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Sep
10
reviewed Approve suggested edit on ${1 \over T} e^{-i/T}$ for Boltzmann-Gibbs distribution
Sep
7
reviewed Approve suggested edit on Why the amount of entropy increase to a system is less when heat is added to a higher temperature system than to a lower one?
Sep
6
reviewed Approve suggested edit on Finding the current in a parallel circuit
Sep
6
reviewed Approve suggested edit on Do photons change velocity instantaneously?
Sep
3
awarded  Popular Question
Sep
3
comment Dark matter a medium for light propagation
@anna v, yes, ridiculous that you have too much pride for scientific and pedagogic honesty. I can quote from Jackson or Landau all day: "one should properly speak of the electromagnetic field Fuv rather than E or B separately." The electromagnetic field is absolutely mandatory given relativity, and has nothing to do with QFT. That said, it is completely specious to say that QFT is not "necessary" for answering the question. There are no "classical" qualifications made here. The question is about nature, and if QFT tells us something relevant about nature then so be it.
Sep
3
reviewed Approve suggested edit on Has the collapse of wave function due to observation been recorded?
Sep
3
reviewed Approve suggested edit on Magnet spinning between two other magnets
Sep
2
comment Dark matter a medium for light propagation
@anna v, they don't need a source, are you aware of electromagnetic radiation? Do you know the definition of "field" when you say "electric field" and "magnetic field"? Of course these guys are frame dependent which is why one should even classically talk about the 4-potential and the EM-field rather than its frame-dependent components. This is stuff you should know, which is way this discussion is bizarre. Are you really trying to argue that "electromagnetic field" is a non-classical concept?
Sep
2
comment Dark matter a medium for light propagation
@anna v, you are being stubborn and specious to no positive end. Even classically the EM field is a field, and fills all space by definition of "field," regardless of whether it has zero amplitude.
Sep
1
comment Dark matter a medium for light propagation
@anna v, classical fields are not the background of the question. The question is about nature generically, which we know is not classical.
Sep
1
comment Dark matter a medium for light propagation
Yes, and light is understood to be ripples in the EM field that permeates all of space. It is of course a Lorentz invariant field in accord with the Michelson Morley experiment.
Sep
1
comment Dark matter a medium for light propagation
@anna v, that is completely wrong, as you should know, by definition of field, by any knowledge of the Standard Model, and by experimental fact of vacuum polarization, casimir effect, etc.
Sep
1
comment Dark matter a medium for light propagation
"Water waves are in water, sound waves are in air, therefore there must be something in which light propagates." ... There is something in which light propagates: the electromagnetic field. It just happens to be a field that is Lorentz invariant.
Aug
28
comment How literally should you take “The Higgs boson gives other particles mass”?
@Per Arve, the question is not asking about electroweak symmetry breaking specifically, it is about how the Higgs field "gives" particles mass. I'm well aware of the role of the Higgs mechanism in EW symmetry breaking; that aspect of the Higgs mechanism is factorized out of my question, and belongs as an answer to a different question.
Aug
27
reviewed Edit suggested edit on A force opposing Gravity
Aug
27
revised A force opposing Gravity
Error fixed.
Aug
22
reviewed Approve suggested edit on Thermodynamics for Dummies: Entropy and temperature
Aug
21
reviewed Approve suggested edit on Alternate method of transmitting wireless electricity?
Aug
20
reviewed Approve suggested edit on Spherical charge distribution along a wire of length $L$ in which its center coincides with the origin of the system