Does the photon have a rest mass equal to $E/c^2$, where $E =$ photon energy?
3909
Does $E = mc^2$ apply to photons?
69983
Photon energy - momentum in matter
30745
Why can't photons have a mass?
8099
Does a photon exert a gravitational pull?
95153
Is the electromagnetic mass real?
78924
What is $c$ in the Lorentz force expression?
40288
What's the relation between virtual photons and electromagnetic potentials?
29728
Does the vacuum in QFT have nonzero energy or not?
81880
How can a photon have no mass and still travel at the speed of light?
53455
Relativistic speed/energy relation. Is this correct?
92532
Conservation of Mass during Electron - Positron Annihilation
44239
Why the extra term $\frac{1}{2}(\partial_{\rho}A^{\rho})^2$ in the photon Lagrangian?
57961
Some doubts about photons
141320
Particle energy in general relativity?
116427
$(c^{\mu}\partial_{\mu}-m)\phi(x)=0$ not Lorentz-invariant?
77578
How to get the accurate relativistic momentum form for photons?
100807
Are the Maxwell equations a correct description of the wave character of photons?