Gravitational lensing in the form of optical equation $\frac{1}{p} + \frac{1}{q} = \frac{1}{f}$?
9671
Do gravitational lenses have a focus point?
33110
The origin of the value of speed of light in vacuum
78506
Do gravitational lenses work on gravitational waves?
56355
What does the equation $P=\vec{F}\cdot \vec{v}$ really mean?
2929
How can we recover the Newtonian gravitational potential from the metric of general relativity?
136779
Does an classical charge that is stationary in a gravitational field radiate?
106119
Why is there no permittivity-type constant for gravitation?
21173
Black hole formation as seen by a distant observer
45131
Derivation of equations of motion in Nordstrom's theory of scalar gravity?
47988
Reflection At Speed of Light
30683
$F=ma$ calculation taking relativity into account?
5247
Physical meaning of non-trivial solutions of vacuum Einstein's field equations
25596
Proportionality constant in crater equations
152252
Tangent vector of photon
1206
GR. Einstein's 1911 Paper: On the Influence of Gravitation on the Propagation of Light
155345
Can we use curved spacetime to measure the one-way speed of light?
155392
When deriving $d\sin\theta=n\lambda$ are the light rays approximately parallel or actually parallel?