Is the value for the speed of light in vacuum irrelevant?
35464
Why do universal constants have the values they do?
11053
Planck's Law in terms of wavelength
93598
Is it proven experimentally that the speed of causality (light) is the maximum speed?
112965
Are virtual particles limited by the speed of light?
17152
Do all massless particles (e.g. photon, graviton, gluon) necessarily have the same speed $c$?
37345
Why can't massless particle exceed speed of light?
22118
If all motion is relative, how does light have a finite speed?
3952
Why does the speed of the Electromagnetic wave in the material depend on the frequency of the wave where as they are constant in vacuum (freespace)?
106119
Why is there no permittivity-type constant for gravitation?
137260
How is quantum mechanics compatible with the speed of light limit?
45953
How can I explain the scientific basis of the constant speed of light to a $c$-decay proponent?
27593
Why is travelling around the speed of light a problem?
26372
Is electric field inside a cavity necessarily zero?
8077
Photons in expanding space: how is energy conserved?
56065
How can the speed of light be a dimensionless constant?
101023
Does special relativity make magnetic fields irrelevant?
8367
What do physicists mean when they say "speed of light"?