All Questions
6
questions
1
vote
1
answer
70
views
Observing attraction between parallel wires from two perspectives
Two parallel wires through which there flows a current in the same direction. While the electrons are moving, obviously the wires attract each other (the right hand rule for magnetism and electricity)....
- 11
-1
votes
1
answer
132
views
A relativity paradox
Imagine a train moving in constant velocity (inertial frame), a person sitting in the train and a charged particle stationary in relative to the person. This person sees the particle has an electric ...
- 1,148
1
vote
1
answer
210
views
How does a stationary charged particle kept in a magnetic field appear to a stationary and a moving observer?
Suppose a charged particle kept in magnetic field. There are two observers watching it. If one of the observer suddenly starts moving then I know that it will appear to him that the charged particle ...
- 37
4
votes
4
answers
2k
views
Relativistic electromagnetism and electromagnetic forces on 2 protons
The question I have about it is how we can get the same result of net force acting on the individual protons if we judge the system from 2 different reference frames. One using more of the magnetic ...
- 1,324
8
votes
2
answers
718
views
Special Relativity, refractive index and catching up with a wave
Einstein was partially motivated by the following: With Maxwell's equations, a plane wave is a sinusoidal wave that varies in space in time and moving with speed $c$. These variations are linked by ...
- 3,856
3
votes
2
answers
838
views
Does the magnetic force depend on the reference frame?
Force due to a moving charge = qvB
Immagine a charge moving with some velocity on earth and I calculate the force due to its magnetic field with Earth as reference frame for me.
An astronaut in space ...
- 161