All Questions
Tagged with magnetic-fields electrons
106
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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?
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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 ...
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Does electron moving in a circular motion inside a magnetic field experience acceleration? [closed]
I always thought that object turning means acceleration but what if an electron is caught inside a magnetic field that simply changes it path into a circular one so no electric field is allowed. The ...
- 13k
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Electron Orbit at the Null Point (DC sputter coating)
This situation pertains to 'thin film sputter coating.'
Suppose I have some magnets in between a high voltage anode and cathode in a suitable vacuum. I understand that the electrons get trapped in the ...
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Units of Pauli spin magnetization and Fermi energy of free electron gas
I cannot get the correct units for the magnetic susceptibility and the Fermi energy for a free electron gas!
According to "Introduction to Solid State Physics", 8th edition by Charles Kittel,...
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Do electron spin retain its up/down direction over time?
When high speed electrons are passed through non-homogeneous magnetic field, 50% of the electron will be deflected up, and the rest 50% will be deflected down (Stern Gerlach experiment).
Suppose the ...
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The magnetic dipole moment of electrons is not conserved?
The electron has a constant value of its magnetic dipole NIST. How then is "Magnetic dipole moments are neither conserved nor quantized" to be understood?
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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 ...
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Magnetic field by a electron
In an atom there are $n$ electrons and the $n$th electron creates a magnetic field, as it has velocity and the other $n-1$ electrons will be affected by this force. But still, why aren't we ...
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Is a moving electret considered a current, and would spinning one make a magnet?
If I establish a permanent electric charge on some volume of material (as in an electret) and then move that material through space — is that motion equivalent to a current in a wire?
Also, since a ...
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Anisotropic screened Coulomb interaction for particles in a plasma
Background (isotropic screening): Consider a quasi neutral plasma. An ion/electron in a dense plasma attracts opposite-charged particles and repels
those with the same charge, thereby creating a "...
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Electron in varying magnetic field
Lets consider an electron that is placed in an existing, constant in space near the electron, magnetic field. Electron is stationary. Magnetic field over time gradually reduces to zero.
I assume ...
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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 ...
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169
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High speed electron and magnetic field
We know that when an electron moves at a velocity,it produces magnetic field.
My question is how strong the magnetic field will be if electron moves at a velocity $v$ or with an acceleration $a$ and ...
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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 ...
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Is hydrogen atom with a single unpaired electron diamagnetic?
I know that paramagnetism is caused because of the net magnetic dipole moment of an atom with unpaired electrons. On the other hand, all substances exhibit diamagnetism, but the effect is weak and ...
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Would somebody feel a magnetic field if they are travelling at the same velocity as a charge?
I am little bit curious about how magnetic fields are being generated when a charge moves.
I want to check if somebody travelling along with a charged particle, would that person experience a magnetic ...
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Should electrons from the silk handkerchief align their spins when we put close a permanent magnet?
Should electrons from the silk handkerchief align their spins when we put close a permanent magnet? So to produce an extra magnetic field that will add up to the field of the magnet?
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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 ...
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What is the atomic explanation for why some materials cannot be magnetized? [duplicate]
I have heard many variations on the explanation for why certain materials like iron can be magnetized by being stroked with a magnet, but I haven't yet found any source directly explaining why some ...
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4
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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, ...
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135
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If a magnet was in a cuboid shape, would a magnetically attractive/repulsive force only be emanating from 2 of the 6 sides?
I know this is a really simplistic question, but I just want to check my assumption. Say you had a cuboid-shaped, permanent magnet, with the north pole on the side facing to the right, and the south ...
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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 ...
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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 ...
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Direction of magnetic field in cathode ray tube experiment
In the diagram above, the S pole is pointing towards the cathode ray tube, and the magnetic field is coming out of the page causing the cathode rays to deflect upwards.
My question is, if it wasn't ...
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Is there any difference in the the electric field of a proton and an electron?
The question which I was wondering about was that how does a positive charged particle know that the other particle is positively or negatively charged? Then I thought that maybe there is some ...
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How do magnetic fields due to random motions of charges cancel out in a current-carrying wire?
In my physics textbook, it states that
magnetic fields due to random motions of charges cancel out at every point
I know there's a drift velocity due to force imposed by the electric field, but the ...
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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 ...
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What is electron precipitation?
I'm completing a dissertation project and the only source which explains what electron precipitation actually is is linked here, from the wikipedia sources. However, when investigating the sources ...
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Why is the spectrometer so big in KATRIN experiment?
I've been studying KATRIN experiment for a popularizing science project and I was wondering, why is the spectrometer so big ? I mean the thing is so huge that they had to carry it over 8000km on the ...
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