All Questions
106
questions
2
votes
1
answer
54
views
Is energy contained in/transferred by light really discrete or is it continuous? [duplicate]
I don't really understand the wave-particle duality of light.I don't really understand the idea of photon, The idea of photon that is generally taught is that it is a fundamental unit of light with ...
- 21
0
votes
1
answer
84
views
Photon propagation paradox, what am I missing? [closed]
I've seen photons and EM waves be described like so "Electromagnetic waves can be imagined as a self-propagating transverse oscillating wave of electric and magnetic fields."
So if we have a ...
- 115
1
vote
2
answers
143
views
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
0
votes
2
answers
87
views
Photons don't wiggle perpendicular to their direction of travel do they?
Every 3D visual explaining a photon shows the photon moving through space (let's say on Z axis), with electric component wiggling up and down on the Y axis, and magnetic component wiggling left and ...
- 123
1
vote
1
answer
77
views
Photon emission rate frequency dependency
I am puzzling over the dependence of the energy flux of electromagnetic radiation on the frequency of the source.
The power radiated in any direction or solid angle from a charged particle ...
- 1,030
2
votes
2
answers
1k
views
Does a running motor generate photons?
Since a motor consists of electric field generated through AC current and a fixed magnetic field (permanent magnets), does it generate photons?
0
votes
1
answer
55
views
How to calculate the change of the density of photons in different frames?
I have a problem in getting the transformation of the intensity of light.
1>> Using the transformation of the energy-momentum tensor $T^{ik}$, we can obtain
We have used the fact that $T^{00}=W$...
- 1
1
vote
2
answers
110
views
How do scientists focus high energy electromagnetic waves onto a target?
For visible light, we are able to use mirrors to focus on what we want.
However, gamma rays' wavelengths are too short and can't see solid objects.
So how do scientists focus high-energy ...
- 625
2
votes
5
answers
475
views
Is a photon a single wavelength of monochromatic light?
I am confused about all these different interpretations of what a photon is?
I am looking for a simple and practical interpretation.
Therefore, I am asking herein if a single photon corresponds to a ...
- 4,170
1
vote
1
answer
56
views
How do electromagnetic wave and photons wave function correspond? [duplicate]
Regarding two-slit experiment against photons makes me conclude, that both frequency and phase of electormagnetic wave and photon wavefunction coincide in space and time.
Am I right?
If I am right and ...
- 1,732
0
votes
0
answers
56
views
What does the electromagnetic wave of a photon do?
So for example in the double slit experiment, you can see the interference pattern on they screen of where the photons hit it. That makes sense to me. What doesn’t is that since in this simulation, if ...
- 103
1
vote
1
answer
71
views
Exotic types of polarization
I am aware that in the classical approximation of electromagnetic waves, waves can be linearly polarized (so that the B-field oscillates in one dimension as $B=B_0\cos(\omega t)$), circularly ...
- 366
-2
votes
1
answer
90
views
Light have mass? [duplicate]
So, I am a very very beginner at this physics stuff and I came across light being made of photons. Later, I started to think Light should have mass right?. Google said no. Also, doesn't something need ...
- 19
1
vote
0
answers
31
views
Integrating Planck's relation
By Planck relation, we know that an energy of a single photon is $E = hf$.
If we are given EM-waves with interval of frequency $f_1$ to $f_2$, does integrating from
$\int_{f1}^{f2} Edf$ $=\int_{f1}^{...
- 275
-1
votes
3
answers
213
views
Why electrons in an atom don't radiate photons?
Consider the $s$ orbital of an helium atom. The electron can be anywhere around (or even in) the nucleus. Electrons, like all charges, create electric fields. When the atom interacts with other atoms ...
- 793