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Bohemian relativist
Bohemian relativist
01:33
yes, I think the spin-orbit coupling I was talking about is different from usual spin-orbit coupling. I was talking about "a system of atoms in a
square optical lattice under the presence of spin-orbit coupling corresponding to a gauge field". It says in the SU(3) spin-orbit-coupling, the internal
states of three-component atoms are coupled to their momenta via a matrix structure that involves the Gell-Mann matrices. I am not quite sure what this spin-orbit-coupling means - I don't know what orbit here refers to; what does their momentum refer to? Does these atoms moves on the lattice so th…
 
2 hours later…
antimony
antimony
03:27
when did you realise that your undergrad degree wasn't going to teach you 10% of what you'd expect to know by the time you graduated?
i thought i'd come out an expert
but really its just an introduction
Nihar Karve
Nihar Karve
03:49
I genuinely used to think that we would be taught quantum mechanics in 11-12th grade
LearningCHelpMe
LearningCHelpMe
04:33
user image
Hello all. In this example question, I understand that this question can be solved with the kinematics formulae. However, I am trying to solve it with an energy approach. I understand that if an object is in motion, then that object has energy. I also understand that if an object is moving along a surface, then friction will oppose the motion and take away energy from the object.
Since the object is moving up and incline and the weight is opposing the motion of the object. Will the weight of the object also be taking away energy from the object?
satan 29
satan 29
@LearningCHelpMe you can ask problem solving related questions in the Problem solving strategies room

 Problem Solving Strategies

General chat for high school physics. For MathJax see meta.sta...
 
1 hour later…
Vincent Thacker
Vincent Thacker
05:43
@LearningCHelpMe The gravitational potential energy will be converted into kinetic energy as the block slides down.
soupless
soupless
06:08
Hello again
antimony
antimony
hallo
@NiharKarve yeah its funny isn't it. in a way its good that there's more challenges
 
8 hours later…
Bohemian relativist
Bohemian relativist
13:51
@antimony long after finishing MSc.
@antimony by the way, that lecture note about tensor network you sent to me is just what I read before the start of last semester. I found that note isn't self-involved and doesn't align with what the teacher taught in the course I took, so I finally didn't read it further and tried to read the notes the course teacher gave us.
user178758
user178758
A wise policy.
Bohemian relativist
Bohemian relativist
@antimony I afterwards realized undergraduate physics is just the prelude of physics, and main texts of physics didn't start until you entered graduate school.
no wonder when I traveled to a series of seminars, schools, colloquiums, etc. in quasilocal quantities in gravitation, some senior participants, probably faculty members, asked me which stage I was, and I said MSc student, then they said I was just a starter.
Bohemian relativist
Bohemian relativist
14:19
but this may be the explanation for why I have never seen a real physics job offered to MSc graduates in physics in my home country.
ACuriousMind
ACuriousMind
what is a "real physics job"?
there really generally aren't that many positions in industry where they actually want a physicist rather than an engineer
Bohemian relativist
Bohemian relativist
@ACuriousMind the jobs which mainly employ physics disciplines we learn in university, like quantum mechanics, classical mechanics, quantum field theory, general relativity, statistical mechanics, etc.
ZeroTheHero
ZeroTheHero
@ACuriousMind I’m not so sure of this (at all) but cannot expand on this right now. Can I pick up this topic with you later?
ACuriousMind
ACuriousMind
@ZeroTheHero sure
@Bohemianrelativist I mean what actual job are you thinking of? What job is there where you need quantum field theory?
Bohemian relativist
Bohemian relativist
all those jobs for MSc graduates which I see either require experimental techniques or programming techniques.
ACuriousMind
ACuriousMind
14:28
...but you see a lot of QFT jobs for people with higher qualifications???
Bohemian relativist
Bohemian relativist
@ACuriousMind a lot of research fields need knowledge of QFT, but I have never studied QFT systematically.
ACuriousMind
ACuriousMind
oh, by "real job" you mean "research position at a university"?
I'm not really following what you're saying here
Bohemian relativist
Bohemian relativist
@ACuriousMind I have only looked for that kind of job.
I have checked jobs in some companies when I just graduated, but felt I am a real outsider of what they work.
I only applied for few jobs in companies when I just graduated, but only got two chances of interview, one optical company and another battery company.
that optical company interviewer seems not to know anything about what I did in my MSc, and just asked me if my thesis had been published in any journal.
that battery company interviewer told me what they need are people having knowledge about the chemistry underlying battery while I said I only know the basic physics principle underlying battery.

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