- #1

marcosschiavi

- 4

- 0

If we have two charges A and B that move at the same speed v, I always thought that there would be no magnetic field between them because the relative velocity between A and B is zero. I never noticed that the velocity v in the Maxwell equations were ABSOLUTE. However after reading the article I realized that from the viewpoint of an observer at rest there is a magnetic attraction force, but from the viewpoint of an observer that also moves with velocity v, there is none!

What I don’t understand is how to explain such obvious discrepancy without resorting to the relativity theory (that came much later) and how can someone teach electromagnetism without relativity ...