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Bookmark or Share- electromagnetism - Is the magnetic field really a relativistic effect ...The magnetic field is not a relativistic effect of an electric field. A magnetic force on a single charge can always be transformed into a purely electric force in another reference frame. The same is not true of a magnetic field .
- What is the magnetic field of a radially moving current?A problem with the answer above is that the differential form of Ampere's law says that the curl of the magnetic field has to be proportional to the current density at every point in space. Therefore, if the current density is radial and, evidently, non-zero, then there has to be a non-zero magnetic field around.
- electromagnetism - Relation between Electric and magnetic fields ...Mostly by a varying magnetic field or moving electrons in a external magnetic field. To underline it, a constant magnetic field in relation to the electrons don't influence charges. This is understandable: the magnetic dipoles of the electrons will be oriented with an external magnetic field, but a permanent flow of such a way oriented ...
- Can someone please explain magnetic vs electric fields?As you pointed out correctly, a magnetic field is created by a moving charge (current) with respect to the observer. If the charge is at rest with respect to the observer, only an electric field is seen. The fact that a magnetic field looks the way it does can be derived by making use of a Lorentz transformation.
- Magnetic field insulators - Physics Stack ExchangeThere's only two ways to do that. First, with mu-metals, second with superconductors. both will "become magnetized" in the field. (the super conductor will generate surface currents from the magnetic field, and those currents will generate their own magnetic field that will exactly oppose the magnetic field lines entering it). $\endgroup$
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