The h Bar

12:05 AM

looks like the CIO was at Accenture for 15 years before coming here...no wonder we use Accenture for all our consulting needs lol

enumaris

12:16 AM

dafuq, some recruiter emailed me about a position...I asked for a job description and dude calls me to try to get more background on me...that ain't convenient bruh, just communicate via email bruh...

danielunderwood

Maybe I do have someone on linkedin that's a recruiter then. One of the people I knew in high school works at accenture

Does your company do the whole hiring process through recruiters?

enumaris

yeah generally through robert half

my best friend works at accenture lol

he doesn't seem very happy there tho

danielunderwood

12:34 AM

Yeah finding a happy job seems to be one of the more challenging parts of the job hunt

enumaris

I just want them to show me the money

XD

danielunderwood

I think I'd take a pretty big pay cut for a job I'm actually interested in. I've been in both and it's a crazy difference

enumaris

how big tho

The trick though is to not take a pay cut but still work in something you're interested in XD

danielunderwood

I haven't figured that part out yet

enumaris

the difference between having this <1year of work experience as a data scientist and not having it is like night and day...

cus when I first applied to work here, ain't nobody contacting me

I got like 4 or 5 interviews in the entire 8 month period of me looking for a job

now...3 interviews this week...o.o

the point being, find a data science position, do some cool data sciency stuff, then find a better position might be feasible

danielunderwood

12:48 AM

There's actually a marketing company near me that only has 1 data scientist. I'm considering sending something to their open application

enumaris

but I mean, I also got pretty lucky in that I have pretty much decision power over my own work...since I'm the only "expert" in the area here, there's nobody to tell me what to do w.r.t. the AI and ML stuff I'm doing.

so I built my whole pipeline predicated on the fact that it would look good on my resume (but it also brings value to the company so it's a win win)

the deep spell corrector...basically did that to show that I could build deep learning systems tho lol

its effect on named entity recognition is not all that great

danielunderwood

Don't most data science people end up building a bunch of things that aren't all that helpful?

enumaris

BUT it still does have an effect so, still useful :D

danielunderwood

Or that flat out don't work in some cases

enumaris

hopefully not lol

but I wouldn't be surprised

danielunderwood

12:51 AM

That's how a lot of my kaggle attempts have been

enumaris

I mean if you evaluate the utility of the deep speller at a enterprise wide initiatives level then it's pretty insignificant...but it does do a good job at correcting common spelling errors lol

it does what it's supposed to do

but the bottleneck isn't the quality of the insights output by the NLP but actioning on those insights

danielunderwood

Yeah I also don't have a ton of knowledge about turning business needs into data needs

enumaris

that's pretty important unless you're in a pure research role

or at a company with a very streamlined data anlaytics process

danielunderwood

how do you learn those things?

I have considered looking for an org that I could volunteer for

enumaris

some companies have dedicated data scientists who JUST do data and then there's business analysts who are responsible for translating business needs into data needs and vice versa

but those are the very matured companies and not the norm from my experience

places like Microsoft/Google probably do a good job at that

danielunderwood

12:54 AM

Some places in my area seem to only have business/financial analysis

enumaris

At my company, I have to do both the data part and the business part to an extent

I learned that by working at a boutique consultancy firm for the last 10 years lol

"that" = understanding business needs

I think business needs is more of an experience type thing

but I mean, if you don't want to deal with that, just apply somewhere where their data analytics is very mature

you gotta determine that during the interview process by asking about the team structure and stuff like that

see if they know what they're doing before you join

Microsoft seemed to have a pretty good process flow going

they even have a research center for those "really" tough questions that "normal" data scientists struggle with

that was pretty cool

danielunderwood

hmmm

enumaris

I'm trying to push my company towards that Center of Excellence approach...slowly...

danielunderwood

Maybe I should just create my own product that makes job searching less confusing/stressful lol

enumaris

lol

entrepreneurship definitely is an alternative

you gotta be OK with being broke tho...just in case...

going broke, fighting back up...staying awake at night cus you gotta secure funding tomorrow and if that funding doesn't come through you're outta money......

stuff like that

I'd be glad to give some pointers in that if you want at some later time lol...but it's about time I head home :D

later~

rob

5:39 AM

Whoa! I've just noticed that pressing 'j' and 'k' (the line-up and -down keys in the venerable unix visual editor) highlights a post and lets you move around a page on SE. It's useful both on the list-of-questions pages (where 'enter' takes you to the linked question) and for moving among the answers to an individual question.

My dog thinks this discovery is stupid. She says I should quit tapping on the rectangle and play with her.

undefined

9:31 AM

hello :)

Student404Mus

9:49 AM

My question is related to this post : physics.stackexchange.com/questions/46975/…

Can we say the contraction $C(A(z)B(w)):=\sum_{n=1}^{N}\frac{\{AB\}_n(w)}{(z-w)^n}$ is analogous to the average value of $\langle A(z)B(w)\rangle$

John Rennie

Someone has patented a method for producing antiprotons and ntineutrons. Good luck commercialising that.

Slereah

10:06 AM

He's gonna sell it to TERRORISTS

John Rennie

May Dan Brown would like to buy it for his next novel.

Slereah

Still no answer for those letters

I'd better make a cover letter for Saclay university today

Blazar

@Slereah Applying for job?

Slereah

Thesises

Blazar

Wow, cool

Slereah

10:19 AM

It will be cool when I get it

Blazar

@JohnRennie Is that a cause of concern?

Like,is it very dangerous

John Rennie

:-)

No

You would produce vanishingly small amounts of antimatter using that method.

Blazar

@JohnRennie Ahh,i thought it would be the end of humanity

John Rennie

@Blazar no such luck I'm afraid

Blazar

@JohnRennie So, is quantum mechanics your area of expertise?

Slereah

10:22 AM

@Blazar it is toothpaste

Blazar

@Slereah Lol,why though

John Rennie

Close :-) I worked as a colloid scentist, which is on the boundary between physics and chemistry. I have indeed worked on toothpaste, as well as shampoo, washing powder and anti-perspirants.

4

Slereah

do any of them contain antimatter

Blazar

@JohnRennie Wow, must have been awesome

Oxford university?

John Rennie

New Antiperspirant. Use this and your armpits will never sweat again!!

(caution: may cause localised explosions combined with gamma radiation)

@Blazar my PhD was from Cambridge. My work as a colloid scientist was in industry working for Unilever.

Blazar

10:27 AM

@JohnRennie Holy cow

i guess i am really un-experienced to even chat here

John Rennie

This sort of thing

Blazar

@JohnRennie You still remember all those?

or do you revise from time to time?

Slereah

John Rennie

@Blazar No, I'm retired now. I do general relativity and quantum mechanics just to stave off the inevitable decline into senility :-)

Slereah

you're old, @JohnRennie, you should be saying that quantum mechanics is the source of consciousness

John Rennie

10:33 AM

@Slereah I taught Roger everything he knows

Wasserwaage

Hello there! I thought the general physics chat might be the best place to ask for a good literature recommendation on the statistical physics approach to magnetism. Until now, our lecture (notes) have been following Kerson Huang's Statistical Mechanics. Now we're doing the Heisenberg, Ising and XY models - of which only Ising is done in detail in Huang. I'm sure all of that is done in detail in some nice textbook on either magnetism or solid state physics. Can anyone recommend one?

Blazar

@Slereah Lol

undefined

I have a hard time understanding "gravitational time dilation"

John Rennie

@undefined in what way?

undefined

@JohnRennie in the way that I try to understand this answer physics.stackexchange.com/a/440894/197759

John Rennie

10:46 AM

@undefined that is about the Rindler coordinates not gravitational time dilation.

undefined

maybe it's just a wording or language problem but I have problems to identify all the lines in each diagram he describe in his answer

I know, I specifically mean this [quote] a clock at a given height h gives more ticks per unit change of θ when h is large. This is the "gravitational time dilation". [/quote]

he is talking about tick marks which should show that. But I can't really identify which marks he mean

John Rennie

The Rindler coordinates describe flat spacetime in accelerating coordinates so it isn't gravitational time dilation. Note the author uses quotes. However I guess you can invoke the equivalence principle and say that they also describe a hypothetical infinite uniform gravitational field.

undefined

yes but how?

John Rennie

I'm personally not a huge fan of diagrams like the one in that answer. My preference is to work from the metric.

The Rindler metric is:

$$ c^2d\tau^2 = \left(1 + \frac{a}{c^2}x \right)^2 c^2 dt^2 - dx^2 $$

where the $t$ and $x$ are the times and lengths measured by the accelerating observer at the origin of the frame.

If you consider a second observer who is stationary at a distance $x$ then $dx=0$ and the metric becomes:

$$ c^2d\tau^2 = \left(1 + \frac{a}{c^2}x \right)^2 c^2 dt^2 $$

so the time dilation $d\tau/dt$ drops straight out.

undefined

11:05 AM

awesome, thank you. Now for the rest of the week my task will be to really understand your answer, thank you for that :)

John Rennie

There is another way of looking at this ...

undefined

which one? If you would like to share

I'm always curious

John Rennie

Suppose you are an observer stationary on Earth watching the accelerating observer speed by. In your frame the accelerating observer is continually increasing their speed so the Lorentz factor is continually increasing, and therefore the Lorentz contraction of distances is becoming greater and greater. OK so far?

undefined

alright, yes

I'm happy that I understand that so far

John Rennie

Now suppose you're on the rocket watching another observer who is at a constant distance $x$ from you. because the Lorentz factor is continually increasing the constant distance $x$ in the accelerating frame corresponds to a continually increasing distance in the Earth rest frame. Yes?

undefined

11:17 AM

is the "another observer" in the same frame of reference as the rocket?

John Rennie

@undefined don't worry about the other observer. All that matters is the inertial observer on Earth watching the rocket speed by and the accelerating observer at the origin of the Rindler coordinates.

The point is that a constant distance in the frame of the accelerated observer corresponds to a continuously increasing distance in the Earth frame.

undefined

"increasing distance in the Earth frame" distance to/between what?

John Rennie

Distance between the position of the accelerating observer and the third party who is at a constant distance $x$ in the accelerating observer's frame.

Maybe I should draw a diagram ...

undefined

I had the same thought too but that I draw what I understand. It is a bit abstract for me

John Rennie

undefined

11:31 AM

or did you mean that the constant distance between "the guy on the rocket" and the "observer2 at constant distance $x$ to the rocket" (who is in the same frame of reference as the rocket), has a continuously increasing distance viewed from the "observer3" who is on earth and watch the rocket and the observer2?
Like the distance in the frame of the rocket and the observer close to the rocket is constant for those two but for the observer on the earth it looks like the distance between them is continuously increasing (in his earth frame)?

John Rennie

See above for my attempt at a diagram to explain what I mean. In my frame (the Earth frame) the distance $d$ between you and the bug is $d$. In your frame the distance will be $x = d/\gamma$ where $\gamma$ is the instantaneous value of the Lorentz factor corresponding to your speed $v$.

@undefined yes, I meant what you describe in your second paragraph.

Constant $x$ in your (accelerating) frame means steadily increasing $d$ in my (Earth) frame.

undefined

thank you, now I got that

@JohnRennie really, thank you for your time. I really appreciate that and it means a lot for me :)

John Rennie

@undefined Phew :-) And with that we are nearly there because if I observe the distance $d$ to be increasing with time then in my frame you and the bug must have different velocities. And if you have different velocities then your and bug's clocks run at different rates.

undefined

and the rate the clocks run, increase (corresponds) with $d$ too? in your frame

John Rennie

In my frame both you and the bug have continuously increasing velocity, so both of your Lorentz factors and therefore time dilations are continuously increasing. My point is that at all times the bug has a higher Lorentz factor than you do so the bug has a greater time dilation than you do.

undefined

11:51 AM

does all of that has anything to do with the Bell's spaceship paradox? I mean is there the same concept behind?

John Rennie

Yes. The Bell's spaceship paradox is very closely related.

undefined

nice :)

it came to my mind when I thought about what you wrote

uhoh almost missed lunch time. Will be back in like 30 minutes.

and thank you again

John Rennie

tl;dr accelerating frames are weird :-)

undefined

12:39 PM

@JohnRennie I like the weird stuff somehow

is there a threshold for c at which those effects happen? I remember something like ~60% c?

Blazar

physics.stackexchange.com/questions/441079/… Take a look at this question,do i need to flag it ? This seems really vague

Avantgarde

Interesting question. Group contraction. But I think the OP is confused about how one arrives at Lorentz from Galilean transformations ... including motivations, I suppose.

user351417

1:08 PM

@Blazar I thought it was somewhat vague because although it's clear that the gamma is the lorenz factor from the context, I have no idea how one would describe the 'relationship' between transformations: the closest I can imagine is a comparison of where you use which. But eventually, since there was no description of OP's research/thoughts and they clearly hadn't even bothered to check that it's not 'galalian', the homework VtC was appropriate.

Blazar

@Chair hmm,yeah

bolbteppa

1:33 PM

@Wasserwaage those are usually discussed more in integrability notes rather than stat mech books

Slereah

2:38 PM

why are university websites so bad

user351417

2:52 PM

@Slereah They need to make websites difficult to navigate because otherwise undergrad applicants would be able to find the information to answer the essay prompt "why do you want to attend this college?" easily.

Anonymous

The university IT guys aren't generally paid well. The good web designers and database managers would rather work in the industry.

Anonymous

My university's student (database) website (containing all our grade cards, admit cards, etc) is so awful that you can view other student's accounts by just changing the roll number in the URL.

danielunderwood

I think my university's stuff was mostly made by student workers. Though I suppose we did have a big CS department

The public site was fine, but the internal portal was a real pain

danielunderwood

3:50 PM

Is it possible to have coordinate patches where the coordinates aren't related by smooth invertible functions?

fireballs

4:46 PM

Hi all, I'm looking for a good text on comsology. I'm currently trying to decide between The Early Universe by Kolb & Turner, Dodelson's text, or Weinberg. Does anyone have any recommendations?

I'm particularly interested in early universe physics so the first one sounds appealing, but I think it only has one edition and a somewhat old one at that

enumaris

5:01 PM

womp

0

A: How does relativity dimensional contraction affect point like particles such as the electron and neutrino?

Electron is not a point. It does have dimensions, though very tiny. Length contraction is experimentally observed in case of subatomic particles called muons/mesons, where their density increases due to flattening of their shape.

this answer is just wrong right...I've never heard of electrons and muons not being point particles

ayyy John "Tech Support" Rennie has chimed in - and thus it is so.

danielunderwood

Well now JR's comment has made me go wondering about hadron contraction

John Rennie

@danielunderwood hadrons are bound states not fundamental particles and they do have a size. I say that in my comment.

Curio

What is the potential standard of Fe when it becomes Fe3+?

danielunderwood

5:16 PM

Yeah that makes me wonder if anything weird goes on, especially regarding the uncertainty principle. I don't know enough about QFT to know if it makes sense to wonder about that though

Curio

@danielunderwood any ideas?

danielunderwood

I suppose the wave function would get compressed...maybe

I have no idea what "potential standard" is

Curio

@danielunderwood en.m.wikipedia.org/wiki/Standard_electrode_potential

Found

Lol

danielunderwood

@enumaris don't know if it's your type of thing, but I just saw this boards.greenhouse.io/wikimedia/jobs/1342648

Ideally as a PHP module twitch

Also do you use AWS/GCP/other clouds for stuff at work or when you did your PhD?

enumaris

wikimedia eh...

I don't think I'm applying to positions out of LA for now unless it's like openai or something like that tho

I didn't use cloud computing for my PhD

my computation was just done on the physics department computers

the guy before me did supercomputing for his thesis tho

he used the supercomputing cluster at LANL

danielunderwood

5:29 PM

Well that one's a temporary consultant thing, but it seemed to be about spell correction

enumaris

ah...

I will take a look XD thx

danielunderwood

Did you run into issues getting computations done? I know some of the grad students I worked with had issues getting the resources they needed it made me want to do something about making it easier for scientists to use cloud computing and such. Then I was thinking last night that data scientists could possibly use the same type of thing to easily run gpu computations

enumaris

@danielunderwood seems like a bit too much work for me to just find work at this time lol

@danielunderwood no real issues for me...the simulations took about 72 hours to run on a single machine

not too bad

no need for a supercomputer anyways

tencent games person didn't respond to me :( oh well

danielunderwood

Ahh maybe we just weren't organized as far as IT went. We had like a dozen machines with no clear knowledge of what to run on which and not so much in terms of centralized storage

Didn't they contact you first?

enumaris

indeed they did

recruiters are fickle lol

danielunderwood

5:40 PM

Clearly I need to go into recruiting to actually understand

enumaris

I can always apply for the position directly

but I'll wait a week or so before I look into that

danielunderwood

I feel like contacting someone first and not responding to their reply is just a waste of time. Or maybe they just take ages to reply

I actually had a recruiter contact me over a month after I applied to a position

enumaris

maybe they like wasting time lol

that's pretty common

danielunderwood

Though I suppose that may be one of the "hiring for talent" things you mentioned

enumaris

I think coursera took like 3 months to contact me lol

danielunderwood

5:42 PM

I want to be "Learning QA" for Coursera...just go through courses all day

John Rennie

Our prime minister, Theresa May, is currently giving a speech on the Brexit deal she has negotiated. She has achieved something remarkable in negotiating a deal that has unified all side of the argument - everyone hates it.

enumaris

what's the deal?

Semiclassical

i guess the question is "do they hate it so much that they won't accept it"

enumaris

borders w/ Ireland or not?

John Rennie

And indeed her own party has launched a no confidence motion to try and force her to resign (though it looks as if that doesn't have the required support). The whole thing is descending into farce.

Semiclassical

5:44 PM

oof

danielunderwood

Hey at least they can be unified to hate it...I feel like some people over here like an idea just because the other side hates it

John Rennie

@enumaris the basis of the deal is that the whole UK remains in the customs union until everone can work out what to do about the Irish border issue.

enumaris

only almost?

danielunderwood

almost has mysteriously disappeared after I read my comment

Semiclassical

@JohnRennie sounds like an enormous game of "kick the can"

enumaris

5:45 PM

@JohnRennie so leave but not leave kinda deal?

ACuriousMind

@JohnRennie A deal that everyone hates is clearly an equilibrium state for negotiations - no side is going to agree to a change that the opposing side hates less ;)

John Rennie

@Semiclassical exactly. It's a massive fudge.

enumaris

doesn't sound promising

Semiclassical

it's one of those scenarios where it would be great comedy were it not reality

John Rennie

@ACuriousMind the problem is that everyone will vote against the deal and that will result in a hard Brexit and massive economic disruption.

Semiclassical

5:46 PM

(which is how I summarize US politics right now tbh)

ACuriousMind

@JohnRennie I didn't say that equilibrium is good!

Semiclassical

@danielunderwood eh, think back to how the whole "repeal obamacare" debate went down in Congress

John Rennie

Details here in the unlikely event anyone is interested

To be fair May's determination is quite extraordinary. In her place I'd shout screw the lot of you and go on holiday for six months.

Secret

Random philosophy question. Distinguish between A causes B vs B is correlated by x seconds ahead in the future of A (in some lab frame)

Semiclassical

the relatively moderate part of the party and the hardliners didn't agree on how to do that, and there were enough dems in congress that a deal wouldn't go down without both parts of the GOP agreeing

which meant that the attempts to repeal it ended up being a compromise. only problem was, it was a compromise that nobody liked

danielunderwood

5:50 PM

@Semiclassical I honestly have no idea where the whole healthcare debate is at this point. I remember there being some vote and then a bunch of stories about attempts to break obamacare from the inside. But that was before politics got even crazier

Secret

For example, there could be two spacelike separated events A and B that occured such that in some frame of reference, B happens to occured 5 seconds later than A

John Rennie

Amusingly I'm entitled to an Irish passport because my father was born in Ireland, so I could personally remain in the EU :-)

danielunderwood

Ahh right I do remember different parts of the GOP disagreeing and causing issues

Semiclassical

left too much of obamacare would b eleft in place to satisfy the hardliners, and too much would be removed to satisfy the moderates

danielunderwood

That seems like years ago at this point

Semiclassical

5:52 PM

so you were left with a situation where congress was indeed united in opposition to any credible proposal

not united in reasons, of course

But that seems about as good you'll get as an analogy in US politics to what's happening with Brexit

enumaris

I have a suspicion that even the proponents of brexit were only promoting it for image reasons while thinking "lol, we ain't dumb enough to actually pass this" the whole time...

but lo and behold it passed and now ain't nobody really wanna deal with that

danielunderwood

Is the political spectrum in England similar to here in the US?

John Rennie

@enumaris there is a hard core of politicians, both parties, who hate the idea of the UK being subject to any legislation from Europe. They are all generally wealthy enough to not care about the economic damage Brexit will bring.

Secret

Some of my more conservative friends said that if Brexit goes smoothly, it may benefit UK as it will not be subjected to some constraints of EU regulations or something

and some say there is a trend that EU will dissolve somewhere in the near future

John Rennie

Bollocks

enumaris

5:56 PM

they got lots to lose, but I guess even after losing lots, they still will be wealthy...

John Rennie

To both statements

Semiclassical

Yes, well

that feels like the equivalent of saying that, if you manage to land gently after jumping out of a plane without a parachute, you'll have the benefit of standing on the ground

John Rennie

@danielunderwood no, the extent of division in the US seems extraordinary to us Brits.

@Semiclassical though you'll find you have landed in a desert

Semiclassical

lol

yeah

John Rennie

:47632564 sorry, that was a typo

Secret

5:58 PM

I see

enumaris

painful times

Semiclassical

the notion that a smooth Brexit is possible at this point seems pretty risible

enumaris

on an interesting note, Mr. Cheeto has admitted, without being prompted, that he appointed Whitaker to get rid of the Russia probe

John Rennie

I think a hard Brexit is now inevitable

Semiclassical

@enumaris of course he did

Why wouldn't he?

fireballs

5:59 PM

Is the possibility of a second referendum at all possible, or mainly just bandied about in op-eds?

enumaris

GOP still twiddling thumbs at this point

John Rennie

@fireballs no chance

enumaris

sounds legit

fireballs

That's what I expected to hear

Semiclassical

@fireballs from the sounds of it, that'd require more sensibility and caution than is available

fireballs

6:00 PM

A referendum with some threshold of turnout required to be considered definitive or whatever

Or even compulsory, to settle the question

But yeah I'm following everything from the other side of the pond so its hard to get a sense of the political landscape

danielunderwood

On the bright side, I suppose all this stuff gets people more interested in what goes on in politics

Though I miss the days when I didn't care

Semiclassical

6:21 PM

@JohnRennie I suppose there's a bit of a sunk cost argument there: so much energy has been poured into Brexit that we can't go back and question it now

(that and the contingent of people who think that the EU is terrible and Brexit needs to happen regardless of the consequences)

rob

7:09 PM

@danielunderwood I've had it pointed out several times recently that the option of "not caring about politics" is a privilege afforded to only a few.

enumaris

like those few who are wealthy and old enough that global warming won't affect them?

fireballs

them, but also a larger segment of the population for whom politics is just something they 'do on the weekend' as it were

danielunderwood

I guess I probably should have cared about it, but I always felt that reasonable choices would be made regardless of which party was in power before the current situation

@enumaris this may just be the way it was done before NNs, but has anyone tried to handle language symbolically rather than generating vector representations?

enumaris

you mean like by using regex and stuff like that?

what do you mean by "handle" and "symbolically"?

danielunderwood

I was thinking kind of a "language algebra" to determine what a document meant...I'm not really sure I had an output in mind though

enumaris

7:16 PM

o.o

hmmm

well there was definitely a lot of manipulating the text using things like regex going on

keyword searches

danielunderwood

Some sort of parallel to doing a numeric computation compared to symbolic math

enumaris

and all that kind of stuff

bigrams and trigrams?

n-grams?

rob

9 hours ago, by John Rennie

Someone has patented a method for producing antiprotons and ntineutrons. Good luck commercialising that.

That patent makes for ... amusing reading.

"Trap free neutrons inside carbon cages by irradiating some fullerenes"

"Then just wait for baryon-number-violating neutron-antineutron oscillations!"

"Step 3: profit"

enumaris

7:39 PM

you mean step 3: ???

step 4: profit

rob

8:10 PM

oh no have I memed wrong?

2

I mean, there's an awful lot of "???" in the first two steps.

Andrii Kozytskyi

hi

do I understand correctly that monpoles don't have dipole moments?

Andrii Kozytskyi

8:27 PM

hmmm

thanks

Semiclassical

Need to correct that a bit

The trouble is that the definition of the dipole moment makes reference to the origin of your coordinate system

Andrii Kozytskyi

I guess you meant that it depends on the choice of coordinates?

Semiclassical

Yeah. If your system of charges has a net charge (ie a monopole moment) then the dipole moment is coordinate-dependent

It only becomes coordinate-independent when the net charge is zero

So if you have a single monopole, and you choose your origin to be at said monopole, then the dipole moment vanishes

But if you chose your origin to be anywhere else, then the dipole moment is nonzero

Andrii Kozytskyi

yea, I was just confused a bit because of how the task was formulated

thanks

Semiclassical

Np

(Same goes for the quadrupole moment and so forth)

enumaris

9:01 PM

I feel sleepy after eating lunch...

Anonymous

@enumaris Exercise helps :P

enumaris

too sleepy

Anonymous

Or just dance like a madman for 5 mins. You'll no longer feel sleepy

enumaris

maybe I should visit the quiet room and try to nap a bit

the quiet room is all glass tho...

which totally defeats the purpose...

nevertheless

I can go sit there for 15 min

Anonymous

Lol

Anonymous

9:10 PM

I heard some companies have nap rooms

Anonymous

Sleeping while on duty

Sleeping while on duty or sleeping on the job refers to falling asleep while on the time clock or equivalent, or else while responsible for performing some active or passive job duty. While in some jobs, this is a minor transgression or not even worthy of sanctioning, in other workplaces, this is considered gross misconduct and may be grounds for disciplinary action, including possible termination of employment. Recently however, there has been a movement in support of sleeping, or napping at work, with scientific studies highlighting health and productivity benefits, and over 6% of employers in...

Anonymous

> Recently however, there has been a movement in support of sleeping, or napping at work, with scientific studies highlighting health and productivity benefits, and over 6% of employers in some countries providing facilities to do so

Anonymous

I don't know if that's true but it sure works as an excuse :P

danielunderwood

I usually go on a walk when I start getting sleepy

Or a cup of coffee...or both

Are professional masters a thing in the US?

Anonymous

@danielunderwood Umm, aren't the non-thesis masters sorta that?

Anonymous

9:15 PM

Or do you mean something else

danielunderwood

Like working at a company for your masters. I know some places will pay your tuition, but you're usually doing any education separate from your work

Anonymous

Oh...that's probably rare. I can't think of any place which has such a thing. For example, I know places like Rigetti which train you to become a "PhD equivalent" but afaik they don't hand out degrees

Anonymous

Xanadu or Rigetti. I confuse them

danielunderwood

oh no...I let tpot run for a day and left an identifier in the training data

Ahh I haven't really heard of them often. I just saw something that listed both a master's and professional master's

Well it was "Professional Masters" and "MSc Research" so I suppose the professional one may just be more applied

enumaris

9:38 PM

I'm not familiar with programs like that

the quiet room is pretty useless tho tbh

all bright...all glass

they don't want to make it private cus I think they are worried people will like...get intimate in there lol

hmmm...

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