What is the action for a photon?
34788
Lagrangian for relativistic massless point particle
28971
Do Photons Move in a Wave Like Pattern?
87598
Can we define the effective mass or the moving mass of a photon?
12916
How does a photon experience space and time?
39208
What identifies an action-reaction pair of forces?
78223
How does a photon travel through glass?
3909
Does $E = mc^2$ apply to photons?
13251
Does a photon in vacuum have a rest frame?
8077
Photons in expanding space: how is energy conserved?
100807
Are the Maxwell equations a correct description of the wave character of photons?
121832
Why do electrons around nucleus radiate light according to classical physics
40288
What's the relation between virtual photons and electromagnetic potentials?
118021
How do you "store" a photon?
19918
What would the collision of two photons look like?
154151
How do single photons travel from here to there
68726
Does photon have size measurement because of its particle nature
157091
Photons in coulomb field