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Dec
24
answered Does it matter which blanket I take below and which one above when I cover myself with the two?
Dec
23
answered On the foundations of quantum physics
Dec
23
revised Difference between spin and polarization of a photon
addition after comment
Dec
23
revised Difference between spin and polarization of a photon
corrected link
Dec
23
answered Difference between spin and polarization of a photon
Dec
23
comment How much of theoretical physics research involves contemplation and reflection?
I think you are giving the worst side of the issue. A student with aptitude and desire to do theoretical physics even if is later discouraged by the competition and job prospects as you describe them is still much better off and can turn to a lot of other directions for making money, similar to what an engineer can do. If though only trained as engineer, he/she cannot turn into a theoretical physicist track.
Dec
22
awarded  Revival
Dec
22
answered Why is QM maximally predictive?
Dec
21
comment What was the entropy of the universe at the time of the Big Bang?
@MBN en.wikipedia.org/wiki/… " 1>a situation where matter is forced to be compressed to a point (a space-like singularity)"
Dec
21
comment What was the entropy of the universe at the time of the Big Bang?
@MBN hypersurfaces are not part of the microstates defining temperature, one needs "particles" in space and time. As I said it is my comfort blanket in this area.
Dec
21
answered What was the entropy of the universe at the time of the Big Bang?
Dec
21
comment The status of the BICEP2 'discovery' after Planck 2014
@CuriousOne I agree to that last, though I do wonder how irreducible can a background drawn by rough strokes can be.
Dec
21
answered Is there a material that could “convert” near infrared frequency to infrared?
Dec
21
comment Is there a material that could “convert” near infrared frequency to infrared?
You realize of course that any absorptive material will do that through black body radiation but it will be a dispersed spectrum? You want a coherent beam out of this, or at least a beam? rp-photonics.com/frequency_doubling.html for doubling frequency exists, not for halving though .
Dec
21
comment The status of the BICEP2 'discovery' after Planck 2014
@CuriousOne they were sitting on the data for some time. If you look at the Planck analysis it is even worse, it fits polarization on large temperature maps whereas if you look at the experimental setup of BICEP2 it is very elegant measuring tiny temperature differences in small detectors.
Dec
20
answered The status of the BICEP2 'discovery' after Planck 2014
Dec
20
comment The status of the BICEP2 'discovery' after Planck 2014
I check for news every now and then : bicepkeck.org/#papers
Dec
20
comment The status of the BICEP2 'discovery' after Planck 2014
@CuriousOne I read it up at the time. It is a different experimental method than the Planck. At the time Planck was giving limits with large errors. Their experiment did measure polarization with five sigma from zero, not limits. The lensing they avoided by choosing the a one degree window and dust was corrected by using Planck published data at the time. After the new results they were supposed to come out with a common paper with Planck by the end of November but no sign of it yet. Disagreement?
Dec
20
comment The status of the BICEP2 'discovery' after Planck 2014
In their publication already part of the signal had been subtracted to account for the dust.
Dec
20
comment Is nature quantized?
in fact it is "because" the black bodies studied experimentally were composed of particles(molecules) in rotational and vibrational levels in the lattice that the model of quantized harmonic oscillators works so well.