- #1
FredMadison
- 47
- 0
Hi everyone!
As I understand it, magnetism can be explained by special relativity when charges are moving - length contraction in different frames of reference leads to coulomb forces between the charges in these frames.
But how does magnetism in a permanent magnet arise? Are there currents flowing in the metal?
As I understand it, magnetism can be explained by special relativity when charges are moving - length contraction in different frames of reference leads to coulomb forces between the charges in these frames.
But how does magnetism in a permanent magnet arise? Are there currents flowing in the metal?