Is the speed of light constant relative to the observer?
22402
If I am travelling on a car at around 60 km/h, and I shine a light, does that mean that the light is travelling faster than the speed of light?
75580
Derivation of the speed of light using the integral forms of Maxwell's Equations
77372
"Speed" of Gravity and Speed of Light
56005
Speed of light travel
10781
Accelerating particles to speeds infinitesimally close to the speed of light?
45888
Minkowski metric -- why does it follow from the constancy of the speed of light?
152937
Which observer's time is proper time?
67661
Is there an observable of time?
13786
A question in Special Relativity
112965
Are virtual particles limited by the speed of light?
139551
A Light is shone out the side window of a spaceship ( moving close to light speed ), will the light still travel at the speed of light in the B axis?
123933
Why is causality preserved in special relativity?
106863
Special relativity and imaginary coefficient of the time coordinate
128242
Are gravitational force and gravitational time dilation proportional?
9016
How can time dilation be symmetric?
56911
Proving invariance of $ds^2$ from the invariance of the speed of light
55971
Why does the (relativistic) mass of an object increase when its speed approaches that of light?