OK FINE, magnetism is explained away by relativity

[Dropout]

http://psi.phys.wits.ac.za/teaching/Connell/phys284/2005/lecture-01/lecture_01/node13.html

But what about induced current? My brain is full now, can't think.hehe: http://www.physics.uoguelph.ca/applets/Intro_physics/kisalev/java/indcur/index.html

 

[lbrits]

Afaik there are configurations of the electric and magnetic field (dependent on the sign of E^2 - B^2, which cannot be transformed into purely electric configurations by a Lorentz transformation.

 

[George Jones]

E \cdot B and E^2 - B^2 are both Lorentz-invariants. If B=0 and E \neq 0 in one frame, then E \cdot B = 0 and E^2 - B^2 > 0 in that frame, and hence in all frames.

Also, if E \cdot B \neq 0 or if E \cdot B = 0 and E^2 - B^2 < 0 in one frame, then there does not exist a frame in which B = 0.

 

[Dropout]

No comprende, but thanks for the effort.