All Questions
106
questions
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How could I calculate the strength of an electromagnetic field sufficient enough to generate plasma in low pressure argon gas?
For context, I wish to create a plasma toroid in a glass sphere of 25 Torr Argon gas like in the photo below; there are multiple examples of how to do this online using a class E oscillator ...
- 1
3
votes
2
answers
134
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Maximum energy emitted by quantum particle in infinite potential well
I've come across an interesting problem in QM which I can easily solve using classical radiation theory, but I can't seem to grasp how this theory extends to the quantum realm. The problem statement ...
- 1,616
1
vote
2
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143
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Analogy between the Electromagnetic Field and the Schrodinger Equation
In this answer my2cts says "The electromagnetic field is to photons what the Schrödinger or Klein-Gordon wave function is to electrons." Could someone expand on this further? Is this just a ...
- 126
10
votes
1
answer
740
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On a tinted (reflective) window, why do I need to look from up close to see inside?
I've noticed that on a really tinted window, when looking from farther (and even pretty close just not touching the window), you cannot look inside, but when you put your head so close to the window, ...
- 29k
1
vote
1
answer
71
views
What happens when a photon interacts with a free electron?
When an electromagnetic wave interacts with a free electron the electron starts to oscillate in the direction perpendicular to the propagation of the wave meanwhile when a photon interacts with a free ...
- 866
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1
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59
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Standing Waves are formed by an Electromagnetic radiation inside a cavity
While seeing the derivations of the Rayleigh Jeans law and the Planck's Law for a Blackbody Radiation, I came across a fact that they assumed that Electromagnetic Radiation inside a cavity would form ...
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votes
0
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26
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How does a photon interact with EM field of a nucleus thus exchange momentum and recoil the nucleus when pair production happens? [duplicate]
The photon must be near a nucleus in order to satisfy conservation of momentum, as an electron–positron pair produced in free space cannot satisfy conservation of both energy and momentum.[4] Because ...
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2
votes
2
answers
76
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What is the interplay between radiation and photon creation?
While trying to provide an answer to this question, a question popped into my mind. When a charge accelerates, is there always a photon associated with that radiation, or multiple photons? For ...
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37
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If light is made up of electromagnetic waves, then if I put a magnetic close to a laser beam, shouldn't the light bend? [duplicate]
Light always moves in a straight line unless gravity acts on it strongly, but since it is made of electric and magnetic waves, shouldn't it be pulled towards different charges and magnetic, or is ...
- 351
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votes
0
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66
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Can electron remain still?
Imagine we have a hollow metallic toroid, with copper wire winded around it, which carries electric current. That implies we have magnetic field inside the hollow toroid. The toroid has vacuum inside. ...
0
votes
1
answer
31
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How is the radiative damping different for a uniform lattice of atoms?
In page 343 of Loudon's The Quantum Theory of Light, he states that scattering of light from a uniform spatial distribution of atoms is inhibited, and radiative damping must vanish as a result.
What ...
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2
votes
1
answer
81
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Why can a beam of electron and not scatter with a proton to form a H atom? [duplicate]
*Consider aimimg a beam of free electrons towards an isolated free proton . When they scatter, an electron and a protons cannot combine
to produce a H-atom because
A) Energy Conservation B)without ...
-1
votes
3
answers
192
views
If electromagnetic waves do not need any medium, then why communication under water is hard or why light does not pass through wall?
If electromagnetic waves do not need any medium, then why communication under water is hard, or why light does not pass through wall?
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1
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111
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Does light attract charge? [duplicate]
Light is an electromagnetic wave, with an electromagnetic field. Does it attract/repel charge?
2
votes
1
answer
413
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Can Stern-Gerlach spin alignment be seen as a result of EM radiation of precessing magnetic dipole?
Stern-Gerlach experiment is often seen as idealization of measurement. Using strong magnetic field, it makes magnetic dipoles (of e.g. atoms) align in parallel or anti-parallel way. Additionally, ...
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