21,448 reputation
44785
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location Princeton, NJ
age 25
visits member for 2 years, 4 months
seen 2 mins ago

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

My primary interest is in general relativistic magnetohydrodynamics simulations of black hole accretion.


1h
reviewed Close Is there uncertainity of luminosity of the perfectly homogenous body?
1h
reviewed Close Space Between Current universe and point of origin
1h
reviewed Leave Open Does screwdriver length matter?
1h
comment Does screwdriver length matter?
Welcome to Physics by the way!
1h
comment Does screwdriver length matter?
So in summary: There is no real difference, but a long screwdriver is often more ergonomic when held by a person.
14h
comment Are atoms made of protons, electrons and neutrinos?
Something to ponder: nuclei with too many protons are unstable to positron emission, wherein a proton "turns into" a neutron, a positron, and a neutrino. Do you see where this might lead to an infinite recursion of infinitely many particles if things really consisted of their decay products?
1d
comment SciFi Stasis Field and the Quantum Zeno Effect
The rate at which you need to measure a system can be enormous: physics.stackexchange.com/questions/33232/… Now someone needs to extrapolate to a macroscopic system and apply a little bit of quantum information theory.
1d
comment Temperature coefficient of resistivity (resistance) in function of temperature
Hi Mike Johnson, and welcome to Physics Stackexchange! In case you're not familiar with latex-style formatting, a basic intro can be found here. Far more thorough coverage is given here.
1d
revised Temperature coefficient of resistivity (resistance) in function of temperature
latex
1d
reviewed Close How can I mathematically proof an incoherent superposition of waves?
1d
reviewed Leave Open Is there a newtonian equivalent to Kerr black holes?
1d
comment Why does rotation simulate gravity if motion is relative?
Some historical background: Einstein was inspired by Mach's philosophy (which is not to say general relativity is necessarily 100% Machian), which in turn mirrored much of what Leibniz believed. Newton and Leibniz vehemently disagreed on a number of things (not just calculus), one of which is whether a notion of space exists independent of the matter in the universe. To counter Leibniz's "everything's relative" stance, Newton put forth his bucket thought experiment, which, as far as I know, none of his contemporaries had a good response to.
2d
comment Formation of supermassive black holes
I'd add that we can adjust parameters for various models for the growth and mergers of these black holes, and this can lead to either underpredicting or overpredicting their abundance. So it's not a situation of "we can't explain where they come from" but rather "there are many ideas that work, we're not sure which most accurately depicts reality."
2d
comment How does the second law of thermodynamics follow from low entropy of early universe?
@Sofia You've highlighted the usual story that gets told, which is what this post is (rightly) questioning. The common story is "entropy was very low in the early universe, so it has generally increased." But that has essentially nothing to do with with a glass shattering when I drop it. And certainly if the universe were to start contracting I would still expect my glass to shatter, not to reassemble itself.
Nov
25
comment Fluid dynamics - immiscible liquids
That discussion can be found in many threads on meta. In particular check out Bite-sizing homework. I think it's fair to say we struggle with trying to filter out people trying to get us to do their work for them (we're not interested, and it only hurts the students, and it's unfair to everyone else in the class), but at the same time be useful as a resource for students whose questions are inspired by their homework (as good homework tends to inspire further questions).
Nov
25
answered On which basis we think there is something more than just super dense matter in black holes?
Nov
25
answered Is there a binary black hole system in the middle of the galaxy?
Nov
25
awarded  Nice Answer
Nov
25
comment Fluid dynamics - immiscible liquids
The close votes so far are all in reference to the homework policy. I actually think this isn't necessarily in violation of the policy, but I could see arguments either way. Know that many veterans of this site have grown weary with the flood of homework, and we see too many "but I even showed all my work, why not tell me where I'm wrong?" complaints (missing the fact that there must be a concept there too), so questions that look vaguely like "<problem> <work> <what went wrong?>" provoke a negative reaction.
Nov
25
reviewed Leave Open Fluid dynamics - immiscible liquids