45,181 reputation
2081176
bio website ellipsix.net
location Wuhan, China
age 29
visits member for 4 years, 9 months
seen 11 hours ago

I do not respond to off-site contact about moderation. Any moderation questions or comments should go on meta, or bring it up in chat.

I'm a postdoc doing research in high-energy particle physics. I also have a hobby interest in computer programming.

You can find me on Twitter, or check out my blog and personal website! Or you can email me at stack@ellipsix.net.


11h
comment Books about musical acoustics
(sorry to be kind of blunt there)
11h
comment Books about musical acoustics
The point is that not everything fits here. We don't want people posting simple no-context list answers to recommendation questions. I mean, personally I would rather not have recommendation questions at all, but the community has come to a compromise to allow them if we restrict the answers to substantive ones. This compromise is reflected in the recommendation policy. I think I was acting in accordance with that policy by deleting the answer but not closing the question. My thought is, why should your action of reposting the answer, which seems to go against the policy, be allowed?
1d
comment What kind of orbit would be needed to map the surface of a nonrotating planet?
Good question; I'm not quite sure if it's on topic here, but if not, we can send it to Space Exploration.
1d
comment Books about musical acoustics
I'm a little confused - is there something in the policy that allows this sort of answer to exist? This isn't one of the old recommendation posts that is mentioned there.
2d
comment Does the outflowing water create a thrust on the bucket?
Comments are not for extended discussion; this conversation has been moved to chat.
2d
comment Are there any benefits from doing Physics MCQs without a given answer key?
I'm voting to close this question as off-topic because it is about educational/career advice.
Jul
28
comment Dmitri Mendeleev's Periodic Table
Ah, I thought we had decided that history questions were off topic. My mistake. That being said, now that it's been cross-posted to HSM, I'm leaving this alone.
Jul
28
comment Red light in the depths of the ocean
Well, the essence of the question seems to be why a red object would look black in low-light conditions, whereas a blue object presumably wouldn't. That seems like it might be sufficiently physics-related.
Jul
28
comment Is causality a necessary and sufficient condition for special relativity?
Well, what exactly do you mean by causality?
Jul
28
comment Finding velocity using given angle
Please don't post images of math or text. It should be typed out.
Jul
28
comment Explain Stefan-Boltzmann Law?
A web search would give many other resources that are less detailed than Wikipedia and would appear to give an adequate answer. I think this question in its current form displays a serious lack of effort.
Jul
28
comment Potential difference in a circuit of n cells = 0? How?
No, we downvote questions for all sorts of reasons, related to them being low-effort or otherwise unsuitable for the site.
Jul
28
comment If a $\lambda$ (inverse units of distance) is given as a description of a spheromak, what is $\lambda$ referring to?
I think this question is missing some context....
Jul
28
comment Why do physicists trust black hole physics?
I've deleted a comment discussion; please remember that comments are not for extended discussions. Take that to Physics Chat.
Jul
28
comment Why do physicists trust black hole physics?
Comments are not for extended discussion; this conversation has been moved to chat.
Jul
27
comment Magnetism and Photons
@ACuriousMind I think the last paragraph does address the question of where the photons that make up a magnetic field come from, which is technically enough to qualify it as an answer IMO.
Jul
27
comment Alka Seltzer Model: formulas/models requested
Honestly, this seems like a really vague question, and also one that you haven't put much effort into yourself.
Jul
26
comment Topological order and entanglement in quantum quench problem
I'm not actually sure whether this is the kind of resource recommendation that fits on this site, but in case it is on topic, I'm adding the post notice.
Jul
26
comment Solving for the resonant frequencies of a mass-spring system
@Dale no the criterion is "ask a specific physics question" - though I would note that's only a summary of the real requirements which are in the homework policy. Anyway, all you're asking us is to check your answer. That's not the kind of question that is acceptable here.
Jul
25
comment Calculate volume of a crater
I think you'll need to tell us a bit more about this experiment in order to make this a reasonable question - at least, what information do you have access to that you could use to determine the volume of the crater?