Realist753
  • Member for 7 years, 9 months
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Can a non-rotating ball have angular momentum?
2 votes

The answer depends on the kind of object - particle or field - you mean, and if you refer to spin- or orbital angular momentum. Invisible or "hidden" electromagnetic field spin angular momentum is ...

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Is Angular Momentum truly fundamental?
2 votes

There exists a very simple and concise semi-classical explanation of the electron's spin angular momentum, without the notion of rotation of any material object: Qualitatively speaking, the electron’...

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How does a spinning electron produce a magnetic field?
1 votes

It can be proven that nothing "rotates" in an electron. Its spin angular momentum $\hbar/2$ is completely included in its electromagnetic field with the assumption that the "dressed" electrons ...

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Does the electromagnetic field "spin"?
1 votes

Spin corresponds to quantized angular momentum. However a substantial fraction of the spin angular momentum of an electron is included in its surrounding electromagnetic field where a nonzero Poynting ...

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force on a moving charge in magnetic field
1 votes

A more comprehensive and deeper explanation of the Lorentz-force is based on relativistic electrodynamics as given in: http://chip-architect.com/physics/Magnetism_from_ElectroStatics_and_SR.pdf by ...

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Speed of light vs speed of electricity
0 votes

In a strict sense there is no $"$speed of electricity$"$. It must be distinguished among charge and EM-field. Speed of electricity can either be the drift speed of electrons (amounting a few mm/sec,) ...

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Where does the electron get its high magnetic moment from?
0 votes

The electron spin can be associated to the electromagnetic field surrounding a free electron. Note that an electron not only has a charge e but a magnetic momentum (Bohr`s magneton $\mu_B= e/(2 m_e ) ...

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Relativistic charge density in a closed loop
0 votes

The problem of charge conservation is much simpler than stated, if you consider that current always needs a closed circuit and that the electron gas is compressible. Firstly you will note that all ...

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Does a current carrying wire produce electric field outside?
-1 votes

Your problem is clearly and comprehensively treated by Hans De Vries in: http://chip-architect.com/physics/Magnetism_from_ElectroStatics_and_SR.pdf The quintessence is that a current carrying wire ...

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Is the charge of a current carrying wire real or hypothetical?
-1 votes

Let the probe move with v <<c, i.e. sub-relativistic thus only first-order in v effect relevant. Order of magnitude of v may be the drifting speed of conduction electrons.

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