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location Buenos Aires, Argentina
age 21
visits member for 3 years, 5 months
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2d
comment Is the lay explanation of the equivalence principle wrong?
Also, I remember reading that a clock on an accelerating spaceship will run at different speeds when placed at different heights, which is consistent with the equivalence principle.
Mar
26
reviewed Approve Special relativity revisited
Mar
23
comment Do some of the laws of Thermodynamics break down in Quantum Mechanics?
This is just me, but I interpreted the question as being about whether thermodynamics is applicable at the microscopic level, not whether there are quantum effects in macroscopic thermodynamics. But maybe OP will correct me.
Mar
21
comment How is the conservation of momentum satisfied in long-range attraction such as electromagnetism and gravity?
How I wish virtual particles stopped being a thing.
Mar
20
comment Top speed for a human
Proton $\ne $ photon.
Mar
16
reviewed Approve Applying rotation operator to spin
Mar
15
reviewed Approve Do we need Dark Energy to explain the acceleration of the expansion of the universe?
Mar
13
reviewed Approve Stability of an unstable system using nonlinear element, is it possible or not?
Mar
11
comment Why isn't the path integral rigorous?
Short answer: To define an integral rigorously, it's not enough to just say "and now take the limit $N \to \infty$". You need to prove that your discrete sum converges to something, and that it doesn't matter how you take the limit.
Mar
11
comment What is meant by the following divergent formula?
This is one of those cases where physicists happily interchange limits when it in fact can't be done. However, without understanding the context (and I don't understand it), I can't say what the justification is.
Mar
1
reviewed Approve Confused about Gauss's Law for parallel plates
Mar
1
comment How does one normalize this wavefunction?
The integral is actually pretty straightforward in cartesian coordinates.
Feb
28
comment Interstellar Movie: Black hole shown in the movie
If it was actually light orbiting the black hole, then you wouldn't see it, because the light would be orbiting instead of actually reaching your eyes.
Feb
28
awarded  Popular Question
Feb
27
comment What is the meaning of Einstein's field equation in terms of source and its effects on curvature?
@VikramadityaMondal: Yes, that's exactly it. Everything that we're considering here is a function of $x^\mu$, and Einstein's equations are partial differential equations beteen tensors that are functions of space and time.
Feb
27
comment When generalizing from discrete (but infinite) eigenstates to continuous eigenstates, Why do we change the definition?
I'm not sure that you can prove that $(2)$ is a generalization of $(1)$. All you can do is check that it has the same properties, or that one reduces to the other in some limit.
Feb
27
revised When generalizing from discrete (but infinite) eigenstates to continuous eigenstates, Why do we change the definition?
Changed angle brackets
Feb
27
answered What is the meaning of Einstein's field equation in terms of source and its effects on curvature?
Feb
25
comment Is using molar terms with maxwells relations misguided?
Number of moles is related to number of particles via Avogadro's constant. I'm sorry, but I'm not seeing what the big deal is here. Just replace $n$ with $N/N_A$.
Feb
24
reviewed Approve Electric potential vs potential difference