Linked Questions

6 votes
2 answers
5k views

How virtual photons give rise to electric and/or magnetic field? [duplicate]

Say a neutron which have magnetic moment despite carrying no charge. Isn't both the electric field and magnetic field consist of virtual photons? So how can the same virtual photons give rise to 2 ...
user6760's user avatar
  • 13k
5 votes
1 answer
908 views

Electromagnetic Field VS Photons [duplicate]

I am currently studying electrodynamics with all the fields and the like. Now, as I understand it, in a more modern viewpoint there is a duality between electromagnetic fields and photons, with ...
Pascal Engeler's user avatar
1 vote
2 answers
182 views

How is electric field arising from photons? [duplicate]

This question has nothing in common with the question it is proposed to be duplicate e.g about virtual photons. The question is about a real radiation field where is known that no virtual photons ...
Mercury's user avatar
  • 581
0 votes
1 answer
60 views

Is the quantum analogue of electrostatic field photon? What will be its wavelength then? [duplicate]

When two charges are separated there is an electrostatic field between two. Quantum mechanically, is it actually the discrete energy packet or photons that's travelling from one charge to another? If ...
Kritika's user avatar
  • 165
26 votes
11 answers
12k views

How does Zumberge's 1981 gravitational measurements relate to gravitational waves?

Gravitational waves were discovered 35 years ago without fanfare in 1981/2 by Zumberge, R L Rinker and J E Faller, then completely ignored. See: "A Portable Apparatus for Absolute Measurements of ...
Sandgroper's user avatar
11 votes
2 answers
8k views

Do permanent magnets emit virtual photons?

Is the magnetic field propagated by photons or by virtual photons? If it is by photons, then doesn't that mean that magnets lose energy and eventually become non magnets?
Rahul's user avatar
  • 113
4 votes
4 answers
3k views

Difference between electromagnetic radiation (EMR) and Electromagnetic Field?

I'm a freshly graduated electrical engineer. One course that I really struggled with was Field Theory, because it was a lovely assortment of vector calculus and things that were explained to me well ...
BB ON's user avatar
  • 264
4 votes
4 answers
4k views

What causes like electric charges to repel and opposite electric charges to attract at the smallest level?

When talking about charged particles, the law of charge dictates that two particles with opposite charge will attract each other and two particles with the same charge will repel each other. However,...
GracefulLemming's user avatar
3 votes
3 answers
602 views

Which elementary particles are behind magnetic field, similar as photons behind radio waves?

I see, there are photons behind radio waves. As Wave–particle duality said: the radio waves are waves and at the same time are fluxes of particles called Photons. I'm wondering, what is behind ...
einstein's user avatar
1 vote
3 answers
1k views

Are EM fields made of photons or are they fundamental?

I have read these questions: Virtual photon description of B and E fields How do virtual photon cloud produce discrete magnetic field lines in bar magnet? How virtual photons give rise to electric ...
Árpád Szendrei's user avatar
3 votes
2 answers
2k views

Propagation of the photon

The propagation of the electromagnetic wave from a dipole-antenna is well described. The changing electric field creates a changing magnetic field, which creates a magnetic field and so on... the ...
redbaron's user avatar
2 votes
4 answers
1k views

Is it possible to create a beam of light with frequency of 0?

Is it possible to create a beam of light with frequency of 0? So this would involve photon(s) that move forward without fluctuating with any frequency. If yes, how could this be done? Also, ...
user avatar
0 votes
3 answers
1k views

How bosons do not violate conservation of energy?

As far as I understand bosons are energy packets which carry forces: e.g. Higgs bosons carry gravity. What I don't understand is, for example if we have an isolated object which constantly releases ...
inf3rno's user avatar
  • 1,069
7 votes
1 answer
721 views

Quantum Electrodynamics

I was wondering if anyone could give a simple explanation of how light interacts with matter. From what I have read in QED, electrons will repel each other because of their ability to emit and ...
chase's user avatar
  • 175
3 votes
1 answer
1k views

Alternative methods to derive the static potential in the NR limit of QED

In QED, one can relate the two-particle scattering amplitude to a static potential in the non-relativistic limit using the Born approximation. E.g. in Peskin and Schroeder pg. 125, the tree-level ...
Sam Ridgway's user avatar

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