17,535 reputation
34272
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location Princeton, NJ
age 25
visits member for 1 year, 11 months
seen 29 mins ago

I am a graduate student studying astrophysics at Princeton. I received my bachelor's in physics and mathematics from Caltech (2011).


1h
revised Is it possible to produce images of pair production in home-made cloud chamber?
edited tags
2h
comment Thoughts on the ice cube from orbit problem
@parceval John's calculations assume an equilibrium of sorts, and deals only with thermodynamics. A large enough meteor will hit the ground long before thermally equilibrating, and (for km-sized objects and above) even before a sound wave can cross from the front of the object to the back, and so kinetics becomes more important.
17h
comment Why do I hear the telephone ring through grandpa’s hearing aid before the actual phone rings?
Many hearing aids link to devices like phones and TVs through e.g. Bluetooth...
20h
comment Open problems in string theory
As with any topic, there is a PhD thesis for you if and only if there is an adviser willing to take you on as a student in that topic. Open questions are irrelevant if no one in your university will mentor you in them, and questions that aren't famous make perfectly for perfectly good research under the right tutelage.
20h
comment How many of the 230 crystallographic groups are realized in nature?
PCC2 (mentioned by akhmeteli as not being observed as of 1999) is not in the dropdown menu. Also "The list box does not contain all possible space groups, but only those represented in the database." Interpret that how you will.
1d
comment Jumping sewer lid - WHY?
Bernoulli might be at work here, but not with respect to airplanes.
1d
comment If wavefunction is just a probability function, how does an electron interfere with itself
Interference can be viewed as otherwise unexpected ripples in the probability distribution, and it it directly caused by the fact that there are underlying complex amplitudes being added together before squaring. If all we had was the probability distribution, there would be no interference.
1d
answered If wavefunction is just a probability function, how does an electron interfere with itself
1d
comment Is topology of universe observable?
There is a real risk of applying a double standard here with regard to the ontological definitions you choose. There is at least one natural definition of "geometry" for which it most certainly can be observed, and there is another definition for which it cannot. The same dichotomy holds for "topology." Would constructing a non-contractible worldsheet count as proving a topological statement about the universe? It depends if you allow one to write the laws of physics in an equivalent (but seldom used) way that makes no reference to standard topological notions.
2d
reviewed Reject suggested edit on Double slit experiment and single particles. Is the wave function just a mathematical model?
2d
answered Metric tensor in special and general relativity
Jul
18
comment How are the distances to the most distant $\gamma$-ray bursts measured?
@Kyle then retracted, but perhaps the question should give some hint that photo-z's were involved? Maybe with some quote from the article?
Jul
18
comment How are the distances to the most distant $\gamma$-ray bursts measured?
@Kyle but what about the one I linked? Also, if the OP didn't just want GRB's, there's physics.stackexchange.com/questions/70400/… for radio.
Jul
18
comment How are the distances to the most distant $\gamma$-ray bursts measured?
possible duplicate of How is the distance to a $\gamma \mathrm{-ray}$ burst (GRB) measured in just a few days?
Jul
18
reviewed Leave Open How Does Mass Leave the Body When you Lose Weight?
Jul
18
comment How has the age of the Universe been derived from the observations made by the Planck mission?
Worth pointing out that, despite the press coverage, nothing Planck did was new - it had all been done a decade earlier, using the exact same technique.
Jul
18
comment Hot water freezing faster than cold water
That's Zhang article is incredibly sketchy "science."
Jul
18
revised How are the distances to the most distant $\gamma$-ray bursts measured?
edited tags
Jul
18
revised How would an earth-spanning ring around the equator behave?
edited tags
Jul
17
revised How to properly construct the electromagnetic tensor in curved space-time? (Part II)
images -> latex