- #1
sspitz
- 21
- 0
Why does a metal sheet between two wires not have a shielding effect on the magnetic field? Considering the magnetic force can be explained as the electric field in a different frame.
With wires changing frames is a little complicated, but take this simplified situation. In the lab frame (L), there is a current carrying wire. Next to it a test charge is moving with speed v, parallel to the wire. Going to the frame of the test charge (F), I can use lorentz contraction to explain the magnetic force in L as an electric force in F. But what if I surround the test charge by a conductor? In L, the magnetic field should still act. In F, the electric field should be neutralized...
With wires changing frames is a little complicated, but take this simplified situation. In the lab frame (L), there is a current carrying wire. Next to it a test charge is moving with speed v, parallel to the wire. Going to the frame of the test charge (F), I can use lorentz contraction to explain the magnetic force in L as an electric force in F. But what if I surround the test charge by a conductor? In L, the magnetic field should still act. In F, the electric field should be neutralized...