15,112 reputation
33563
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location Princeton, NJ
age 24
visits member for 1 year, 9 months
seen 3 hours ago

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


Mar
11
comment Very large absorption lines in stellar spectrum
Relevant links to SDSS site: here and here
Mar
11
answered Most efficient type of heat pump
Mar
11
comment How is Doppler redshift of distant galaxies established?
And indeed it took a number of years before astronomers realized quasars were at extremely high redshifts; before then, they were trying to fit the spectra to all sorts of crazy combinations of high-ionization states of very rare elements.
Mar
8
answered Difference between theoretical physics and mathematical physics?
Mar
8
comment Where do planets get energy to revolve around sun?
BTW, electrons don't fall into nuclei because of their own angular momentum, etc. considerations. If anything, the (weak) nuclear force helps them fall in - this is known as electron capture
Mar
8
reviewed No Action Needed Maximum theoretical bandwidth of fibre-optics
Mar
8
reviewed No Action Needed Why the CFL light bulb flashes even if there is a power cut?
Mar
8
reviewed No Action Needed Can the solar system really fit in a thimble?
Mar
8
reviewed No Action Needed why is the transition $3p^53d^2 \to 3p^63d^1$ (hydrogen atom) forbidden?
Mar
8
comment When I ride my bike, does half of the energy go into the earth?
Hi @krs013, and welcome to physics.SE! In case you didn't know, we have Latex-style markup enabled, as I've edited into your answer. (Not that it's strictly necessary for such short equations, but it's there in case you want it.)
Mar
8
revised When I ride my bike, does half of the energy go into the earth?
texified
Mar
7
comment Nuclear transition notation
@dmckee Oh I agree it has more information, but I contend it's something of an abuse of parentheses and commas - they take on meanings here very much unaligned with their typical interpretations (grouping of inputs, separating things whose order isn't physically important, etc.)
Mar
7
comment Nuclear transition notation
No, but to be fair this notation is quite awful - almost as unintuitive as the stuff we use in astronomy
Mar
6
comment What do physical properties of materials trigger the capacitive touch screen?
I'm not an expert, but are you sure the screen you tried was the capacitive design? After all, there are touchscreens that work by circuit completion, pressure, or heat.
Mar
6
answered Why do bullets in a magazine go up instead of down?
Mar
6
comment When should I take wine out of the fridge - transient heat transfer problem
@drN Radiation may very well be a small effect, but to the extent you want to include it, blackbody radiation will probably be pretty good. All other (nonliving, non-lightbulb) solid objects in the room will decently approximate a blackbody at the room temperature, at least in the IR part of the spectrum. If everything around you is the same in this regard, all the shape factors will add up in such a way that you don't need to consider them.
Mar
5
comment What is the optimal weight for a golf ball?
"Physics is a method": +1
Mar
4
comment Water Stream from a Horizontal Surface
Is this what you are asking: Shoot a perfectly laminar stream of water directly up, against gravity. What happens when it reaches its maximum height and needs to fall down? Does it fall down in the same volume as water is shooting up (interpenetrating molecules), or does it spread outward, or something else? If this is what you mean, perhaps you should rephrase the question to make it more clear.
Mar
4
answered If you had two “perfectly” flat surfaces of the same material?
Mar
4
revised How “big” objects can WISE and NEOWISE detect?
retagged; added link