The h Bar - 2017-12-13 (page 2 of 5)

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7:08 AM

0

Q: Ignorance towards new comers

I am a newbie here in stack exchange. This site is very informative. So, I tried to contribute with the little knowledge I have. So, I posted this answer after reading the question, all the other answers and the comments of the OP. I really don't know where I've done wrong. But, I am downvoted....

discussion answers down-votes

Look, here's the thing. We had a chat comment, like a week ago, that was just the word "homo" repeated several times. It was removed and the poster was asked not to repeat it. Instead we are having a debate about its appropriateness. Troll level: expert.

@rob heheheh

It's not troll level... this is just what happens when a bunch of people who are trained to reduce everything to first principles discuss internet chat ethics.

I wonder when we'll reduce insult policy to the standard model.

Anonymous

@DanielSank What is the standard model?

@Blue It's more or less the Lagrangian that describes everything except gravity.

Anonymous

Lol

7:15 AM

mmm

Maybe it's insults that are the missing step from the current Standard Model to Theory Of Everything

Anonymous

I'd advocate that, totally.

Anonymous

We're a physics room after all and we should think laugically :P

@rob Are you proposing an insult field?

physics is an insult to itself

Anonymous

7:16 AM

Insultons.

so it doesn't matter

Ah, @dmckee, welcome to our discussion of particle physics and insults!

@SkyWalker hi

@SkyWalker re your question in the Meta, only one person has downvoted your answer so I wouldn't worry too much about it.

One downvote doesn't constitute mass condemnation! :-)

I have entered here with my MSE reputations.

As you have said, it is true. But, one needs motivation to write. People should understand that correct answers should be left alone if not appreciated.

Uh, ooolb got banned for 7 days

Why?

I see no rational reason for this ban

7:29 AM

People gets banned here ?

@JohnRennie ?

@SkyWalker this is a long standing issue and you'd have to read back through pages and pages of chat logs to understand it. But no, as a rule we don't often ban people from the chat. Don't worry about it.

Thank you for the information, sir. Nice talking to you

My first two hats are both secret hats!
(now if only I knew how I got them :-)

Can anyone inform me if my answer is correct ?

user228700

7:44 AM

@JohnRennie No :-/ I've got another one on Monday, after which I will pack in a hurry and head home for 10 days! :-)

user228700

@JohnRennie :-/ Well, that sucks.

user228700

@BalarkaSen Tf?! When?

A long time ago

@Kaumudi.H well, the thing is I was a swot/nerd and still am :-)

a bunch of us trolled the mod because he did it.

Anonymous

7:47 AM

@JohnRennie Being called a swot is honorable :D

user228700

@JohnRennie True enough. Still, it wasn't very nice of the other ~~pests~~ children to insult you using that term :-/

user228700

@BalarkaSen x'D Good. This was in the Math chatroom, was it?

yep

user228700

Ah.

@Kaumudi.H children are pretty nasty animals. Their only good point is that they sometimes grow up into nice people :-)

7:48 AM

I have been banned on numerous occasions, and 9/10 of them don't have logical backups.

user228700

I was called "cow odeh mudi" all through primary school.

user228700

@JohnRennie :-) Yep!

user228700

It translates to "Cow's hair" from Tamil.

user228700

@BalarkaSen Hmm :-/

How appropriate, you fight like a cow!

user228700

7:50 AM

...huh? x'D

the key to overcome bullying is to embrace it

I think the key thing to understand about bullying is that the bully/bullies have spotted you have low self esteem and they are attacking that vulnerability.

user228700

Hmm, well, I overcame it by crying all through the day-so much so that I needed to be seated in a one-seater bench all by myself near the teacher, while the rest of the kids sat at desks shaped like trapezoids.

I rarely got bullied despite (a) being a nerd and (b) being rubbish at sport because I've never had a self esteem problem.

Captain Bohemian

I was low self-esteem when in primary and junior high school but become high self-esteem since senior high school.

7:54 AM

That made it boring for the bullies because I frequently failed to realise I was being insulted, and even when I did notice I didn't care.

@0celo7 "Let us assume that $\phi$ and $\psi$ are continuously differentiable and that $\phi(x)$ and $\psi(x)$ tend to zero as $x$ tends to $\pm \infty$"

@0celo7 what kind of assumption is that for $L^2$!

user228700

@JohnRennie Hahaha, nice :-)

@Kaumudi.H different people react in different ways, and there's no right way to react.

if i get bullied for low self esteem, i point out i have even lower self esteem

"X and P are symmetric operators on certain dense subspaces of L2(R) (the space of
functions for which the proposition is proved)"

O that I guess

user228700

7:56 AM

@BalarkaSen Troll yourself in the face of trolling. 10/10 works.

Anonymous

I used to get bullied a lot in primary school (I don't think it was self-esteem issues...just that I liked to keep to myself and they liked to disturb the quiet kids). But then it stopped after I literally bit one of them and he had to be hospitalized for a week. After that incident no one used to bother me. I was a pretty awkward kid back then. :P

@Kaumudi It does, it unnerves them

@Blue Excellent :-)

user228700

@Blue Oh, my God, wow! x'D

My younger brother never got bullied because he always fought back even if the other boy was twice his size. Yes he got beaten up a few times, but the bullies quickly realised that they'd get hurt too!

Captain Bohemian

7:58 AM

@Blue I was not only low self-esteem but also very quiet in primary school. I was also often sick then, so boys liked to kick me very much.

it's kind of sad you have to teach bullies how bullying is done

I'm not built for fisticuffs so I had to take a route based on diplomacy

I never got bullied because I pretty much ensured that my classmates never failed. :P

And basically no one at my school ever faced bullying. So, there's that.

Possibly got to do with the fact that my primary and secondary education was in a small town and so almost everyone knew everyone else. So, you can't get away with bullying without your parents knowing

Captain Bohemian

I am an unusual person, so my classmates liked to bully me in primary and secondary schools.

I think differently from most people.

user228700

8:15 AM

@JohnR: Still around?

Yes, I'll be here for hours yet.

Though my ability to help with ISE is probably minimal!

But if it's moral support you want (note I'm better at immoral support) then I'm around.

user228700

Lol. No, help me choose:

user228700

zomato.com/kochi/the-burger-junction-kakkanad/order

One of each!

user228700

-.-

8:18 AM

Ha! anagrams are fun. A guy just pointed out that "Winter Bash= Er, win BS hat"

2

user228700

Oh, wow!

(He apparently pointed out last year but I had missed that.)

@Kaumudi.H I would get 2 x veg cheese fries ...

user228700

That wouldn't be brunch!

Isn't there anywhere nearby you can buy some bread?

user228700

8:21 AM

@JohnRennie :-/ Why would I do that?

I like bread!

Buy something spicy to go with it and that's a great meal.

probably cheaper than buying from the burger bar as well

user228700

...I don't like bread anymore.

Ah ...

user228700

Really? Un-toasted, cold bread?

Well, no, by bread I was thinking of Indian breads.

Though in the UK we can get bread with cheese in, or olives in, etc and I have been known to munch my way through a whole loaf of that type of bread.

user228700

8:24 AM

Oh, my God, wow.

This sort of thing

user228700

Of course I still love chapati, roti, etc.!

user228700

No place nearby that sells it separately though.

@Kaumudi.H Huh. Weird. Don't you have canteens/eating places in your college campus?

Fries it is then! Fries are always good!

8:26 AM

@JohnRennie Fries are unhealthy.

user228700

@Sid All absolutely terrible. Plus, today's a holiday and I don't exactly fancy walking into the canteen mostly populated by seniors, wearing sweats.

@Sid rubbish! I've been eating fried for decades and they haven't done me any harm.

user228700

@JohnRennie Wow, looks great!

I'll post you one if you want. Of course, after a week in the post it won't be quite so appetising ... :-)

user228700

:-)

8:29 AM

BTW the snow has all gone now.

user228700

Cool!

@dmckee @DavidZ Is there any extra benefit in trying to not just analyse the statistics of particle collision to reconstruct decay channel information, but also analysing things like correlations between decay channels and network connectivity of each channel's occurrence, patterns and frequencies in the data.

Another way to phrase the question: Are high energy physics contain dynamics that resembles those of complex system in that they can contain some network structure which help us to better elucidate information from it to inform the theory on what the model should be like?

user228700

Eh, Zomato sucks. I think I'll order from Dominoes instead...

Pizza! :-)

@Kaumudi.H Well, you need to gather courage if you want the chapati...

8:33 AM

As far I am aware, all data analysis methods in particle physics are statistical, thus I am not very sure whether large scale correlations in the decay patterns in the data were being investigated before

Also, I guess we are lucky that our seniors are far more friendly. I have even had lunch with a bunch of seniors..

user228700

@JohnR: Which one:

user228700

user image

user228700

Or:

user228700

user image

user228700

8:36 AM

@Sid Wow :-o

user228700

(Very broke, can only afford one topping at most :-P)

user228700

@JohnR: Quick!!

One of each (but you knew I was going to say that :-)

user228700

-.- Jooooohn.

Is that olives on the cheey classic?

user228700

8:37 AM

Yep!

I like olives!

I'd go for the olives

user228700

:-) So do I, but mozzarella...

Isn't just cheese a little bland?

user228700

Hmm :-/

I'd get cheese if I was going to add some stuff of my own e.g. some chopped chillis

8:39 AM

@JohnRennie ...so far. Fries will mess with your body big time if you eat too much of them

user228700

Ah, well, that's certainly not happening!

@Sid define too much

@Kaumudi.H then I would get the olives.

@JohnRennie Like everyday

Mozzarella has a lovely gooey texture, but I don't think it tastes of very much.

@Sid fries are just fat and carbohydrate and neither of those are harmful. Yes, if you eat only fries or if you eat huge amounts of fries that's going to be bad for you, but there's nothing bad in eating an appropriate amount of fries every day if that's what you like.

Though I suspect you'd quickly get bored with fries.

@Kaumudi.H are there no Indian themed pizzas?

@JohnRennie They don't agree with you

8:43 AM

i.e. pizzas with a Indian based topping?

user228700

user image

@Sid read the article carefully. All the article says is that saturated fats are bad for (though even that is contentious). In the UK fries are invariably cooked in unsaturated fat so the article doesn't apply.

user228700

AGHHH.

Bummer :-(

Fries it is then :-)

It's fate

user228700

Nope, I will call and order!

8:46 AM

@EmilioPisanty So, after I told him about your answer, he said therefore quantum exhibits indeterminacy, in that there is no true randomness, but that the process involved can get arbitrarily random. He then elaborate that in saying that (using your answer) it is the observation that is indeterministic despite the state evolves deterministically. He also found the careful treatment of the classical limit described by you interesting. Therefore he is satisfied with the answers

user228700

@JohnRennie Dominoes offers something called the "Shahi Paneer Pizza" but it's not very good.

Pizza with paneer? That would be a bit bland without some extra spicing ...

user228700

Yes :-/ It was.

user228700

OK, I will order in two hours or so, I think-I wolfed down one packet of chocolate cookies around 2 hours ago and I'm not sufficiently hungry yet for:

Oooooooooooooooooooooooooooooooooooooooooooooooooooohhh :-)

Shahi paneer pizza by crazy4veggie.com

user228700

8:48 AM

user image

Looks good to me :-)

Anonymous

I've heard people say that traditional Italian pizza is quite different from the ones sold by Dominoes, Pizza Hut, etc. It's like this. Anyone here tried such a pizza before?

He then made a footnote saying that "physicists tend made the mistake by equating indeterminacy (the measurement/observation produces an indeterministic outcome) with indeterminable (the idea that even if there is a process that is deterministic, it is fundamentally unknowable and inaccessible to all our attempt in interrogating the system (as if the probability distribution does not even exist))"

You do realise I'm hungry now, and it's four hours until my lunchtime!!!

Anonymous

The pizza bread looks more like a naan

Anonymous

8:49 AM

:P

I then told him that actually the majority of physicists don't think quantum mechanics is indeterminable.

user228700

@JohnRennie :-( Sorry!

@Blue deep pan pizzas were invented in the US. Traditional Italian pizza is always very thin and very crispy.

user228700

To be fair, your lunches are richer and better than all my meals combined!

Anonymous

@JohnRennie I see. I never had a traditional Italian pizza then. Don't know where to get it. I might try to make it at home, someday :D

8:51 AM

@Kaumudi.H you get the wrong impression because I only post the glamorous lunches. Yesterday was a risotto with potato. In fact I'll be hving the same today because I have to use up the rest of the potatoes.

Anonymous

Are those found in UK?

user228700

@JohnRennie Hey, that's still better than all my meals combined, of yesterday! (Certainly not today, haha)

@Blue yes. The UK is really good for buying food these days. You can buy Italian style pizza from the supermarket.

But I have to say I like deep pan pizza.

It may not be traditional, but hey I'm the one eating it and I'll eat what I like! :-)

Anonymous

Hehe :)

@Kaumudi.H I might have pizza tomorrow ... I have a (deep pan) cheese pizza in the freezer.

user228700

8:55 AM

Cool! :-)

This will probably sound awful, but I like deep pan pizza with a curry sauce of some form poured over it.

Chole for example. Or sambar, though I'd put some cream in the sambar.

user228700

I can confirm that it does sound awful.

You might love it. You won't know unless you try it :-)

Mithrandir24601

@JohnRennie having done all that traveling, I don't know if I should be having breakfast (according to my watch), lunch (I've already had breakfast) or dinner (it should be 5pm now, right?)

Anonymous

@Mithrandir24601 Settle for lunch (something midway)

user228700

9:04 AM

@JohnRennie There's no way I'm pouring sambaar all over my pizza!!

Sambaar and cream ...

The hot sambaar mixes with the cheese to form a rich gooey sauce that then soaks into the bread base. It is lovely :-)

Mithrandir24601

@Blue but what will I do at UK lunchtime then?

user228700

Oh, God...

It is indeed a divine meal :-)

Anonymous

@Mithrandir24601 Have dinner and go to sleep :P You must be tired today

user228700

9:06 AM

I've only finished 1.5 modules till now :-/ I should probably finish at least another 3 before I order...

Mithrandir24601

Although at this rate, it'll be UK lunchtime by the time I get home anyway

@Kaumudi.H your desperate attempts to avoid revision by discussing food here are going well :-)

Mithrandir24601

@Blue then I'll just be propagating the jet-lag. Also, I have things on this afternoon

user228700

@JohnRennie Appreciation of all kinds are accepted, so thanks! :-P

@Kaumudi.H any time :-) And now I think a coffee is in order to stave off the hunger pangs.

user228700

9:09 AM

:-)

@JohnRennie I didn't know that. I thought fries=French fries everywhere

In the UK we call fries chips.

But that's irrelevant as I'd guess fries/chips are cooked with unsaturated fat pretty much everywhere.

Huh. Then, that article is fake news!

Yes

A randomly Googled article on the Internet is untrustworthy. Who would have thought it? :-)

@JohnRennie the site seemed trustworthy enough to me. :/

user228700

9:26 AM

2 modules down, 4 to go!

user228700

:-(

Courage, mon brave

user228700

Yes, yes.

@Secret That sounds like he didn't get it much, but explanation by proxy is very much not the way to go. I would hope that he has this conversation in person with someone who actually works in QM, ideally foundations of QM.

9:41 AM

yeah, I guess he is on his own now. Hopefully he will encounter some quantum foundation people some time in the future

9:56 AM

Just tell him to read an actual book

Like "The Philosophy of Quantum Mechanics", by Max Jammer

I hope he likes model theory

Anonymous

@Slereah Is that a physics or philosophy book?

It's both

Hence the title

It's about QM interpretations

still fairly math heavy though

Anonymous

@Slereah Okay, that sounds interesting

user228700

Oh, my God, what is with these restaurants?! None of them are open!!!

user228700

@JohnR: :'-(

10:11 AM

@Kaumudi.H huh?

user228700

Didn't you see my message?

user228700

3 mins ago, by Kaumudi. H

Oh, my God, what is with these restaurants?! None of them are open!!!

Isn't this a physics discussion chat ?

Yes, the huh? was me wondering why none of the restaurants were open.

user228700

@SkyWalker x'D Hi! You must be new here!

10:13 AM

@SkyWalker we do chat about physics, but we chat about lots of other stuff as well :-)

I'm new here. Yes. ^_^

@Blue Everett's thesis is actually fairly interesting on the topic of quantum measurement, too

user228700

@JohnRennie I dunno! :'-(

Anonymous

@Slereah I'll surely check it out. Thank you!

Topics vary from restaurant to quantum measurements. Oh my....

Anonymous

10:14 AM

@SkyWalker That's how a real physicists' life looks ;)

@Kaumudi.H you need to find yourself a cafe within cycling distance ...

user228700

@SkyWalker At a certain point, the name of this room was changed, just for a bit, to "The h Barbecue" x'D

Anonymous

(Most of us here aren't professional physicists though)

If you want a good book on GR epistemology I also advise "The philosophy of spacetime" by Reichenbach

Althouh it's a fairly old book

1927

I think a more modern treatment is "The ontology of spacetime" but I haven't read it

Anonymous

@Slereah Which book would you advice for GR to somebody who just knows undergrad level QM? I've heard people say Zee is a good introduction to the basics. BTW is Reichenbach's book beginner level?

user228700

10:17 AM

@JohnRennie :-( Well, there are none!

I actually asked any one of you to check my answer if it is correct. I'll edit it if needed.

Anonymous

(Although, sure QM isn't directly related to GR)

Anonymous

But GR comes after QM in most physics courses

@Blue Zee is good I hear

The book I usually recommend is Callahan

amazon.com/…

Anonymous

@Slereah Cool. I'll check :)

10:18 AM

It doesn't contain that much GR but what it covers, it covers in details

@SkyWalker your answer looks fine, but it doesn't really answer the question. The person asking the question is being confused because his book isn't clear on its terminology. You're correctly describing the gauge freedom in potential energy, but that isn't really what the question is asking.

If you look at the other answer that seems to me better even though it is less detailed than your answer, because it more directly addresses what the question is asking.

@JohnRennie I see. I actually added the answer to the main question briefly in the end of it.

Thank you for your review.

Anyone here follow cricket ?

No I'm not much into entomology

user228700

@JohnR: How does "Class Veggie Burger Ka Baap and a Double layer veggie cheese sandwich sound?

Anonymous

@SkyWalker I used to do, a bit. From where are you (country)?

10:30 AM

@Kaumudi.H sounds good to me :-)

Put some meat in there and you've got yourself a lunch

(bit lacking in fries though)

@Blue India

Anonymous

@Slereah She's vegetarian :P

Anonymous

@SkyWalker Me too

Anonymous

10:30 AM

Lots of Indians here XD

user228700

@JohnRennie :-)

user228700

@JohnRennie No, they give some fries with the burger!! :-D

@Blue First problem to fix!

user228700

God, I have never been more excited about food.

Anonymous

@Slereah LOL

10:31 AM

@Kaumudi.H BOOM! :-)

user228700

@Slereah First? ._.

I think the only photo of me here was me eating a reindeer burger

user228700

Reindeer? An actual reindeer?!

o it's gone

Because I put it in my dropbox

Well, not a whole reindeer

Just part of one

(it was in Lapland)

@Kaumudi.H a whole reindeer in a very large bread roll :-)

10:33 AM

Lapland has a lot of touristy things

I've eaten reindeer. It tasted like venison to me ...

Lots of reindeer and husky stuff

user228700

@Slereah It is :-/

No husky burger, though

@Blue Who is she here ?

Anonymous

10:33 AM

Mar 10 '16 at 16:44, by Slereah

user image

user228700

@SkyWalker Me :-P

Anonymous

Damn, @Slereah....you took it down!

user228700

@JohnRennie Wait, you either love venison or hate it, if I remember correctly. Which one is it?

@Kaumudi.H venison is very nice

@Kaumudi.H Oh !

10:34 AM

Like beef but with a richer taste

user228700

@JohnRennie Ah, you love it, then :-)

user image

user228700

Whoa, the background is very nice!

user228700

@Slereah So that's what you look like! x'D I've always pictured you as that old guy in your previous Avatar, the one standing in front of a red barn.

I'm afraid I am not Leonard J. Crabs

somethingawful.com/hosted/crabs

10:37 AM

i see a Frenchman eating a burger

Anonymous

Downloaded and saved @Slereah :P

Anonymous

That looks photoshopped!!!

Anonymous

But well, it isn't

Anonymous

:D

angelfire.com/pro/leonardjcrabs

user image

there it is

user228700

10:38 AM

^ Yes!

user228700

You're telling me you're not this guy? :-P

Leonard J. Crabs was the totally non-fictional lawyer that Something Awful used to respond to legal threats against them

Anonymous

@Kaumudi.H Doesn't this guy look too old to be a PhD student? :P

So it turns out running a comedy website you get a lot of them

For SLANDER

user228700

@Blue See, at that point, I had no idea what Slereah was doing, even, so, I just assumed that he was a really old Physics prof. or something :-P

Anonymous

10:40 AM

Hehe

Never trust the internet

I might be a robot for all you know

user228700

There's always that possibility.

I'm not 100% sure who the photo of Leonard J. Crabs is of

I'm guessing some random photo on the late 90's internet

I wonder if I am going to try to get a hat this year or not

@Blue you done with exams finally?

Anonymous

Tomorrow is the last test

10:48 AM

aha

Anonymous

Then I'm free!

Anonymous

We need to plan how to go about with math

i don't like planning

just do whatever

the dynamics idea was p good

Anonymous

@BalarkaSen Mhm, so I'm thinking of doing ODE/Dynamics on one side and LA revision/FA on another side. That'll be a good way to spend the approximately half a month of holidays :)

that sounds good

user228700

10:53 AM

Aziz Ansari's Saris Make A Great Holiday Gift

user228700

I love this man.

Flick I have forgotten how to consistently define orientation on a manifold

@BalarkaSen global $n$-form section?

or do you mean the positive jacobian for every coordinate chart overlap

Well I guess that's more orientable

right, that's the global way to do it. what I have is a manifold and orientation defined at a point. I want to push this orientation to all of the manifold

I am thinking I want to join other points on the manifold to that basepoint by a path

and then push orientations along a path

consistency would then be asking that the paths don't reverse orientation

Yeah if it has a connection you can just parallel transport the orientation

10:56 AM

Yeah something like that

Not sure how you do it without a connection

I have an algebro topological idea. I'll try to write an answer

alge-bro

algebra brofist

I mean, any manifold can have a connection, so I guess you can just define a random one and then parallel transport it

It will always define an orientation anyway

Well, what I want to prove is this

I don't think your idea helps me understand the tubular neighborhood of the path

But it should work, yeah

orientation reversing paths should always have moebius strip neighborhoods on a surface, being the point

I s'ppose so

11:51 AM

@JohnRennie Why does your profile picture show some strange colours on it when I click it from here?

@Abcd it's a hat

That's not a hat!

A solar system is not a hat

Anonymous

Depends on your definition of hat :D

@JohnRennie Nice :).

user image

Anonymous

11:55 AM

@JohnRennie Did you answer some cosmology question recently? I think that hat is exclusive to the PSE site...dunno

Anonymous

They did not give any reason, right? (secret hat)

Anonymous

stackoverflow.com/users/22656/jon-skeet#winter-bash

Anonymous

Uh, no. Even Jon Skeet got something similar

Anonymous

So it's not exclusive to PSE :P

Anonymous

Marc Gravell ♦, Forest of Dean, United Kingdom

705k 174 1964 2401

c# .net linq protobuf-net serialization asp.net sql

user228700

11:59 AM

@JohnR: First hat, eh? :-) Nice!

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