The h Bar

Bernardo Meurer

12:04 AM

@ACuriousMind Make me happy

Mozibur Ullah

12:29 AM

@BernardoMeurer: Hi, what makes you happy?

Bernardo Meurer

@MoziburUllah Alcohol, tobacco, some soft samba/jazz in Rio, food, playing cards, family dinners, being at the beach, trees, warm clothing from the drier, women, buying audio equipment

Those come to mind

Mozibur Ullah

@BernardoMeurer: that all sounds good - is @curiousmind handing out all those goodies? Looks like he's a man to know...!

Bernardo Meurer

@MoziburUllah He could definitely get me a majority of those

ACuriousMind

@BernardoMeurer I count 5-6, so that's technically true ;) However all that would be much easier if you weren't half the globe away :P

Bernardo Meurer

@ACuriousMind That is true

Mozibur Ullah

12:39 AM

virtual goodies aren't really goodies at all.

unlike virtual particles.

Bernardo Meurer

Not true, vide bitcoins

Mozibur Ullah

Whats all the fuss with bitcoins? Its just another speculative storm in a teapot.

Bernardo Meurer

@MoziburUllah Say that to all the money I made this month :P

Mozibur Ullah

Hmm, are you handing out goodies too?

Bernardo Meurer

Financed the shipment of my stuff from Lisbon here to Santa Barbara

Nope

Mozibur Ullah

12:40 AM

Make me happy Me Bernardo!

Mr Bernado!

Seriously?

Bernardo Meurer

If I could I would

I can only make anyone happy after my third beer

before that I'm a complete bum

Mozibur Ullah

Well, have three beers on me...

Its the h-bar after all.

@ACuriousMind: Hi, whats life like as a moderator? Would you recommend it to anyone?

@rob: Hi dude!

rob

@MoziburUllah Greetings

Bernardo Meurer

@rob hai

rob

@BernardoMeurer Salutations

Bernardo Meurer

12:46 AM

@rob Magentizations my fellow kumquat

Mozibur Ullah

Bon jour except its bon nuit where I am.

It would be more bon nuit if the bartender would turn up.

Is this really a h bar?

ACuriousMind

@MoziburUllah It's like life as an ordinary user, just with a bit more abuse hurled at you ;) More seriously, I'd only recommend it if you enjoy tasks like going through the review queues.

2

Mozibur Ullah

Now we all turn magenta...

rob

Jan 14 at 15:36, by rob

We're going to have to rename the place "the h bar and grill" if the food discussions become any more prominent.

11

Q: Choosing the name of the chat room

The name of the chat room was recently changed to the h bar(becue) as a joke because of the multiple posts about food made by the more rapscallionary members of the room. I've seen a few rather terse posts suggesting that not everyone is happy with this, so maybe we should try and arrive at a co...

Mozibur Ullah

@ACuriousMind: I can't say that I'm too fond of abuse - so the moderators life ain't for me; glad you've taken it on ;).

I'm happy with h-bar - its cool. I just want it to live up to its name. And not by serving out h's.

ACuriousMind

12:52 AM

We tried serving digital drinks once but they had all sorts of weird bits in them :P

Mozibur Ullah

@ACuriousMind: I had to read that twice before I got the pun (groan).

Is there an emoticon for (groan)?

ACuriousMind

Not that I've seen it, but I'm not an expert on these

Mozibur Ullah

Me neither.

0celo7

1:11 AM

🙄

😒

Mozibur Ullah

@ocelo7: Hi! How do you get pictures for your emoticons? teach us your sorcery...

ACuriousMind

I think he's just using his phone

Mozibur Ullah

ok, phone witchery!

0celo7

@ACuriousMind Do you have proof of that claim

enumaris

hmmm

Mozibur Ullah

1:18 AM

@ocelo7: the proofs in the magentasition. When everything goes purple.

Mozibur Ullah

1:35 AM

I need a phone upgrade 'cos I can't get those emoticons on my phone; got to do it old-skool.

Silence reigns in the h-bar as the bars outta the purple juice.

ACuriousMind

Well, you found it in a rather quiet hour. Also, what's with the purple?

Mozibur Ullah

1:53 AM

@ACuriousMind: ask @BernardoMeurer, he started it with 'Magentizations my fellow kumquat'; maybe it was a typo and he was talking about magnets rather than magenta (which is a kind of purplish-violet colour).

Bernardo Meurer

I just wanted a fancy greeting to use, but since I didn't know any I made one up

Magenta is a fancy color

So it was only natural what followed

Mozibur Ullah

2:06 AM

@BernardoMeurer: I like magenta - it reminds me of my commodore 64 days. Before that I thought of it as violet or purple.

Wasn't there an X-Man character named after magenta too?

Bernardo Meurer

@MoziburUllah Interesting, I had a dream last night I found an Amiga computer on the streets and got it working

Mozibur Ullah

Yeah, I bought an Amiga but by then I was deep into mathematics so computers had lost their gloss by then...it wasn't the same as the Commodore 64 and its eight sprites and tinkering with machine code; LDA - load accumator!

BNE - Branch on negative!

Its funny how memory works - I find it difficult to remember my mobile phone number; back then I was soaking up numbers and acronyms like crazy.

bolbteppa

3:41 AM

@ACuriousMind in this lecture cosmolearning.org/video-lectures/… the guy goes through the beginning of the Polchinski/Weinberg spinor appendix, some useful comments

DanielSank

4:17 AM

Hi, everybody.

enumaris

hmmm

The Karate Kid?

Secret

4:48 AM

Human beings are addicted to correcting others mistakes:

Given a sentence, if they spot something wrong, they often cannot resist the urge to correct something wrong

This leads to a highly effective but risky technique of question asking:

Bernardo Meurer

@Secret You have term repetition of "something wrong" here

Secret

?

bolbteppa

In a math/physics lecture if you correct a mistake you get a thank you, sometimes even gifts, it's encouraged apparently

Secret

O I see, then make the change of the 2nd instance of "something wrong" into "said wrong thing"

Bernardo Meurer

@Secret Uhum, or the first usage can become "if they spot a mistake"

Secret

4:54 AM

hmm, that works too

Bernardo Meurer

But mostly I was just trying to be obnoxious and find a mistake to correct :P

Secret

(cont.)
Given a question Q, you deliberately make the part you are not sure of A an assertive statement E. Thus Q goes from Q(A) to Q(E). Then provided you don't get a reputation of trolling or exploiting people like that (this is the risky part as you are literally gambling with your whole future whenever you ask questions like that), then in a short period of time, there will exist at least one person correcting you, thus you get your answer to your question in this roundabout fashion.

Obviously, for me, because I am clumsy, I made my mistakes in my questions due to lack of awareness

Anonymous

0

Q: Is it possible to locate the Fermi level (in a double doped semiconductor) without knowing the intrinsic Fermi level?

Suppose phosphorus ($\require{mhchem}\ce{P}$) is introduced into $\require{mhchem}\ce{p-Si}$. At a given temperature (say at room temperature $300K$) is it possible to find the location of the Fermi level, if I don't know the intrinsic Fermi level position? The information I have is: The rati...

solid-state-physics semiconductor-physics fermi-energy

Anonymous

In case someone can help ^

Secret

Put it simply, there exists people in this world who ask other people question by provoking their urge to correct others, thus indirectly getting the answer as a result, when normally the response rate of such question will be low

Conclusion: I suspect aliens and AI will be better than us humans in terms of efficiency of certain things because they will not be psychologically exploited that easily

Actually, now I am starting to wonder, whether cranks bullshit their stuff is actually trying to get people to challenge their beliefs, and thus constitute a notion of trolling :?

Bernardo Meurer

5:01 AM

@Secret I'm convinced you're either an Alien or AI

ooolb

secret is my spirit animal

enumaris

5:14 AM

ahhh

Mozibur Ullah

Some people just enjoy stirring things up.

As long as its done with some wit and panache I don't mind.

Mozibur Ullah

5:30 AM

@ooolb: Hi, is your spirit animal tame, wild or is it a secret?

ooolb

@MoziburUllah it's not a secret

it's @Secret

I was being reverse ironic don't reply saying that's what you meant.

or I'll kms

Mozibur Ullah

kms?

ooolb

kool my senses

with this

Mozibur Ullah

Ah, ok; I alsways wondered what drinking the Kool-Aid was about!

ooolb

refreshing

Mozibur Ullah

5:38 AM

I've invented a new internet acronym: iksa - it kicks some ass!

It looks refreshing.

ooolb

especially on ice

Mozibur Ullah

I thought raspberries were a kind of reddish colour?

ooolb

crappy design

Mozibur Ullah

I've seen better emojis.

Blue is a refreshing colour tho.

ooolb

@MoziburUllah you have my attention.

Mozibur Ullah

5:43 AM

Why?! What did I say?

@JohnRennie: Hi, how you doing?

John Rennie

Morning

Mozibur Ullah

And top of the mornng to you sah!

ooolb

@MoziburUllah you said blue is refreshing and I think that's hot.

(no homo)

Mozibur Ullah

Hot, blue and refreshing - now that a sweet mix.

ooolb

@MoziburUllah that's literally me irl

Mozibur Ullah

5:48 AM

irl?

Anonymous

@ooolb I'm pleased.

ooolb

@Blue you're Blue not blue.

learn the difference.

Anonymous

7 mins ago, by Mozibur Ullah

Blue is a refreshing colour tho.

Anonymous

^^

ooolb

colours can't do physics.

oh wait...

:p

Mozibur Ullah

5:51 AM

modern physics began with colours - look at newton with his prism.

ooolb

@MoziburUllah you're a few more phrases away from being KenM.

Mozibur Ullah

KenM? Whose he?

ooolb

a fine fellow

Mozibur Ullah

So I guessed, its not Ken Kesey. Thats the only kesey I ken (know of).

ooolb

is there a language barrier or are you being ironic

Mozibur Ullah

5:55 AM

Hmm, that ouught to be thats the only Ken I ken.

ooolb

if it's the latter then i'm impressed.

Mozibur Ullah

ken is scottish slang for know of.

Its also is/was yorkshire slang for some reason too.

@JohnRennie: is your background in physics?

ooolb

@MoziburUllah who uses proper capitalization in 2017?

you embarrassed me in front of @Blue

hope you're satisfied

Anonymous

@MoziburUllah Nah, he's a soap scientist ;)

Anonymous

(Joking. He has a PhD in Physical Chemistry :))

Mozibur Ullah

6:00 AM

Bubbles are cool - they've got rainbows swimming in them.

I am satisfied ;).

And like a cheshire cat nly my smile remains ).

only my...

user400188

Does anyone know the best place to place a pair of collimating lenses, to focus laser light?

ooolb

@JohnRennie who would win

Mozibur Ullah

@ooolb: non millenials...

ooolb

a fine englishman with a degree in quantum chemistry or some cool oids

Mozibur Ullah

sounds like a good place to do some finite group theory and play about with energy levels.

ooolb

6:04 AM

@MoziburUllah are you a chat bot?

Mozibur Ullah

I'm playing the imitation game!

ooolb

who are you roleplaying?

Mozibur Ullah

Nobody - I'm just being myself.

Thats my real name by the way. It takes some cheek to tell someone they're role-playing when they've got monikers like ooolb. How do you pronounce that?

No capitals neither.

ooolb

whoah

Mozibur Ullah

I was jesting...;).

ooolb

6:08 AM

the pronunciation is down to interpretation.

it's blooo backwards which is blue spelled autistically.

Anonymous

ooolb is the mirror image of blooo

Mozibur Ullah

(groan)!

ooolb

@Blue +1

i expected no less from Blue

Mozibur Ullah

@Blue: +100.

Cows

Going to read some GR tonight

Mozibur Ullah

6:10 AM

That should have been to @ooolb.

ooolb

book?

Cows

@ooolb it's a secret hehe

I mean it's just some notes someone gave me

ooolb

@Cows that's really shady

Mozibur Ullah

I've always liked Robert Gerochs book, General relativity from A to B; he gets to the point using just basic arithmetic just like Einstein did with special relativity; it was the first book I read on GR.

Cows

@ooolb hehe, I do have a few GR texts though. I have Caroll's GR text, and another one, I forgot the author though, too lazy to get up from bed and check lol

ooolb

6:12 AM

@Cows nice i was reading carroll too

Cows

yeah it's the standard graduate text

Mozibur Ullah

But not too lazy to type. When we have voice activated typing we won't even need to do that.

Cows

I am not reading it now though :P

@MoziburUllah yeah lol

you know there is software that does voice activated typing though

I actually used to own it

Mozibur Ullah

I do...but I don't have it, and I've never been anywhere near it.

Cows

nuance.com/dragon.html

Mozibur Ullah

6:14 AM

@cows: how well did it work?

Cows

it's was ok, this was a few years ago. I am sure it's better now

I once met a professor who coded something like this for latex

0celo7

I feel like I should read Einstein's GR book but I might go crazy like a certain person

lord voldemort?

who went crazy lol

shall not be named

6:16 AM

hmm hehe

ooolb

or you'll get banned

Mozibur Ullah

I was thinking of Godel - he went paranoid - he starved himself as he thought people were trying to poison him.

0celo7

No, a (former?) user of this site

Mozibur Ullah

Sad end for a fine mind really - and he was a good friend of Einstein.

0celo7

He got banned for saying some nutty things to the wrong people

Cows

6:17 AM

wow

Mozibur Ullah

Don't you eventually get unbanned?

0celo7

he's still got a few months left

ooolb

@MoziburUllah after you say some fruity things to the right people.

Mozibur Ullah

How do you know the right people from the wrong people?

Cows

lol

Mozibur Ullah

6:18 AM

lol!

Great minds think alike. lol!

0celo7

@MoziburUllah the wrong people are the people who can literally erase you from the system if they really wanted to

Cows

yup :D

ooolb

@0celo7 fok da system

Mozibur Ullah

Do they come with some kind of mark on their icon so you know to be careful around them, or do you just have to hang around for long enough.

?

ooolb

how do you delete system32 for stackexchange

Mozibur Ullah

6:20 AM

yeah - rage against the machine!

ooolb

[edited to look ironic]*

gn i'm going to sleep

S L E E P

L

Mozibur Ullah

My guess would be that they're employees of SE or have some close association - that way you get close to the source...

ooolb

E

0celo7

@MoziburUllah yes, this person was

ooolb

3

P

Mozibur Ullah

6:22 AM

E? 3? P? Is this some secret internet slang?

I've gotten as far as :P.

My kitchen calls, I've got a soup on the boil.

Sid

@0celo7 Why do I feel like I know who you are referring to...

Bernardo Meurer

@JohnRennie Morning!

Do you want to adopt my friend who is going on exchange to Leeds soon?

0celo7

@Sid because everyone knows him

John Rennie

@BernardoMeurer Morning

@BernardoMeurer not really :-)

Bernardo Meurer

Well, I mean that figuratively :P

John Rennie

6:29 AM

Leeds university, or is she working in Leeds?

Bernardo Meurer

She's going to Leeds uni, yeah

She's real nice John, and she listens to me rant quite a bit

John Rennie

Leeds is a great city. Bit cold though.

Bernardo Meurer

So think of all the rants that weren't posted here because she listened to them

Sid

@JohnRennie that is why you should always use "they". instead of "he" and "she"

John Rennie

Unilever has a factory there and I used to have to go there on a regular basis.

Bernardo Meurer

6:30 AM

@JohnRennie Nice! Give her the city tips :P

John Rennie

@Sid Shrug :-)

Bernardo Meurer

She hears me talk about you a lot :P

John Rennie

I haven't been to Leeds for over a decade ...

Bernardo Meurer

Bah

Mozibur Ullah

Leeds was definitely cold during the 70s, especially during winter when the snow fell .

John Rennie

6:32 AM

It's the wrong side of the Pennines. They shield it from the Gulf Stream that keeps the west side of the UK so warm.

Bernardo Meurer

Lol

0celo7

Giving a talk in the PDE seminar later today

Mozibur Ullah

Good luck!

0celo7

I have a feeling I’m going to forget some really trivial analysis

I just got out of bed to work out some Holder norms

@MoziburUllah thanks

Bernardo Meurer

@0celo7 Struggling with that proof

I have found the pattern though

$$\frac{T^k}{k!}$$

0celo7

6:35 AM

Seems right

Sid

@0celo7 Good luck!

0celo7

John can help you

I’ve got to sleep

Bernardo Meurer

But the induction step is not easy

@0celo7 Night!

0celo7

Night

Mozibur Ullah

@ocelo7: G'night.

0celo7

6:35 AM

@Sid thanks

John Rennie

@ACuriousMind @heather @Mithrandir24601 individual hair follicles grow hair in a cycle. They produce hair (at about 1cm/month) for several years, then they go into a resting state and the hair drops out. Then they start producing a new hair. That's why there is a maximum length for hair even if you never cut it.

I studied this stuff when I did some work with Unilever's hair care division.

Sid

@JohnRennie What is that max length?

Does the same hold for facial hair?

John Rennie

@Sid the active growing phase (called anagen) varies from individual to individual and it varies with age. But it's generally 3-7 years and the growth rate is around a cm per month.

So the maximum length is of order one metre.

Incidentally that's why it's normal to find hair drops out when you have a shower or bath. It's just hair follicles that have reached the natural end of their growth cycle and are shedding the hair they were producing.

Mozibur Ullah

So from head to just above knee-level.

Sid

@JohnRennie So, you are saying that hair-loss is normal and people shouldn't freak out over it?

John Rennie

6:48 AM

From memory you naturally lose about 30 hairs a day due to the cycling

Mozibur Ullah

That explains a lot about my bath-tub!

Anonymous

@Sid Unless the rate is too high. Everyone loses hair everyday.

Anonymous

Obviously if you're becoming bald...that's something to worry about

John Rennie

@Blue I'm not sure it's something to worry about since there's nothing you can do about it!

You just have to grin and accept it.

Anonymous

@JohnRennie Well, yeah. Worrying doesn't help much

Anonymous

6:51 AM

One could get a hair transplant or something

Anonymous

Often baldness is genetic

Anonymous

But then there are some diseases which can cause people to lose hair

Anonymous

Some cool stuff: mindblownmath.wordpress.com/2013/09/02/…

Sid

@Blue So, you do a bunch of Math things and tell me that the max length of the hair can be 3 feet(~1m). JR being the hand-wavy physicist that he is, sits in his chair and tells me the max length of hair can be 1m. Hence, proved: JR is a genius

Anonymous

JR gave the biological reason. :P

Anonymous

7:05 AM

The math gives the proof

Anonymous

The DEs point out that there is a stable equilibrium formed

John Rennie

Well, the proof consists of just multiplying a velocity by a time. Hardly mind mangling :-)

Sid

Biology never gives you an exact value. JR gave a very close value...

John Rennie

The same applies to all hair follicles, but the growth rates and growth cycle durations differ.

Mozibur Ullah

I was just thinking the other day that maybe DNA is a binary code.

John Rennie

7:08 AM

That's why your eyebrow hair maintains a constant (average) length even though you never cut it.

Likewise nose hair, though strangely the maximum nose hair length seems to increase as you get older.

Sid

@JohnRennie My eyebrow length increased from what it was when I was younger...

Anonymous

@Sid This is actually a part of a field of mathematics called dynamical systems, Sid :P Remember the predator prey models? You can hand-wave and say that the curves are always closed. But the DEs actually show that neither the predator or the prey never becomes extinct.

Anonymous

@JohnRennie Well, that was the simplest version

Anonymous

:)

Mozibur Ullah

@JohnRennie: I've noticed that with nose-hair...

Anonymous

7:11 AM

There can be more non-trivial math done with this, I'm sure

Mozibur Ullah

empirically speaking...

John Rennie

Eyebrows seem to get bushier with age as well. Observation suggests that old men tend to have bushy eyebrows and lots of nose hair (ugh :-)

Anonymous

@JohnRennie Unless they have a habit of digging their noses XD That's would be more "üghy"!

John Rennie

What a lovely turn this conversation has taken :-)

Mozibur Ullah

Drawings of father christmas always have him with bushy eyebrows...

@JohnRennie: some-one brought up hair...and then it went from there.

As usual, down hill, then off a cliff.

;).

Anonymous

7:15 AM

At least be happy we're still talking about hairs on the upper half of the body. ;)

John Rennie

Incidentally, when my nose hairs started getting long I tried dealing with it by plucking the hairs. But ... I don't advise this. It is agonisingly painful! I tried it precisely once :-)

Sid

@Blue Um... yeah, no. (Ugh)

@JohnRennie I tried plucking my eyebrows. Wasn't very pleasant...

Anonymous

I better go off now or else I'd have to tear my hairs in the exam hall. See you people later :P

Mozibur Ullah

Its annoying when you find one hair just that bit longer than the rest...

so ya got to pluck it.

Now that I'm in London, I kinda missed the small city vibe of a place like Leeds.

Bernardo Meurer

@MoziburUllah Do you know anyone at the maths dpt of ULeeds? :P

Mozibur Ullah

7:24 AM

I'm afraid not - I once knew a molecular biologist there - but I've kinda lost touch with her now.

Bernardo Meurer

Dangit :P

Mozibur Ullah

Leeds was the city I grew up in, but I didn't study there.

Bernardo Meurer

Thanks for answering me though

Mozibur Ullah

Whats your interest in Leeds?

Bernardo Meurer

My friend's going there for exchange next semester

She asked if I knew anyone to give her tips or show her around or anything and I don't

Mozibur Ullah

7:26 AM

I've kinda lost my Yorkshire twang, I was listening to a real yorkshire man the other day and I was thinking did I once speak like that.

Bernardo Meurer

Because @JohnRennie Lives inside a Greggs somewhere, and he's the only brit I know

Mozibur Ullah

Hyde park corner is close to the university quarter and its a good spot to hang about in; Headingly is a little North of that and thats nice; theres a town called Hebden Bridge which is a nice arty village.

Bernardo Meurer

@MoziburUllah Taking notes

Mozibur Ullah

The old city library has been pimped up a bit and it has a nice cafe there. Lovely old victorian archtecture.

There's also an old style market in Leeds city market which is good for atmosphere. Its not like your polished markets that I was agog at OXford - I kept thinking this isn't a real market...

Bernardo Meurer

Nice! Dully noted

Mozibur Ullah

7:32 AM

It also has a nice cosy art gallery next to the city museum which isn't grand but still good; the Henry Moore gallery next to that is more austere and contemporary.

And theres always the Moors if you want a bit of nature - all you have to do is just drive out of Leeds east.

If I think of anything else I'll keep you posted.

Bernardo Meurer

@MoziburUllah Thank you so much!

Mozibur Ullah

Whens she moving there?

Bernardo Meurer

She leaves Jan 14 I think

So around that time I suppose

Mozibur Ullah

You're welcome. Never thought that info would come in useful - its been sometime since I've bumped into someone with a connection to Leeds.

Bernardo Meurer