26,365 reputation
458100
bio website
location Princeton, NJ
age 25
visits member for 2 years, 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).

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


Oct
31
comment Do primordial background neutrinos orbit in dark matter halos?
How timely. This paper, Neutrino clustering around spherical dark matter halos, was put on the Arxiv just a week ago. I think the short answer is "there is a small but nonvanishing amount of neutrinos." Perhaps someone can use this or some other paper as a launching-off point for a complete answer.
Oct
31
comment What is the depth in meters of the pond?
@akusaja A basic overview is here. A more thorough guide covering many more features is here.
Oct
31
reviewed Approve convection tag wiki excerpt
Oct
31
reviewed Approve How are constraint forces represented in Lagrangian mechanics?
Oct
31
reviewed Approve superfluidity tag wiki excerpt
Oct
31
reviewed Approve superfluidity tag wiki
Oct
31
reviewed Approve convection tag wiki
Oct
30
reviewed Close Alternative derivation for the capacitor energy equation
Oct
30
reviewed Leave Open Relationship between frequency and wavelength
Oct
30
reviewed Leave Open Experiments looking for monopoles
Oct
30
reviewed Close Particle Spacing in a Vacuum
Oct
30
reviewed Close Explain what happens to object in lift
Oct
30
comment current in wire + special relativity = magnetism
First question: Yes. Second question: You have to be consistent which frame you are in, and you have to specify which frame has the neutral wire. In the test-charge-stationary frame in Case 3, I assume there is a current but the wire is neutral, as is often the case in laboratory setups. You can't assume the wire is neutral in some other frame - that would be a contradiction. If you want to change to another frame, you have to do 3 things: find the new speed of the test charge, find the charge of the wire, and find the current in the wire. Then apply Lorentz.
Oct
30
answered current in wire + special relativity = magnetism
Oct
30
reviewed Reviewed How does velocity cause time dilation?
Oct
30
reviewed Reviewed Doppler effect problem with moving mirror
Oct
30
revised Doppler effect problem with moving mirror
added HW tag; blockquote and minor tex
Oct
30
reviewed Reviewed Quantum fluctuations and expanding universe
Oct
30
reviewed Reopen Is everything in the universe discrete?
Oct
30
reviewed Reopen Electrons of conductors Free?