Post by mds62 on Jan 7, 2021 10:26:20 GMT -5
We know that two moving charges exert magnetic force in each other.
So two charges at rest on the surface of earth don't exert magnetic force for a viewer in earth. but for a viewer in space, earth moves around the sun. So the the two charges move parallel to each other and thus attract each other.
Similarly we know that the sun moves wrt the other parts of milky way so two stationary charges at the surface of sun may also exert force on each other depending on depending on what part of milky way we consider to be at "rest" .
Similarly for any two charges in space, we may say that they move art some reference frame.
Does that mean all charges exert magnetic force on each other? (But that doesn't make sense)
Why/why not
So two charges at rest on the surface of earth don't exert magnetic force for a viewer in earth. but for a viewer in space, earth moves around the sun. So the the two charges move parallel to each other and thus attract each other.
Similarly we know that the sun moves wrt the other parts of milky way so two stationary charges at the surface of sun may also exert force on each other depending on depending on what part of milky way we consider to be at "rest" .
Similarly for any two charges in space, we may say that they move art some reference frame.
Does that mean all charges exert magnetic force on each other? (But that doesn't make sense)
Why/why not
