Can we falsify photons having a tiny mass, experiencing subjective time, and traveling slightly slower than $c$ (like neutrinos)?
47568
Is it experimentally proven that photons travel at speed $c$ in vacuum?
81212
Is there really time reversibility in physics?
13563
What really causes light/photons to appear slower in media?
11602
Validity of naively computing the de Broglie wavelength of a macroscopic object
156183
How can we be sure that nature isn't "faking" quantum statistics?
20037
Do photons have acceleration?
141546
Time and distance in a photon's frame of reference
77731
'size' of a photon
81503
Do photons truly exist in a physical sense or are they just a useful concept like $i = \sqrt{-1}$?
115572
Theoretical proof of the constant of speed of light $c$ in vacuum in all frames of references
94442
Fundamental particles identical or just differences very small?
57961
Some doubts about photons
119639
Do photons bend spacetime or not?
26806
Virtual photons, what makes them virtual?
56005
Speed of light travel
27825
Bending of light - photon's inertia instead of mass
158808
Do photons have relativistic mass?