Where does the mass of a proton come from?
34280
Why does the quarks binding energy add mass to nucleons instead of reducing it?
104024
Does the mass of an electron change with its "energy state"?
55085
How come a photon acts like it has mass in a superconducting field?
37326
Angular momentum with respect to the centre of mass
87598
Can we define the effective mass or the moving mass of a photon?
22090
Does the (relativistic) mass change? Why?
157882
Why are gluons believed to be massless?
96923
Why do electrons orbit protons?
123260
How massive can an atom get?
125791
What happens if we put together a proton and an antineutron?
47638
Mass and Newton's Second Law
15605
What is the difference between weight and mass?
89206
Is there a mass spectrometer software that can measure the mass of a proton
76255
Does a gluon have mass or not?
8048
How does one account for the momentum of an absorbed photon?
51589
Can virtual particle have mass?
35204
Where does CMB come/emit from?