All Questions
Tagged with magnetic-fields electrons
106
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Electric/Magnetic Particles
I am given to understand these two things:
Electrons are "the result of", "the cause of", and "the" excitation in the electron field. (Sorry, couldn't come up with a more succinct way to sum up all ...
- 826
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How can Laplace (Lorentz force) move objects (and not charges)?
Hellow everyone,
I got this question that has been teasing me for a while now :
I see how Lorentz force can act on a "free" moving (in a magnetic + electric field) charge, however, it is difficult ...
- 130
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56
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If I spin an electron gun fast enough, would it generate a significant magnetic field?
I wondering if it possible for a beam of electrons to behave like a magnet, with that said, If I spin an electron gun fast enough, would it generate a significant magnetic field?
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Electron interaction with the field vs. wave
We often hear that the electromagnetic wave "consists" of real photons while the electromagnetic field "consists" of virtual photons. Granted "virtual" means these particles don't exist other than as ...
- 12.7k
3
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189
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Only electron in the universe, does it produce magnetic field?
Imagine there is only 1 matter in the universe, a free electron. we can't tell if it is moving or not so does it produce magnetic field? I know it has an intrinsic spin but it is just a quantum value ...
- 13k
5
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When an electron orbits in a magnetic field, how exactly does its spin precess?
In the case of a cyclotron, with a constant magnetic field $B$ in the vertical direction, a moving electron circles in a horizontal orbit.
The cyclotron frequency is $\omega = eB/m$.
At the same ...
- 73
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367
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Which side of a silver atom is "north" and which is "south"?
From what little I've learned about quantum mechanics, I understand that atoms with electrons whose spins don't cancel each other out act like tiny magnets. I assume this means these atoms, like ...
- 163
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Why is there an emf induced across the width of a metal sheet when it is moved across a uniform magnetic field?
By Faraday's law, the flux is constant, so there will be no emf. But each electron in the metal sheet is moved at some speed, so it will experience a force, and as a result, electrons will accumulate ...
- 254
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23
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Why does linear motion not affect the reading on a hall probe?
Moving the hall probe forward at velocity v would make all the electrons in it propel at velocity v, so the magnetic force on each electron (qV x B ) would increase. If so, unless there's some fuzzy ...
- 254
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Work done by magnetic force
By Lorentz force law, $F_m$ is always perpendicular to velocity of charge $v$. But $F_m$ is not necessarily perpendicular to the displacement of charge caused by $F_m$ .
Then how can we say that ...
5
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Can relativity explain the magnetic attraction between two parallel electrons or electron beams comoving in a vacuum? (No wires)
How can relativity explain the magnetic attraction of two electrons (or two electron beams) comoving in a vacuum at some certain constant velocity?
It is well known (https://acceleratorinstitute.web....
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Diagonal squeezing of an electron beam by a pair of bar magnets
While coordinating an introductory physics lab on the Lorentz force, I came across a behavior which I hadn't seen before and for which I didn't have a ready explanation. The experiment consisted of ...
- 125
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$N=1$ and $N=2$ supersymmetry for non-relativistic electrons
I have been following Fred Cooper's Supersymmetry in Quantum Mechanics and I am currently on pages 63/64 where I have now derived the Pauli-Hamiltonian for a non-relativistic electron in an external ...
- 205
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Why are materials magnetic?
I have trouble understanding why some materials are magnetic. What I know so far, is that electrons are the main reason. Every single electron has a magnetic moment, which is defined as the torque it ...
- 357
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Is there scientific work about the inner structure of the electron and its magnetic and electric fields?
Since the electron posseses permanently an electric and a magnetic field to search for a model of the constituents of this inner structure and the two fields should be good scientific area of research....
- 10.6k