17,590 reputation
34272
bio website
location Princeton, NJ
age 25
visits member for 2 years
seen 2 hours ago

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


Jul
9
reviewed Leave Closed Question about an integration by parts in Feynman's Quantum Mechanics
Jul
8
comment Will a tall narrow cup keep a cup coffee warmer than a more evenly dimensioned cup?
I suspect there are far more egregious approximations I've made (like doing everything in my power to avoid convection) than ignoring radiative cooling.
Jul
8
comment Why does a flat universe imply an infinite universe?
@Void A Snake fan? I always thought of tori in terms of Asteroids myself :)
Jul
8
awarded  Nice Answer
Jul
8
awarded  Nice Answer
Jul
8
comment Do alternate theories for Dark Matter (like MOND) explain it's effect on gravitational lensing?
I'm personally convinced of dark matter mostly because of cosmology and the CMB, partially because of lensing, and essentially not at all because of rotation curves, and I don't think my position is too uncommon throughout astrophysics.
Jul
8
revised Why do we deal only with large scale magnetic fields in astrophysics, and not electric fields?
added 12 characters in body
Jul
8
answered Why do we deal only with large scale magnetic fields in astrophysics, and not electric fields?
Jul
8
answered Will a tall narrow cup keep a cup coffee warmer than a more evenly dimensioned cup?
Jul
8
comment Classic home experiments for an 8-year-old child
Unfortunately it seems you've gotten a very long list of demonstrations, but very few pedagogically-minded ones that emphasize qualitative conclusion-drawing. On the bright side, at age 8 I was still struggling to write my name; your daughter's curriculum is about 6 years ahead of the one I grew up in.
Jul
7
comment Doughnut magnet
possible duplicate of What happens to the magnetic field in this case?
Jul
7
comment English translation of Heisenberg's paper ``Über den anschaulichen Inhalt der quantentheoretischen Kinematik und Mechanik''
@NikolajK To be fair, Google translate itself said "intuitive" rather than "actual" but I only searched Scholar on the phrase "quantum theoretical kinematics and mechanics," since my ability to verify German is limited to cognates.
Jul
7
answered English translation of Heisenberg's paper ``Über den anschaulichen Inhalt der quantentheoretischen Kinematik und Mechanik''
Jul
7
reviewed Reopen Frequency-averaged (gray) radiative transfer
Jul
7
comment Basic question on the Aharonov-Bohm effect
Can I suggest $U = \mathbb{R} \times (\mathbb{R}^2 \setminus \{0\})$, to make the operator precedence clearer? Otherwise it almost looks like you are contradicting yourself.
Jul
7
comment What is the percentage of stars that are massive enough to end their lives in a supernova?
@AbanobEbrahim I think I figured it out - see the last section.
Jul
7
revised What is the percentage of stars that are massive enough to end their lives in a supernova?
added clarification on differnces between mass functions
Jul
7
comment What is the percentage of stars that are massive enough to end their lives in a supernova?
I'm getting that such stars are about 1000 times rarer than that figure suggests. It could be that I made some silly arithmetic error. If anyone sees where I went wrong...
Jul
6
answered What is the percentage of stars that are massive enough to end their lives in a supernova?
Jul
5
comment Levi Civita covariance and contravariance
I think the most common trend in the literature I see is for the lower-indexed symbol defined with signs given by the parity of the index permutation in the normal way, while the upper-indexed symbol differs from the lower-indexed one by $\mathrm{sgn}(\det g)$. But the OP seems to be in Euclidean $\mathbb{R}^3$ anyway.