Light has Mass or not?
3909
Does $E = mc^2$ apply to photons?
8865
Could gravity accelerate light?
12267
(Almost) double light speed
55085
How come a photon acts like it has mass in a superconducting field?
67127
Does the speed of light vary in non-inertial frames?
80749
If Energy can be converted into mass, why can it not be converted into charge?
136086
Can light be trapped theoretically?
6845
What if we could give photons some mass?
122836
If light is an electric and (magnetic field), how can it be absorbed?
61077
Is every electromagnetic radiation considered "light"?
52833
Is heat always associated with Light?
138493
How does light oscillate?
24863
How can gravity affect light?
151221
Does a cooling object lose mass as it radiates?
22090
Does the (relativistic) mass change? Why?
64508
Where exactly does energy quantisation come in for light?
33395
What is the experimental evidence that light is an electromagnetic wave?