All Questions
Tagged with magnetic-fields electrons
26
questions with no upvoted or accepted answers
7
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0
answers
78
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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
2
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43
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Eigenstates in a 2D metal disk with finite-size perpendicular magnetic field (Piece-wise Gauge)
Let's have a two-dimensional metal disk with radius R, and now I apply a uniform magnetic field B perpendicular to the disk, within the concentric part of the disk with radius r $\lt$ R. How can we ...
- 21
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40
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How would I calculate the minimum and maximum wavelength of the Bremsstrahlung released by an electron as it goes through a magnetic field?
Say, I have an electron gun and ground below it (with a potential difference of U) and two coils side by side between them producing a relatively homogenous magnetic field B. If I shoot an electron ...
- 11
1
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19
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Qualitatively, how would you model the electron in a Penning trap quantum mechanically?
I know there are articles that give a full treatment of the math, but I'm more interested in the concept. I get that, in the classical picture, we are measuring the oscillation frequency of the ...
- 2,475
1
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4
answers
123
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Electrons, magnetism and electromagnetic waves
I know that moving charge (such as electrons moving around nuclei) produces a magnetic field. I also know that moving charge (again, such as electrons in atoms) can produce electromagnetic waves, ...
- 115
1
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136
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Why and how exactly do spinning electrons create a magnetic field?
I have just been told that if you had a spinning electron completely isolated, even that one electron would have a magnetic north and south pole. I have also been told that all metals have spinning ...
- 115
1
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0
answers
22
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Electrons crossection distribution inside a direct current wire
If electrons of a DC flow feel mutual magnetic field that should move them towards the center of the wire and in that case their accumulation in the center cause electric repulsion should there be a ...
- 2,255
1
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0
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415
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How do magnetic dipoles align with external magnetic fields?
Based on the equation for energy of a magnetic dipole in an external field:
$$E=-\mu \cdot B$$ I would have thought that the system would minimise its potential energy and so the $\mu $ will be ...
- 1,525
1
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50
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What is the formula for the wavelength of radiation produced by non-relativistic electrons travelling through an undulator?
Is it simply equal to the length of the undulator periods? Or does it depend on the electrons' velocity and the strength of the magnetic field? Thanks.
- 421
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36
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How can we be using the orbital model to calculate such microscale phenomena as Zeeman effect?
Surely it begs for a quantum-mechanical description?
Thank you.
- 63
1
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0
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119
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What's the equation for the magnetic field created by a single moving electron?
Suppose we have an electron moving in a straight line with velocity $v$. My question is: What is the equation that describes the magnetic field generated by this movement. I'm unsure how to proceed ...
- 189
0
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1
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35
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Internally, what defines whether a material is magnetically hard or soft?
I know that magnetically hard materials hold magnetic fields (magnetic moment alignment) for longer, while soft metals do not. However, what, internally, causes these properties to arise?
- 185
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2
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55
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Why does a moving charge experience force with a bar magent unlike getting attracted or repelling to it like two bar magnets would do?
i wanted to know why does a moving charge and bar magnet not experience force similar to how two bar magnets experience since they both have magnetic fields. In bar magnets they attract or repel but ...
0
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0
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43
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Force on current carrying wire due to moving charges
Consider a situation where an electron traveling at a very high velocity enters in a magnetic region created by a current carrying wire.
This means a force will act on the electron and it will deflect ...
0
votes
1
answer
104
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Relationship between the magnetic dipole of the electron and the polarisation of its radiation
When passing through a magnetic field, electrons are deflected sideways. This is the basis of the Lorentz force and all Hall effects. If this is done on a larger scale in particle accelerators or, in ...
- 10.6k