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Mathematician


Jul
12
answered Charged Black holes - What is the Interest in those?
Jul
4
answered How could pinion in automatic quartz watch be rotated at 100K RPM?
Jul
2
answered Objects in Physics as a mathematician would see them
Jul
2
answered How is it possible for astronomers to see something 13B light years away?
Jul
1
answered Doppler effect from an accelerating frame of reference
Jun
29
answered Collision between a rod and a bullet
Jun
28
answered Is there a simple way to define/solve for a null cone for a general spacetime geometry?
Jun
24
answered Notational(?) Question in Whiting's Paper “Mode Stability of the Kerr Black Hole”
Jun
17
answered Nature of spacetime 4-vector and tangent space?
Jun
17
answered Wind generators - why so few blades?
Jun
16
answered Can space-time be defined by the requirement that the physical laws are simple?
Jun
16
answered A tunnel inside the Earth (but not an ordinary tunnel)
Jun
15
answered Singularity-free stationary electro-vacuum solution
May
6
answered How close can two extremal black holes with the same charge can get?
May
5
answered Can the equivalence principle be tested to high precision in a human-sized lab falling through the horizon of a black hole, in principle?
Apr
27
answered Sewing together flat spacetime pieces = flat spacetime?
Apr
10
answered Can a trapped surface be formed by a mass configuration outside of that trapped surface?
Apr
10
answered Trapping a lightray
Dec
16
answered Nonlinear optics as gauge theory
Dec
13
answered What is known about the topological structure of spacetime?