Does the speed of light depend on mass density?
66523
Does the optical density of a medium depend upon its mass density?
15685
Does slowing light violate relativity?
98593
Will speed of light in any denser medium will be same for all the inertial frame in that medium?
90122
Is there experimental evidence that massless particles such as photons attract massive objects?
3909
Does $E = mc^2$ apply to photons?
55971
Why does the (relativistic) mass of an object increase when its speed approaches that of light?
26670
Explain how (or if) a box full of photons would weigh more due to massless photons
158808
Do photons have relativistic mass?
45953
How can I explain the scientific basis of the constant speed of light to a $c$-decay proponent?
37345
Why can't massless particle exceed speed of light?
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)?
120621
Speed of Dark experiment, does it *really* travel faster than light?
19829
Is light affected by gravity? Why?
8367
What do physicists mean when they say "speed of light"?
88019
How can mass affect spacetime?
119953
What is the meaning of speed of light $c$ in $E=mc^2$?
28488
I am confused about the idea that the speed of light is independent of the speed of the source of light