Wild New Study Suggests Gravity Can Exist Without Mass
bitcrafter @ bitcrafter @programming.dev Posts 2Comments 280Joined 2 yr. ago
bitcrafter @ bitcrafter @programming.dev
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It helps to realize that mass is just a bookkeeping label that we assign to the "internal" energy of a system, where the choice of what counts as being "internal" is somewhat arbitrary and depends on the level we are studying.
For example, if you measure the mass of the nucleus of some atom, and then compare your measurement to the sums of the masses of the protons and neutrons inside of it, then you will see that the numbers do not agree. The reason for this is that much of the mass of a nucleus is actually the energy of the strong force bonds holding the nucleons together.
But you can actually drop down another level. It turns out that the vast (~ 99%) majority of the mass in the proton in turn does not come from the quarks but from the energy of the gluon field holding them together.
And if you drop down yet another level, the quarks get their mass through their interactions with the Highs field.
So in short, it is energy all the way down.