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Results tagged with electromagnetism
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user 236573
The classical theory of electric and magnetic fields, both in the static and dynamic case. It also covers general questions about magnets, electric attraction/repulsion, etc. Distinct from electrical-engineering.
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Magnetic susceptibility for ferromagnetic materials
Magnetic susceptibility $\chi_m$ is defined by following relation:
$$\vec{M}=\chi_m \vec{H}$$
where $\vec{M}$ is the magnetization density and $\vec{H}$ is the magnetizing field, defined by $\vec{H}=\ …
- 577
6
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3
answers
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Do elementary particles at rest produce magnetic fields?
Let's consider a single charged elementary particle (i.e. NO internal structure, such as the electron) in its rest frame. Does it produce a magnetic field because of its spin? Would a neutral elementa …
- 577
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Minimal coupling in Dirac equation
In the framework of relativistic quantum mechanics (not QFT) the Dirac equation in presence of external electromagnetic field is obtained by means of the minimal coupling, i.e. the substitution:
$$p_ …
- 577