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Potentially dumb question: wouldn't the existence of a global magnetic field already imply the presence of a global electric field? Or is this discovery a separ
by RandomBK 2y ago
Potentially dumb question: wouldn't the existence of a global magnetic field already imply the presence of a global electric field? Or is this discovery a separate unrelated electric field?
- werediver 2y agoA permanent magnet produces magnetic field, but not electric field (unless it's electrically charged, but that's usually not the case), so no, magnetic field doesn't automatically imply electric field (charge).
- s_dev 2y agoIsn't electricity and magnetism the same force?
- junon 2y agoNot a physicist so this may not be related but AFAIU magnetic fields must change to produce current. Just having a magnetic field does not imply electrical current.
- amelius 2y agoI think what GP meant is that (from one viewpoint) magnetism is an emergent property of the electric field and relativity. Here is a simple explanation: https://www.youtube.com/watch?v=1TKSfAkWWN0 https://www.youtube.com/watch?v=1TKSfAkWWN0
- stinos 2y agoI think OP is asking: if there's a static magnetic field but conductive stuff (say, the oceans) moves through it, doesn that not induce an electric field?
- femto 2y agoVarying electric and magnetic fields are coupled (to form electromagnetic radiation). Static electric and magnetic fields can exist separately.
- est 2y agoper Faraday's law, a moving magnetic field implies an electric field
- darig 2y ago[dead]