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3:01 PM
@Slereah is there any other kind of Russian philosopher?
 
@0celo7 KOTOR (both parts) is...a really great game for the story and companions, but a bit unfinished at certain points. The combat system is a bit weird, but not really bad.
 
@ACuriousMind forgot the second o
 
Did you know that during the soviet union, the party had a tight grip on all philosophy
 
@ACuriousMind Do I need to play 1 first?
 
Like there was an Official Interpretation of Quantum Mechanics
an Official Cosmology
etc
Big bang was frowned upon
And so was the Copenhagen interpretation
 
3:02 PM
@Slereah I was never particularly impressed with philosophers. They are never practical
 
@0celo7 Not absolutely necessarily, but I think the story of the second makes a lot more sense if you've played the first
 
Well neither are theoretical physicists :p
IIRC the official soviet quantum mechanics was either ensemble interpretation or Bohm
 
@Slereah That's exactly what I was going to abuse theoreticians about for you commented.
 
@Slereah Hm, now I want to learn Ithkuil
 
Hear that, @ACuriousMind. You're as useless as a philosopher!
 
3:09 PM
@0celo7 I can live with that
 
D:
 
Even the creator of Ithkuil cannot speak it
 
@0celo7 :D
 
$\varphi$ is way better than $\phi$, there I said it
 
I do like the looks of varphi, but it's three extra characters...
 
3:19 PM
@Slereah You are correct. Also, it's an abomination to use both $\varphi$ and $\phi$ to denote different things, and people doing it should be tarred, feathered, and chased out of town.
 
$\varphi$ is cursive and thus heresy in typed work.
 
Also : varepsilon
Better than epsilon
 
@ACuriousMind I read $\varphi$ as varphi and $\phi$ as phi. They're different characters in my mind.
 
$\mathcal{E} > \varepsilon$
 
@KyleKanos No.
 
3:21 PM
@0celo7 They're both small phis, dammit!
 
Bad CS major.
 
mathcal E is for energy density, kyle
 
@0celo7 But it is bigger
 
Not for small things
 
@ACuriousMind I know this. I don't like when people use $\varphi$. But when they do, it's not phi, it's varphi.
 
3:22 PM
@Danu I do not feel under-appreciated. I simply think that the general population and many physicists have a unrealistic picture of what it is to do experimental physics. This thought is reinforced by comments, like the one from yesterday, suggesting that scientists do not make money. That opinion might be correct if we restrict our definition of "scientist" to those who work in university only on government grants and on problems of little practical consequence.
 
@ACuriousMind $$\varphi(x)=\phi(\vec x)\mathrm{e}^{\mathrm{i}Et}$$
 
I'm now sad that you guys didn't get the joke
 
What joke?
 
@0celo7 Ugh, that's terrible.
 
@Danu However, many people which I would consider "physicists" work in places like NANA, NIST, Intel, Google, Northrop Grumman, countless government contractor companies and even stock market trading (which I think could be argued to be a kind of physics problem as it is the modelling of collective behavior in a natural system, albeit a very complex one) and make handsom livings.
 
3:25 PM
@ACuriousMind You're terrible! ::cries::
 
5 mins ago, by Kyle Kanos
$\mathcal{E} > \varepsilon$
4 mins ago, by Kyle Kanos
@0celo7 But it is bigger
 
Oh, that was a joke?
 
Yes
 
ok, cool
 
@Danu So you see, it's not that a feel "underappreciated", it's that I feel it is damaging to the scientific community and to the world to imply, through statements like the one made yesterday about scientists not making money, that our physicists brothers and sisters working in the industrial sector are not physicsists. Making those suggestions gives e.g. students a warped idea of what they can do with their lives should they pursue the study of physics.
 
3:27 PM
"This site is currently in read-only mode" :O
 
@Danu NANA = NASA
 
@ACuriousMind Have you looked at the current Steam sale?
 
@Danu Also, for the record, I am not only talking about those trained as experimentalists. Those folks working in industry include a healthy number of theorists. This is particularly true among the financial analysts but also true in Northrop Grumman, NASA, NIST, Los Alamos, etc. by my first hand knowledge.
 
Both metro games for $10.
 
@0celo7 I think I'd also suggest Shadow of Mordor and Mount & Blade, though I don't know if you'd like the latter.
 
3:29 PM
@DanielSank The faculty at Clemson try getting prospective undergrads into physics by convincing them that they can make money being a physicist.
 
Well yes but those people are not working as physicists
I know because I am one D:
 
I don't have the monies for the first one. I currently have $24.22 in my Steam Wallet.
 
@0celo7 As said, I don't like 'em, but if you like shooters, they're probably good.
 
I am not fond of working on not physics
 
I could add more money...but I won't.
 
3:30 PM
@Slereah Oh I see. So because you are one case you can say for that entire enormous generalized group of people that they too are not doing physics?
 
Shadow of Mordor has the most fun combat I've ever played, though ;)
 
Yes but I like shooters and 80% sale is pretty great.
 
@KyleKanos Interesting. In my experience university folks have a weird allergy to lucrative work. I'm glad some folks see past that.
 
Oh shit Goat Sim...
 
I can!
BECAUSE I'M A SCIENTIST
 
3:31 PM
Is that any good?
 
B|
 
@KyleKanos At the least I think young folks should at least know that they can make money if that's their goal.
 
@0celo7 lol, no
Oh, Mark of the Ninja is also very nice.
 
@ACuriousMind I love ninja games.
 
I'll wait on KOTOR until the first one goes on sale.
 
3:32 PM
@DanielSank Hell, yeah, they're cool. There are too few of them.
 
@ACuriousMind Side-scrolling ninja game?
 
The faculty make a fair living down here. They start at like $72k/year and are required to teach 6 credit hours per school year (usually broken up 3x3, but some like to do 6x0 so they can focus on research the second semester)
 
@0celo7 Yes?
 
@gonenc Oh, uh, yeah I forget which I use. Anyway, yeah I use \newcommend{ket}[1]{|#1\rangle} so I can type \ket{\Psi} for quantum states. It's awesome.
 
@DanielSank \lvert, not |!
 
3:34 PM
Why not |
 
^ That.
 
Has to do with size scaling, I think
 
Maybe I don't want things to scale.
 
@ACuriousMind Ever played Ninja Gaiden on XBox original console?
HO
SCHIT
LEE
 
\lvertand \rvertare supposed to behave like \left|and \right|, I think
 
3:35 PM
That game is so much fun. It's also the second hardest game ever.
@ACuriousMind Oh, cool. How does it know what group to apply itself to?
 
@ACuriousMind Yours?
 
@DanielSank I played it...that one was hard
 
Also: \usepackage{braket} allows you to use \bra{\psi}, \ket{\psi} and \braket{a|b}without having to define anything extra
 
@DanielSank Mine? No, it was just the first thing that came to my mind when I heard Ninja Gaiden :D
 
3:36 PM
@ACuriousMind wat is mount and blade about?
sandbox ARPG?
 
@0celo7 You...mount horses and slash things with your blade :D
 
more detail pls
why wouldn't I like it?
 
11
Q: Why different bra ket notations?

strpeterWhy are bra and ket defined in the official package braket.sty in two different ways (\bra, \Bra and \ket, \Ket)? I do not understand why there exists the command \bra with non-scalable delimiters. For stylistic reasons, I intuitively used the capital letter versions. Were you ever confronted w...

 
@ACuriousMind don't think I don't like Morrowind, I just think I need to get some of the other faster games out of the way first before I can really sit down and take the time to enjoy it
 
@DanielSank Hm...I'm not sure, perhaps it doesn't and it's just semantics :/
 
3:40 PM
@Slereah : Reading the acknowledgment of the book, apparently there was a theoretical physicist aboard AA Flight 77.
 
@ACuriousMind When I graduated and got a job I decided to collect the best games from when I was young. This happened recently: imgur.com/MA62LUG
 
Why are you telling me, I didn't do it!
I swear!
 
@0celo7 It's very different from Morrowind. It's sandbox, and the game is split between doing quite well done fight between small armies and galloping around the world with your army doing quests and seeking these fights or trading or marrying or whatever.
 
shit that reminds me...are there sales on Origin?
I want to get Mass Effect 1-3 but its so expensive
 
@DanielSank Very cool!
 
3:42 PM
@ACuriousMind I see...why wouldn't I like that?
 
@0celo7 No idea
 
@ACuriousMind Best part is that most of them are really, really cheap.
 
@0celo7 I said I'm not sure if you would like it, not that you wouldn't like it
 
@DanielSank Very nice
 
@KyleKanos Highlights so far are Super Metroid, Mega Man 3, Faxanadu, and Smash Bros. Melee.
 
3:43 PM
I kinda want a PS3 or PS4 so I can play older FF games on PSN
 
oh, and Rogue Squadron 2, that game is incredible.
@KyleKanos Go for it!
 
@0celo7 Oh, now I know you'll like it - I just remembered there's a ton of mods for it, too!
 
@ACuriousMind 66% sale...
 
What's the emulation situation for those systems? My guess is not great.
 
@ACuriousMind I hate mods
HATE THEM
 
3:44 PM
@DanielSank Need a job to do so
 
they take so much time, crash the game and are immoral
 
@KyleKanos Yes. How's that going?
 
@0celo7 Who are you and what have you done to 0celo7?
 
Still looking :/
 
(Note that yard sales are another excellent source of almost free old games)
 
3:45 PM
@ACuriousMind do crack addicts like being crack addicts?
 
My cousin just recommended me going to upwork.com for freelance work to gain some experience
 
no
 
(Why the hell am I pronouncing that name as "ocelo-seven" in my head?!)
 
mod addicts don't like being mod addicts
 
@ACuriousMind It's zero-cello-7 buddy
 
3:45 PM
@ACuriousMind I do that too.
 
it's a T dammit
 
Ocelot?
 
@0celo7 Dunno, didn't they treat that in your online courses? ;)
 
revolver ocelot
@ACuriousMind no
 
@KyleKanos ???
 
3:46 PM
hmm.. The main site is undergoing a Read-only test. The wait must be agonising for John Rennie. Where will he answer in the meanwhile ?
 
also that's not funny, I lost two days of my life to that crap
 
@DanielSank He's a Business Intelligence programmer, I asked if he had any subcontractor work that I could do & he recommended that site for doing freelance programming
 
@KyleKanos what kind of work do you want to do?
 
looks like I meet the system specs for Mount and Blade...
 
oh, programming
 
3:47 PM
I'm mostly interested in data science jobs
 
@KyleKanos any particular constraints on location?
 
@0celo7 It's not that graphics intensive (although I bet you can find mods for that)
 
@DanielSank While I would prefer East coast simply b/c the extended family is there, no
 
BTW, get Warband, not the other one.
 
@ACuriousMind it requires a...card that I don't recognize
Warband is the one on sale, right?
 
3:48 PM
@KyleKanos Well, I mean, I'm biased, but if you want to do some really awesome research with real life data with people who are ridiculously smart... you could try Google.
 
@DanielSank Applied to a few positions, no calls
 
@0celo7 Looks like that to me, yes
 
@ACuriousMind well considering the CPU it requires is a core 2 duo and 1GB RAM, I'm 85% sure I can run it very well
::add to cart::
 
@KyleKanos Interesting. It might be lack of programming experience per se even though you've undoubtedly done a lot of it.
 
3:49 PM
@KyleKanos (Also, they get a ridiculous number of applications so there's some dice rolling)
 
I still have like $7
anything else?
 
@ACuriousMind neither \left| \right>
 
@DanielSank I like to think that it was this aspect than the programming aspect
 
@KyleKanos Yes, something like 20% of Google was hired since I joined... a year ago.
 
Could also be the cover letter wasn't specific enough with "the lingo" to be pulled
 
3:51 PM
Ignorant question: won't they pick the actual CS majors over a physics guy who focused on programming?
 
@0celo7 I honestly don't know. I don't hire software engineers at Google.
 
@DanielSank Hi again, no time to give a thorough response right now, but all your points are reasonable.
(also it's too much of a stretch to call people working in the financial sector physicists IMO)
 
@0celo7 Binding of Issac is also fun, imo
 
Ok. Can we shake hands and go out for a beer?

...

Then get too drunk and fight again?
 
@0celo7 Anecdotally: someone gave a lecture about how tech companies like hiring physicists over CS majors for the same job b/c physicists are more willing to "go with the flow" and not try changing things
 
3:52 PM
@0celo7 They might pick the physicist because brains
 
@ACuriousMind installing
 
@DanielSank always
 
@Gaurav That's zombies you're thinking of.
2
 
@Gaurav Yeah, that's what I was thinking.
 
It'd be funny to meet you in real life :P
 
3:52 PM
will maybe stream Warband after 9 tonight
 
@Gaurav The other thing is that if you have a PhD that means you probably know how to manage yourself reasonably well.
This can save the rest of your team a lot of time.
@Danu Are we... in a relationship?
 
This is kind of nice if you want a bit of info about Wiles' proof of Fermat's last theorem
@DanielSank Maybe, baby
 
@Danu I did advertise my presence at the APS meeting last March. I don't suppose you go to that?
 
There's a course on elliptic curves at LMU next semester... I'm so sad that I won't be able to get that stuff
@DanielSank Sadly, no, I didn't... But maybe some other time? I get funding from my program to go to conferences and stuff...
I'm going to Corfu this year for a workshop on non-commutative geometry, haha
 
@Danu Ayyyyyye!
NICE!
 
3:56 PM
Won't understand jacksh*t, presumably :)
 
@Danu I have very, very fond memories of Greek islands.
I used to date a Greek lady... ::loses self in fond memory::
 
Guess what I'm currently doing? ;)
 
@Danu Good for you, you excellent bastard.
 
She's from Syros :)
 
@Danu Stop. Can't handle nostalgia. zomg
~SIGH~
Milas ta Ellinika?
 
3:58 PM
@DanielSank Sadly not... but I'm learning... I can read it just fine, but don't understand any of the words...
 
I learned Ancient Greek in school...but much has faded :/
 
All I know so far is filakia polla :P
 
^ LOLOLOL
 
@ACuriousMind Same here, hence the reading skills. All the words are different in modern Greek :(
 
@Danu Haha! I remember the first week of my Greek course in Uni. I came in with the advantage of knowing the alphabet from physics, so I slacked. However, when the quiz came I needed to know the order and I failed miserably.
 
4:00 PM
@DanielSank All one really cares about anyways
 
@Danu She used to sing this. Ahhh those younger days.
@Danu Greek is remarkably easy, actually, if you know English or Spanish. The grammer is almost exactly the same as English and the verb conjugations are almost exactly the same as Spanish.
 
Ah man, don't fall into an early mid-life crisis ;)
@DanielSank No hablo Espanol :P
 
Que lastima.
 
Yeah, oh well
 
@Danu But you have English. The grammar in Greek is remarkably similar.
 
4:03 PM
I think I'll do okay. At least I'll be faster than she is at learning Dutch ;D That language is the worst
 
@Danu Really? Sounds like f$@*'d up English to me.
 
verneukt Engels? mwah misschien een beetje...
 
Sounds like f*cked up German to me :D
 
^closer to the truth, sadly
 
@Danu Hm, I've heard German grammar is somewhat hard to acquire.
 
4:05 PM
It's German where one drops all the declinations :P
Anyhow, I gotta run now
 
@Danu Well that is a simplification.
Ciao
 
bye guys! It's been a blast :3
 
^ As always
 
Heyyy
It's the first of the month!
You know what that means?
The new Physical Review D is out!
" Four loop renormalization of ϕ3 theory in six dimensions "
Phi 3?
 
Quick question: Is it possible that the kinetic energy depends on one of the coordinates itself, rather than just the time derivatives?
The problem I try to solve is a pendulum fixed on a point A which is varying in height ξ(t)
 
4:13 PM
Why would I want phi 3
 
@Slereah I guess the answer is: Why not?
@Luke "the kinetic energy"...how have you decided it is "kinetic" if it doesn't depend on a time derivative?
 
I seemed to recall it from the lectures
It was either T or V in the lagrangian which was said to be independent of q or ∂q/∂t. I do not recall which one
but it seems unintuitive as well, how can a quantity telling how fast something goes depend on the location
 
oh, there was a misunderstanding @ACuriousMind. I thought the first answer was directed to me.
 
@ACuriousMind By what standards do you consider him a zombie ? Looks like fucking Gregory Peck to me.
 
4:19 PM
“if it doesn't depend on the time derivative” that's not what I meant. I have a generalized coordinate α and a T depending on α and α'
 
@ACuriousMind theoretician confirmed
 
@Luke Ah, it it's a generalized coordinate, then the "kinetic" term can look however it wants. The Lagrangian formalism doesn't actually know that it has "kinetic" and "potential" parts, the Lagrangian is just the Lagrangian.
 
I love how the "what to bring to college" list includes video games, Guitar Hero, and Xbox.
 
@Gaurav Uh...the zombies were meant to be the persons who pick people for their brains, not the people who have them.
 
@ACuriousMind oh, that clears it quite easily. Thanks!
 
4:21 PM
@0celo7 The official list or yours?
 
@ACuriousMind the list I got from the school website
They must have had a student body vote
"xerox paper"
what the hell is that
 
Paper to use in a xerox?
So, printing paper, I'd guess
 
Printer in my tiny ass room...ugh
Can I put a printer on the floor?
 
Money, keys, comb, wallet, lighter, hanky, pens, cigarettes, contraceptives, Vaseline, whips, chains, whistles, dildos, and a book
 
c'mon Steam please download faster
@Slereah "a book"
but I have two of my textbooks already
 
4:26 PM
@0celo7 Why not?
 
@ACuriousMind My singular ineptness at getting the right reference again exposed in public.
 
@ACuriousMind maybe they explode if you do that
I'm not a printer expert
 
lol, I've a printer on my floor and it has not yet exploded
It's fine
 
@ACuriousMind I don't think you should contract "I have" in that context
@ACuriousMind yes, but you are in Germany...American printers might be different
 
I'll contract what I want!
@Slereah That's an exhaustive list.
@0celo7 Then you'll have to ask an American printer expert
 
4:28 PM
A good college pack!
 
I'm not sure about dildos
plural
Does it have to be plural?
what about one really long one?
 
Of course.
 
like one of those double sided ones
 
Water hose sized
 
I would love for Duffield to come in right now
 
4:30 PM
He would tell us that it is not the dildos that Einstein used
 
@ACuriousMind that's weird
Jul 21 at 19:20, by 0celo7
After living in Germany for 7 years, my archetypal image of Germany is the BDSM club from Alias.
You're not helping that :D
 
@0celo7 I never denied it, did I?
 
@ACuriousMind no
@gonenc At least I don't know ODEs well. Next semester when I take Calc 3, I'll probably shit myself from boredom.
 
obe
@0celo7 I knew it.
 
@obe you knew what
 
obe
4:39 PM
You don't know ode's well unless you read a book about them, and apparently neither you or acm has done that before.
And told me not to either.
 
There's no reason to do it
And you know immediately that ACM can't solve ODEs because he's never heard of the Laplace transform.
@ACuriousMind ;P
 
I think it's been about two years that I actually sat down and solved an ODE.
PDEs are way more common, and even of thsoe I haven't solved a lot
I'm considering taking PDEs next semester, though, since I seem to have already heard every other remotely interesting thing that's offered)
 
@0celo7 I honestly never saw a Laplace transform in any ODE course I took. Which is kinda sad because of how useful it can be :/
 
obe
That's weird.
 
@KyleKanos That's crazy. Everyone knows they're amazingly useful.
Well everyone - {ACM}
I don't know if I want to take PDEs...the undergrad class seems like a joke and the graduate class seems like murder.
 
4:45 PM
I saw it in one of my Astro courses (I think it was radiation processes, but could be wrong on that) at Clemson
 
PDEs are pretty good to know
They are not taught a lot in physics unfortunately
You usually have to make do with like
THE WAVE EQUATION
Everything is a variation on the wave equation!
 
every PDE is just a perturbed wave equation -- theorem
 
Or at least every PDE can be linearized into the wave equation
 
There are papers that have like, exact solutions of PDEs
And I always wonder
How do they do it!
It's always some horrible combination of rational functions, logarithms, exponentials and hyperbolic tangents
 
@ACuriousMind Regarding Metro: Angry Joe loved it and I have yet to disagree with him on a review.
 
4:50 PM
@santiago I wrote a few words about that once: meta.physics.stackexchange.com/questions/5129/…
 
Pretty sure only autonomous PDEs are capable of exact solutions
 
autonomous PDEs?
 
Man you don't even know
There are papers of solutions of weird ass equations
There's a solution to the scalar field in a Kerr black hole
Exact
Although, non-autonomous and non-linear, I'm not sure I ever saw any solution to that
 
@Slereah Probably only numeric
 
4:57 PM
Or like
An equation made to fit a solution
Let's check!
See? It is possible!
 

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