All Questions
Tagged with magnetic-fields electrons
106
questions
7
votes
1
answer
333
views
If electrons are magnets do they attract each other?
It is said every electron is negatively charged and so they repel each other but if electrons are tiny magnets(which are responsible for atomic attraction and how solid magnet works) does it mean ...
- 241
7
votes
0
answers
78
views
Should electrons as tiny magnets, stick to a permanent magnet if in appropriate conditions?
Should electrons as tiny magnets, stick to a permanent magnet if in appropriate conditions? Why shouldn't the magnet collect them like tiny iron dust?I know they repeal each other but should a certain ...
- 1,815
6
votes
3
answers
28k
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Manganese has more unpaired electrons than Iron so why is Iron ferromagnetic Manganese paramagnetic?
Manganese has five unpaired electrons, but Iron has four, then why is Iron ferromagnetic and Manganese paramagnetic?
What's that property I'm missing?
- 93
5
votes
2
answers
2k
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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....
- 65
5
votes
2
answers
3k
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Is Magnetism and Electromagnetism the Same Thing?
I keep hearing everywhere that magnetism and electromagnetism are different but is seems to me that when a current is moving and it creates a "magnetic field", it is just electrons repulsing other ...
- 153
5
votes
3
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2k
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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
4
votes
1
answer
198
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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
4
votes
1
answer
198
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Why is the magnetic field dependent on the current inside the Amperian Loop?
I visited this website simulating the magnetic field inside and around a pipe. I understand that there is no current flowing at the center of the pipe, thus there is no magnetic field generated ...
- 155
4
votes
2
answers
404
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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
4
votes
1
answer
1k
views
Electron traveling through gravitational and magnetic field
When an electron travels through a magnetic field it experiences the Lorentz force. The force acting on the electron causes an acceleration and therefore Cyclotron radiation is emitted. After reading ...
- 652
4
votes
3
answers
2k
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The motion of an electron accelerating in a uniform magnetic field
As far as I know, when electrons travel perpendicular to a uniform magnetic field, the Lorentz force makes the electron undergo circular motion. As this electron undergoes circular motion, it emits EM ...
- 471
4
votes
1
answer
1k
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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
4
votes
1
answer
186
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Prove that Laughlin's 3-electron states are a complete set of states
In R. B. Laughlin's 1983 Physical Review B article, Quantized motion of three two-dimensional electrons in a strong magnetic field, Laughlin separates out the center of mass motion of the electrons, ...
- 1,356
3
votes
2
answers
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
3
votes
1
answer
546
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Can the classical action for an electron in constant magnetic field be periodically infinity for different values of time?
In Feynman's book, 'Quantum Mechanincs and Path integral', the following problem is given (page no. 64):
Now, we know that $Kernel\propto e^{iS_{cl}/h}$ if $S$ is quadratic. Here, $S_{cl}$ refers to ...
- 2,326