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Oct
31
comment Magnetic monopole bound state
I think you're being pedantic by discussing duality transformations. There is no actual ambiguity in what we call "electricity" and "magnetism", because there is a universally-accepted convention that resolves the ambiguity. Every physicist agrees: Electrons have an electric charge, and my refrigerator has magnets on it, not the other way around.
Oct
29
comment Polarization of Light Without Reducing Intensity
I don't get that paper. If the two polarizations get sent to the same direction, then it violates thermodynamics and the paper is wrong. If they get sent to different directions, why not just use a beamsplitter cube and a half-wave-plate and some mirrors to accomplish the same thing with >99% efficiency? I don't see a clear discussion of this in the paper.
Oct
20
awarded  Popular Question
Oct
16
comment Non-uniqueness of the k-vector in Bloch state
I made a wikipedia image on this topic: commons.wikimedia.org/wiki/File:BlochWaves1D.svg See the caption too. Does that help? If not, what's confusing about it?
Oct
9
comment Polarization of Light Without Reducing Intensity
If you combine a horizontally and vertically polarized beam using a beamsplitter, you can with linear polarization, or circular ... or unpolarized! How do you propose to avoid winding up in the same unpolarized situation you started in?
Oct
5
answered What direction does the evanescent wave point?
Oct
2
answered Where is the fallacy in this issue related to electric charge quantization?
Oct
2
comment Polarization of Light Without Reducing Intensity
Yes, that's exactly right!
Oct
2
revised Polarization of Light Without Reducing Intensity
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Oct
2
answered Polarization of Light Without Reducing Intensity
Sep
29
comment Do photons emitted from a LED show bunching?
Yes, if you have a giant LED but you ONLY look at the 0.1% of photons that are coming out from a particular part of the chip and/or coming out in a particular direction ... then that subset of the photons can have bunching or anti-bunching.
Sep
29
answered Do photons emitted from a LED show bunching?
Sep
21
answered at $T \approx 0 \, \text{K}$, will all energy levels within the electronic band structure be occupied up to a certain level?
Sep
17
comment How does DC current work in Cathodic Protection?
I would say that the important thing is the DC voltage, not the DC current. The voltage prevents corrosion, the current is an inevitable side effect of applying a voltage.
Sep
13
comment What is the pressure of a charged gas?
@BlackbodyBlacklight - The "novelty glass globes filled with fluorescent plasma" is not an example. Even if it were completely ionized, it would be a mixture of positive and negative ions.
Sep
11
comment Order of magnitude for the range of vision
I don't understand "eye can't reach". We can easily see stars trillions of miles away.
Sep
10
revised What is the pressure of a charged gas?
deleted 28 characters in body
Sep
10
answered What is the pressure of a charged gas?
Sep
8
revised Perpetual motion machine of the second kind possible in nano technology?
added 2639 characters in body
Sep
4
comment Silicon parabolic dispersion for X minima
"Assuming the six equivalent bands are ... spherical" ... but they aren't. The energy rises more sharply in some directions than others.