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8h
answered Can FTL-Communication between two points in the same frame of reference break causality?
1d
answered Is Wikipedia's definition of angular velocity incorrect?
Aug
29
answered Tensors, indices and matrix notation - is there a common convention?
Aug
25
answered modelling the sound wave of a guitar string with an equation
Aug
20
answered How does light focused through a lens create bokeh (blurry background)?
Aug
18
answered If there is no definite speed in the universe, only relative speeds, how does energy increase when velocity approaches the speed of light?
Aug
17
answered Special Relativity - two beams of light in opposite direction
Aug
15
answered Electric potential of a sphere at a point on its surface
Aug
15
answered Does the definition of escape velocity apply strictly to an initial velocity of a ballistic projectile?
Aug
12
answered Tidal forces in 3d space
Aug
3
answered Can you tell your absolute speed in space?
Jul
29
answered Why can't we see light travelling from point A to B?
Jun
17
answered Falling into the sun, a thought experiment for trying to understand reference frames
Jun
17
answered Derivation of law of inertia from Lagrangian method (Landau)
Jun
16
answered Why perpendicular vectors do not share components?
Jun
14
answered On the no-faster-than-light in special relativity
Jun
12
answered Wave number of $\mathbf{E}$ field
May
24
answered Best coordinate system for Projectile motion
May
20
answered Determine resultant velocity of an elastic particle-particle collision in 3d space
May
16
answered Relativistic rigid motion