Why is the speed of light not 3 x $10^{8}$ m/s, or why not a round figure for the meter
19850
Why is the speed of light defined as 299792458 m/s?
4350
Rotate a long bar in space and get close to (or even beyond) the speed of light $c$
1674
If the speed of light is constant, why can't it escape a black hole?
146489
What does Lijun Wang's experiment about supraluminal speed of light in a medium mean?
102908
Explaining to an 8-year-old why nothing can travel faster than light
113516
Why can we only add or subtract things of the same dimension (meters/second, newtons, etc)?
84719
Why does a light beam in a moving light clock follows a V shaped path?
37941
Can light travel slower than the maximum?
47242
Time dilation due to change in speed
147571
How does Fermat's principle make light choose a straight path over a short path?
8367
What do physicists mean when they say "speed of light"?
131705
Relativity Of Simultaneity Confusion
56005
Speed of light travel
45888
Minkowski metric -- why does it follow from the constancy of the speed of light?
55971
Why does the (relativistic) mass of an object increase when its speed approaches that of light?
22118
If all motion is relative, how does light have a finite speed?
10781
Accelerating particles to speeds infinitesimally close to the speed of light?