly, then it will have large mass. Some special particles, like photons of light, are proposed to have no.interactions at all, and they manifest themselves as massless particles.
This is also why the Higgs boson is such a big deal in the media recently, because the high energy collider at CERN can actually detect energy signatures that are specific to the Higgs boson, and hence providing first proof of the completeness of the Standard Model. But the physics is definitely continually being explored, but this is the best candidate we have so far for the origin of mass.
He looked deep into his eyes and said, "You're perfect."
"No, I'm not. But with you, I don't even care."
Last edited by Morning Morgan; Oct 13th, 2012 at 04:33 PM.