The h Bar

11:00 AM

IITs are ranked higher than IIITH because of non-academic stuff

Is independent publication at an undergrad level ever a good idea? (I mean, without a mentor/coauthoring with a professor)

Avantgarde

always have it reviewed by your profs

and yeah, if you can do it, and do it well, it's pretty good

Dattier

Hello,

I would like to describe a physics of the bags, but if that already exists there is no need to reinvent the hot water.
Indeed, to base his theory on logic is dangerous, because it is dead or doomed to die, not in a long time.

The physics of the bags is an analog of ZFC, but constructed from the physical model of the bags and validate by this model, instead of constructing a theory and asking the question of the model, I start from the model and tries to describe A theory (just like in physics).

Avantgarde

ZFC?

Anonymous

@JohnRennie One question: Do I focus on only one sub-topic like Solid State Physics and perform research work on that single sub-topic throughout my four years or pick 3-4 sub-topics of my interest and work on all of them? Do the chances of doing successful research increase if I have a broader focus?

0celo7

11:08 AM

@AHB that's analysis, not physics

John Rennie

@Blue I'd be very surprised if your university gave you a choice. At least in the first couple of years. Universities normally require you to do a wide range of courses for at least the first year and you don't get to specialise until your final year.

@Blue in any case you may find your interests change as you learn more about physics. I ended up working in a field that I didn't even know existed when I first started at university.

Dattier

ZFC : fr.wikipedia.org/wiki/…

John Rennie

@Dattier yes we know what the ZFC axioms are, but what have they to do with physics?

0celo7

@Blue if you have any sense you will switch to a more respectable field

Just win baby

respect?

0celo7

11:13 AM

@JohnRennie AHHHHHHH

It's happening!

Balarka Sen

@0celo7 Only broken men do analysis.

Dattier

The logics is going to died, and I want build a physics of reasoning

@John

John Rennie

@0celo7 So are you going to spend the night assembling it? Or leave it till tomorrow?

0celo7

@JohnRennie I told my brother I would build it with him, so I'm waiting until tomorrow evening. The wait will probably kill me

I'm going to Skype with @BernardoMeurer and he can meet the rest of my family

He has met some of them already

John Rennie

That's a big case!

0celo7

11:16 AM

@JohnRennie Bernardo said it was a small form factor

John Rennie

Have you got a DVD drive or are you going to install Windows from USB?

0celo7

@JohnRennie From a USB

John Rennie

@0celo7 I was just going by the picture. Let me Google it.

0celo7

I'm downloading the drivers tonight

Just win baby

what's the whole thing going to cost you?

0celo7

11:17 AM

@Justwinbaby 1.5k

Anonymous

@JohnRennie Umm, does that mean they won't allow me to do research work in say Semiconductors or Photonics (like Summer projects or something) when I am in my first year of electrical engineering? :/ That sounds bad. :P

0celo7

@Blue Jesus Christ, semiconductor is not a proper noun

John Rennie

@0celo7 ah yes, it's a micro ATX case. It looks nice!

0celo7

@JohnRennie Did you see my mofo GPU?

John Rennie

It's not on the picture, but I think i saw a post of you saying you'd gone for one of the GTX 1080 variants.

Dattier

11:19 AM

step step by, let the logic died, and maybe I will back, bye

Hritik Narayan

@Dattier See you

John Rennie

That looks like a bad case of Google Translate ...

Hritik Narayan

And apparently the logic has already died on the Mathematics chat room

Balarka Sen

@JohnRennie It'd be a nice poetic line though

0celo7

oops

Balarka Sen

11:20 AM

Step step by
Let the logic die

0celo7

John Rennie

@Blue I don't know how Indian universities work, but in the UK you won't (normally) do research in your first or second years.

Hritik Narayan

@JohnRennie I've been doing computational physics research over the last few months (I just got done with my first year) All I had to do/say was: Hey, this is cool, let's work on this

John Rennie

@0celo7 is that one of these 1080 variants?

Anonymous

@HritikNarayan Heh, wow. Are you a Physics student or Engineering student?

Anonymous

11:24 AM

Which university?

0celo7

@JohnRennie it's a superclocked 1080

Hritik Narayan

@Blue I'm a CS (engineering) guy

John Rennie

@0celo7 I don't know much about the current state of the art in video cards, but according to the benchmarks the 1080 based cards are right up there.

@HritikNarayan what are you doing research on?

0celo7

@JohnRennie Correct

Anonymous

@HritikNarayan Nice. So can you tell me something about how you got started? Did you just go and ask your prof that you want to work in Computational Physics?

0celo7

11:27 AM

I wanted a 1070 but the deal I had lined up fell through, so I just went for a powerhouse

Bernardo Meurer

Heya

0celo7

The price wasn't that much different

@BernardoMeurer Can I put games on a flash drive and then have Steam recognize them?

I don't want to build this damn thing and then wait 5 hours for 100GB of shit to download :P

Bernardo Meurer

@0celo7 Technically yes, but that's a bad idea

Don't do it

Be patient

John Rennie

@0celo7 I tend to take the view that you should either go midrange for something that is cheap and good enough or go for the top end. Getting second best is something you always end up regretting. I would have done the same as you and got a 1080.

Bernardo Meurer

Kevin must have fast internet, no?

0celo7

11:29 AM

Why would it be a bad idea?

Hritik Narayan

@JohnRennie Shock propagation/universal scaling dynamics in perturbed granular gases

0celo7

@BernardoMeurer No

He lives in the country

Bernardo Meurer

@0celo7 Because it's funky, steam screws up sometimes and it's just not how it's meant to work

Alas you can do it

I just wouldn't advise it

0celo7

I wonder what the file size is for TW3

Hritik Narayan

@Blue I told him I wanted to spend my time on something cool/productive and contribute in some way, we finally decided upon that

0celo7

11:30 AM

35GB

That's an hour even on my old amazing internet

Anonymous

@HritikNarayan Was the professor from your CS department or from Physics department?

0celo7

@BernardoMeurer There's no harm in trying, right?

I have a 128GB USB 3 stick

Hritik Narayan

@Blue CS department but he's got a background in physics

Anonymous

@HritikNarayan Interesting. I think I should just gather some courage and ask a prof in the first year itself. I guess it's good to get involved in some interesting research work as soon as possible. :)

Hritik Narayan

@JohnRennie basically bombing a stationary granular system (i.e. like a gas but the particles have size) with a particle in the center and then seeing how the energy distribution or anisotropy or a variety of other quantities scale with time and with the number of dimensions

Anonymous

11:35 AM

@HritikNarayan Is this your LinkedIn profile (linkedin.com/in/hrithik-narayan-9b10a8128/?ppe=1)?

John Rennie

@HritikNarayan I did some quick Googling and got the rough idea, though I'm not sure of the applications. Is this studying the sort of systems used in fluidised beds?

Hritik Narayan

@Blue No I'm not on LinkedIn

@JohnRennie I'm not sure about fluidised beds but apparently this can be used to study accretion disks!

and mushroom clouds

and crater formation

0celo7

what's the economic value of an accretion disk?

@HritikNarayan nuclear technology is evil...

John Rennie

@HritikNarayan Ah OK, relatively dilute systems then i.e. systems where the mean free path is much greater than the particle size. In fluidised beds the mean free path is typically about the same as the particle size.

Slereah

@0celo7 Saving the economy from a gamma ray burst

Hritik Narayan

11:39 AM

Yes!

0celo7

@Slereah I wanted to take Ringstrom's notation and write $\mathsf f$ for the coordinate representaiton of a function

I'm now left wondering what is a coordinate thing and what isn't

it's quite confusing

Slereah

I just use $f(x)$ and $f(p)$

It's clear enough

Loong

@0celo7 We made our first cold primary hydrostatic test yesterday.

Anonymous

@HritikNarayan What were the out-of-syllabus topics you had to learn for your project? Was MATLAB required?

Anonymous

Some of my seniors told me that MATLAB helps a lot in simulations and useful for Physics.

0celo7

11:58 AM

@Loong you do fluid modeling for reactors?

Loong

@0celo7 No, I do radiochemistry and radiation protection.

And the test yesterday was not a model, it was a real reactor.

0celo7

@Loong I'm sure it was just a model

We have people in our lab doing flow modeling on a system of pipes

They have a PET machine that can see turbulence when they put a marker in the fluid

Loong

@0celo7 Ok, then we needed 460 m³ of water to fill our "model". ;-)

0celo7

@Loong that's a lot

You must not be working in Germany

Loong

@0celo7 correct

Slereah

12:06 PM

"James Bradley first tried to measure stellar parallaxes in 1729. The stellar movement proved too insignificant for his telescope, but he instead discovered the aberration of light and the nutation of Earth’s axis"

Does Earth nut a lot

0celo7

@Slereah

Slereah

12:59 PM

👌

user228700

@Justwinbaby Oh, just some movie I was watching to get my mind off things; Adventureland.

John Rennie

@Kaumudi.H Look what is available from my local supermarket this week :-)

user228700

Ayyy :-) Enjoy!

0celo7

@JohnRennie LN2 hurts!

John Rennie

1:15 PM

@0celo7 Burns doesn't it :-)

I'm surprised in this day and age of safety regulations students are given the opportunity to burn themselves with liquid nitrogen. In our day the rules were more ... erm ... relaxed :-)

Just win baby

so you weren't allowed to burn yourselves?

0celo7

@JohnRennie the LN2 reservoir on the spectrometer overflowed spectacularly

I had white shoes for a minute

I'm probably breaking all sorts of rules with my attire

Just win baby

do you wear nikes

Slereah

Did you raise the GDP at least

0celo7

@Slereah I'm trying

@Justwinbaby jordans

Eclipse

Slereah

1:24 PM

poor choice to go into engineering

you should have gone into finances

0celo7

I'm not smart enough for that

Just win baby

An MBA is where the money is at.

Engineering is shit

-_-

As an engineer

1:27 PM

Hm

What is a good definition of a black hole

Bernardo Meurer

Tempted to make racist sexist jokes

Slereah

The standard definition is $\mathcal M \setminus I^-(\mathscr I^+)$

But you can have black holes in non-asymptotically flat spacetimes

user228700

@BernardoMeurer You're doing C.S engineering?

Bernardo Meurer

@Kaumudi.H Computer Engineering

no Science

user228700

Is there a difference b/w the two?

0celo7

1:29 PM

@Slereah On AdS you can do something similar

But beats me how it actually works

Bernardo Meurer

@Kaumudi.H Well Idk what CSEng is

0celo7

there are no good advanced GR monographs

it's just a collection of papers

Bernardo Meurer

But between CS and CEng there's a lot of difference

Slereah

You know what's a good advanced GR monograph?

The big book of spacetime.

Bernardo Meurer

CS is more theoretical. It's basically applied mathematics (to some degree)

0celo7

1:30 PM

eye roll

Just buy it

Bernardo Meurer

CEng is just engineering with a focus on computers

0celo7

@BernardoMeurer I'm on good internet now. Should I download TW3 and put it on a flash drive or not?

user228700

@BernardoMeurer Hmm, I see...

Bernardo Meurer

@0celo7 Sure, try it

user228700

There's a fair chance I'll be taking C.S Engineering in college when I join in a month...

0celo7

1:31 PM

@BernardoMeurer Is there a way to get Steam to recognize it?

Slereah

It's fairly hard to find good stuff on what horizons really are

0celo7

@Kaumudi.H why not do math?

Bernardo Meurer

@Kaumudi.H What is CS Engineering? Do you have a curriculum I can look at?

Slereah

I kinda have to make up definitions

user228700

@BernardoMeurer Hang on...

Bernardo Meurer

1:32 PM

@0celo7 Download it on your current computer

Copy the files to the USB drive

then install steam on the new computer using the same account

Paste files in same location

Bingo

user228700

@Bernardo: Here.

Bernardo Meurer

@Kaumudi.H Ah, okay, generally people call that Informatics Engineering IIRC

It's basically what I do here

But with less maths and physics

Which is good

user228700

Ohh, cool.

0celo7

@BernardoMeurer nice

user228700

@BernardoMeurer Ah, I see...

user228700

1:34 PM

@0celo7 I...uhh, no, I don't think I'm cutout for hardcore math.

Bernardo Meurer

@Kaumudi.H You want less maths than what I do

ask @0celo7

0celo7

@BernardoMeurer your school is highly abnormal

Bernardo Meurer

^

user228700

@BernardoMeurer Even less than you? That's...I see.

0celo7

I don't even know what the point is

You're learning more than any engineer ever needs and less than a mathematician needs

and it's done very strangely

the lectures and homework seem completely disjoint

Bernardo Meurer

1:35 PM

It's cray cray

0celo7

@ACuriousMind I summon thee

Bernardo Meurer

@Kaumudi.H I do a lot of maths

0celo7

@ACuriousMind I am buying TW3 GOTY edition

user228700

@BernardoMeurer I see. Weren't u supposed to be transferring schools?

0celo7

Anything else or will that keep me busy for a while?

Bernardo Meurer

1:36 PM

@0celo7 Remember Chub Analysis, where the classes have nothing to do with the exams lol

@Kaumudi.H I am, moving in 2 weeks or so

@0celo7 War Thunder

Slereah

What does an engineer even need for math

addition

user228700

Nice. Congrats :-)

Slereah

substraction

multiplication

division

user228700

@Bernardo: Where to?

Just win baby

So is Chris White ever coming back? @0celo7

Bernardo Meurer

1:36 PM

@Slereah Multivariable calc, vector calc, boolean algebra, linear algebra

Slereah

Fourier transform, derivatives, some matrices, Laplace transform

0celo7

@Justwinbaby I didn't talk to him about that

Bernardo Meurer

That's it I think

0celo7

Our discussions were purely professional

Bernardo Meurer

Ah, yeah, Fourier transforms

Slereah

1:37 PM

that's about it I think, for the most part

ie first year university math

user228700

@JohnR: I'm making pasta today! :-) ...some version of it.

0celo7

@Slereah in what world are Fourier transforms first year?

Slereah

@0celo7 Not the US

Bernardo Meurer

@Slereah Hmh That won't take a year to teach

0celo7

the $L^2$ stuff is not nice

Just win baby

1:37 PM

\o @Danu

Slereah

Engineers don't learn about that

0celo7

@BernardoMeurer $L^2$ fourier transforms lets go

Slereah

they learn about "here's the formula, it works trust me"

Bernardo Meurer

@0celo7 When I see you in VA

0celo7

chatjax seems to be broken again

@BernardoMeurer in VA?

Bernardo Meurer

1:38 PM

No, wait, TN

0celo7

I thought you were coming to Knox in August

Bernardo Meurer

Yeah

I got confused

0celo7

@BernardoMeurer Kat and I were wondering how you could visit me then

Bernardo Meurer

for a second

0celo7

Don't you have school?

Bernardo Meurer

1:39 PM

I will figure it out

lol

0celo7

Michelle never went to class

She has no concept of what "being in school" means

Slereah

Who is Michelle

Michelle Obama?

0celo7

She wanted me to go to Romania in the middle of the school year

@Slereah Yeah

Slereah

Is Michelle Obama making you go to Romania

3

Remind her she's not the first lady no more

0celo7

@BernardoMeurer Shadow of Mordor is $4

This is how the wallet draining begins

Bernardo Meurer

1:41 PM

@0celo7 Lol

0celo7

ooooo

I forgot about origin and uplay

do they have sales?

@Slereah what is the good dragon age game?

Slereah

First one I liked

I haven't played the others

I hear the second is not

And third is alright too

So 1 and 3 I guess

First dragon age game is a very boring plot well executed

It's the most fill in the blank fantasy plot

Slereah

1:58 PM

Another similar fill in plot game was Fable.

Very basic fantasy plot

Although different tone

0celo7

@Slereah Did you play Dark Souls?

Slereah

I did not

I hear it is good

Bernardo Meurer

DS is supposedly hard af

0celo7

I need to know if I need 1 and 2 to play 3

I could buy all 3

Slereah

It's probably not that difficult

But the MILLENIALS

grumble grumble

0celo7

2:03 PM

That will be enough games probably

Slereah

They don't know what a hard game is

0celo7

I'm a Millenial

Slereah

You don't know what a hard game is

u whippersnapper

Bernardo Meurer

Battletoads is a hard game

Balarka Sen

aaa gaming is one thing i know embarrassingly little about. sad that the room topic has shifted it's focus on that

Abcd

2:11 PM

Can someone please help me with this question?

What I have done: Made vector diagram, found y component of absolute velocity of swimmer, can't solve further.

0celo7

@Slereah I got TW3, Shadow of Mordor, and Ass Creed Unity

Slereah

They be alright game

I hear, anyway

Only got sasso creedo

Abcd

Anyone?

Anonymous

@Abcd $$\vec{v_{s,w}}=\vec{v_s}-\vec{v_w}$$

Abcd

@Blue I know that but that doesn't take me anywhere.

Oh. I think I need to solve it using vector resolution

Anonymous

2:21 PM

First you need to draw a diagram

Abcd

I drew it.

0celo7

@Slereah gyazo.com/362dfc6b42cb551de66f609dd9ab9e69 GDP

Slereah

perfect device to cut up sausages

0celo7

@Slereah yeah I'm engineering nutrient superdense sausages

Anonymous

@Abcd What problem are you facing?

Anonymous

2:28 PM

Can you upload your diagram?

Secret

nautil.us/issue/49/the-absurd/what-is-space

Abcd

@Blue I got y component of Vsw = 10root 2 j hat

sorry I meant y comp. of Vs

@Blue Uploaded the diagram ^^^

Slereah

@0celo7 Possibly satire, but I'm never sure with America

I'm pretty sure most of their research is engineering superdense food

American research :

Abcd

@Blue thanks. I solved it.

Slereah

Dog bless America :,)

DanielSank

2:48 PM

i.imgur.com/21hGTEg.gifv

8

^ Dat Laplace equation

The Dark Side

@DanielSank Wow.

AccidentalFourierTransform

damn, that looks expensive

The Dark Side

Computational Science

General discussion for scicomp.stackexchange.com

The starred messages are from 2011 !!!

Dead chatroom.

Secret

3:06 PM

I don't understand why people love scalars so much but not tensors:

> Scientific articles are about unique discoveries: one article cannot substitute for another. If a serious new journal appeared, scientists would simply request that their university library subscribe to that one as well. If Maxwell was creating three times as many journals as his competition, he would make three times more money.

Profit is JUST a scalar, and a very hollow one

The desire for increasing profit, other than keep that particular market living, I don't see what else it can do to contribute to other areas

Even the second law of thermodynamics are not THAT haste in increasing the entropy of the universe

I sometimes don't really understand what humans are thinking...

> Scientists’ concerns about signing away their copyright were overwhelmed by the convenience of dealing with Pergamon, the shine it gave their work, and the force of Maxwell’s personality. Scientists, it seemed, were largely happy with the wolf they had let in the door.

that old unkickable habit, eh?

The Dark Side

"I sometimes don't really understand what humans are thinking": Bot detected :P

Secret

> Maxwell had transformed the business of publishing, but the day-to-day work of science remained unchanged. Scientists still largely took their work to whichever journal was the best fit for their research area – and Maxwell was happy to publish any
and all research that his editors deemed sufficiently rigorous. In the mid-1970s, though, publishers began to meddle with the practice of science itself, starting down a path that would lock scientists’ careers into the publishing system, and impose the business’s own standards on the direction of research. One journal became the symbol of this…

It seems to be ok at the start with this explosive growth in the publishing industry, but the inherent problems seemed to surface in the mid 1970, as business tries to control research and distort science

> Cell (now owned by Elsevier) was a journal started by Massachusetts Institute of Technology (MIT) to showcase the newly ascendant field of molecular biology. It was edited a young biologist named Ben Lewin, who approached his work with an intense, almost literary bent.
Lewin prized long, rigorous papers that answered big questions – often representing years of research that would have yielded multiple papers in other venues – and, breaking with the idea that journals were passive instruments to communicate science, he rejected far more papers than he published.

This is where the problem is. Focusing mostly on the blockbuster researches, and people are ignoring the small results that might be potentially more important because they are often smoking guns to the big picture

I am glad that academia have at least partially try to address this problem by having journals that publishes negative and no go results, but I am not sure if that is sufficient

> He realised scientists are very vain, and wanted to be part of this selective members club

ack, pride...

The modern equivalent of Cell, I guess is Nature

The Dark Side

3:24 PM

Secret

(what? did I accidentally broke a chat rule?)

The Dark Side

No. I'm enjoying the monologue :P

Please carry on.

Secret

and I have heard in some conferences that some of the editors of nature have a slight preference of certain type of groundbreaking sounding results. For example, ever noticed that whenever nature post something related to thermodynamics and cooling, the titles are often so catchy to the point of being exeggerated?

something like time crystals, apparent violations of the second law of thermodynamics

Well, they suggests, that it might be largely due to the preference of one of the editors

(but again, it is best to consider that as rumor at this stage, until more info flood in)

> Suddenly, where you published became immensely important. Other editors took a similarly activist approach in the hopes of replicating Cell’s success. Publishers also adopted a metric called “impact factor,” invented in the 1960s by Eugene Garfield, a librarian and linguist, as a rough calculation of how often papers in a given journal are cited in other papers. For publishers, it became a way to rank and advertise the scientific reach of their products. The new-look journals, with their emphasis on big results, shot to the top of these new rankings, and scientists who published in “high-…

NB, when I do my literature reviews, impact factor is often something I ignore because it is just a number

Many of my peers, mainstream professors included, said there are very crappy papers in prestigious journals, and there are good ones in the not so popular ones

0celo7

@DanielSank you mean Helmholz?

Secret

> It is difficult to overstate how much power a journal editor now had to shape a scientist’s career and the direction of science itself. “Young people tell me all the time, ‘If I don’t publish in CNS [a common acronym for Cell/Nature/Science, the most prestigious journals in biology], I won’t get a job,” says Schekman. He compared the pursuit of high-impact publications to an incentive system as rotten as banking bonuses. “They have a very big influence on where science goes,” he said.

and that, in some sense, is not good. Using the analogy of a state passing its policies, unless the state is not tipped towards one side too much, in a long enough period, it is going to skew things. But we are doing science, not hocus pocus, we don't want to be skewed cause out job is to understand how reality works

and NOT to fit our models to some ideals we found nice

> These days, given a choice of projects, a scientist will almost always reject both the prosaic work of confirming or disproving past studies, and the decades-long pursuit of a risky “moonshot”, in favour of a middle ground: a topic that is popular with editors and likely to yield regular publications

The Dark Side

3:46 PM

37

Q: Why would society not cremate its dead in a world where necromancy is possible?

Necromancy is a type of magic that forces a soul back into a body after it has been killed. Through a dark ritual, the soul is forcefully removed from its eternal rest in the afterlife and is anchored back into the mortal world. The soul is under the complete control of the necromancer, and is a ...

magic

Secret

Well, that's most of the condensed matter, right? But I think that should be fine since condensed matter is so complex that most of its findings are often in the middle ground

but if we just stuck in the middle ground (or too much for the moon shot, or just focus on verifying past results), then it is not good

The Dark Side

86

A: Why would society not cremate its dead in a world where necromancy is possible?

Because there's necromancy and there's holy resurrection. Necromancy is evil, holy resurrection allows the deceased to return to service in the name of god, their cries of joy at being returned to this service sending shivers through anyone hearing them, utterly unlike the cries of torment from ...

:: Sigh ::

Secret

NB computer is rebooting soon to install windows update, will be back on soon

Computational Science

Transcript for