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I'm a graduate student in physics 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!

For matters not related to Stack Exchange, I can be contacted by email at stack@ellipsix.net.


14h
comment A force opposing Gravity
@HarryDavid perhaps you could accept an answer, if you feel your question has been sufficiently addressed? Click the green checkmark next to any answer to accept that one.
22h
comment 2 masses are attached to hanging string and one is released. What is the max height reached by the other?
So, if the conceptual issue that's confusing you is the meaning of $h$ (as I guessed in my last comment), this is a really easy question to fix. I would suggest two things: (1) put the problem itself, the first paragraph, in a blockquote (by adding > to the beginning of the line) and (2) remove the first sentence of the third paragraph, so it's totally clear that you're not asking "how do I solve this problem from here?"
22h
comment 2 masses are attached to hanging string and one is released. What is the max height reached by the other?
There's quite a bit of guidance in our homework policy. Basically, you need to make your question be about a specific physics concept (don't ask what to do next, or anything like that), and especially make it clear that it's about a specific physics concept. In your case, it sounds like the conceptual question might be whether the $h$ in $mgh$ is height off the ground or height from max displacement. If that's what you want to ask, that's a good question; don't distract from it by saying you're unsure of how to use the PE to get the max height.
1d
comment Why is $\pi$ used when calculating the value of $g$ in pendulum motion?
Have you gone through the derivation of that formula? If not, try it. And if you have, could you edit the question to indicate what you're stuck on?
2d
comment Intuitive meaning of a special case of the Bernoulli equation
It's not clear to me what exactly you're asking - generally "Please give your views" or the like is not really a question. Could you perhaps clarify what exactly you want to know?
Oct
22
comment Bra-ket notation and linear operators
@IncnisMrsi I'm having a very difficult time understanding your writing. There are many things that are not clear about your comments. (Who are you addressing?) If you're asking about the parentheses, that simply means that $F$ is a Hilbert space, but the fact that it is a Hilbert space (as opposed to just a vector space) is not relevant to the rest of the argument. I still don't see any evidence of any ambiguity that needs to be fixed.
Oct
21
comment Surviving collapsing buildings: Which floor maximizes your chances of survival?
@rob note that I didn't say there aren't physical principles involved. Of course there are. The issues is that this question isn't asking about one of them. (If you disagree, then I would ask, what physical principle do you think the question is asking about?)
Oct
21
comment Bra-ket notation and linear operators
@IncnisMrsi I don't see the ambiguity you're referring to. Could you clarify your objection?
Oct
21
comment Surviving collapsing buildings: Which floor maximizes your chances of survival?
I think this is off topic because it's not asking about a physical principle. It seems more like a structural engineering question.
Oct
21
comment Recommended books for undergraduate electrodynamics
Hi A.khalaf - I was surprised to find that we don't have a general resource recommendation question for advanced undergraduate electromagnetism, so I've edited your question a bit to fill that role. Someone will post Griffiths' book as an answer but you can just ignore that one and look for the other answers that will get posted.
Oct
21
comment Group representations as vectors and isomorphism between weights and matrix generators
Personally, I maintain that this usage of "representation" to refer to the vectors themselves does not make sense and I try pretty hard not to use it.
Oct
20
comment What is the Weak force?
Hi Riku, and welcome to Physics Stack Exchange! What have you done to try to find the answer yourself? Which other websites have you looked at? Textbooks? etc.
Oct
20
comment Conceptual resources for understanding Physics
I'm not sure if this is on topic, but I'm applying the post notice in case it is.
Oct
20
comment How can one derive Schrödinger equation?
@Bubble related, but not a duplicate IMO since that question is asking for a physical motivation, not a derivation.
Oct
18
comment Why does “closing speed” $>c$ not violate relativity's second postulate?
@Geremia it would help a lot if you edit the question to say why the answer in the Wikipedia page is insufficient for you.
Oct
18
comment How to learn the scientific method for the “hard” sciences as an autodidact?
@BMS I would say that how physics is done is not generally on topic here.
Oct
18
comment Newton's 3rd Law and Equilibrium
Under the assumption that that's the question, I'm marking this as a duplicate, just like the other one. Amanda, if that's not what you were trying to ask, please edit your question to clarify what you mean, in particular to show how it's different from the linked duplicate, and then you can flag it for moderator attention to have it taken off hold.
Oct
16
comment Superconductor symmetry breaking
@huotuichang and FraSchelle I've moved the conversation to chat in case you'd like to continue.
Oct
16
comment What is the significance of clamping the center of the spring?
I've edited the question. Please keep in mind that our homework tag applies to many types of questions that are not actually homework, and in particular it does need to be on this question. (The name is misleading; we're working on that.)
Oct
15
comment Planets and Pluto? Neptune?
I've moved the comment discussion to chat.