The h Bar

@bream a battery is like a pump. In fact it's literally a pump since the chemical reaction inside batteries pumps electrons through the battery from the + terminal to the - terminal.

But electrons can't appear from nowhere and they can't disappear into nowhere. the battery can only pump electrons if there's a circuit for the electrons to travel round.

There's a (very good) analogy that is to imagine an electrical circuit as water flowing round pipes. The water is the electrons, the pies are the wires and the battery is the water pump.

@Kaumudi.H hi, want to chat?

user228700

@JohnR: Hang on, did you ping me about gchat last night?!

@Kaumudi.H no, just now.

user228700

Ah, no, that was in the room :-)

I couldn't sleep so I'm up early today

user228700

3:45 AM

Ah, that answers my question :-) What time is it over there?

04:46

user228700

Wow.

I got up just after 4 a.m.

user228700

It's 9 AM here and I have woken up just now! And I am proud of myself!

@Kaumudi.H not really. I generally get up before 05:30 so I'm only an hour early.

user228700

3:47 AM

Right, but still...

Good :-) A good night's sleep is an excellent therapy :-)

user228700

How's work going?

Haven't looked yet. For all I know the office might have burnt down overnight.

user228700

Hahaha x'D OK.

(I hope not since they've got one of my computers :-)

user228700

3:48 AM

:-)

user228700

Gchat for just a bit, then?

Over to gchat ...

4:15 AM

@JohnRennie why before 5:30? Morning walk?

@Sid my job is to check about 500 servers to make sure none died overnight.

I try to do that as early as possible to give the engineers plenty of time to fix problems before the working day starts.

Wow... So, basically you are the guy behind-the-scenes for your company

@Sid that's me :-)

Can you threaten the company that you will leave unless you get a raise?

@Sid I'm paid pretty well :-)

bonCodigo

4:22 AM

Hello, is Farchar around here?

@bonCodigo he doesn't use the chat room very much I'm afraid.

bream

ooh yeesh, i disappeared for quite a bit

@JohnRennie thanks for your reply, i think i'm getting it a little better now

@bream I'm pretty certain I answered a question on exactly this subject. Let me see if I can find it.

bream

it still feels weird because i imagine any cathode to have an "excess of electrons" and any anode to have a "dearth"

so a pump between anything that has too much water and something with not enough water should flow

but i guess it doesn't work like that

2

A: Can conductor be charged?

A voltage source acts as an electron pump. Suppose we take a battery as an example, then in the battery a chemical reaction pumps electrons from the cathode to the anode. The cathode becomes depleted in electrons and becomes positive while the anode acquires an excess of electrons and becomes neg...

That kinds of addresses the issue.

Farcher

5:24 AM

@bonCodigo I am in the UK but usually do not awake as early as @JohnRennie.

7:29 AM

I see 5x4 rectangular shapes.

Gautham Shankar

@Secret focus on the space between the edges of adjacent rectangles.

Ah, I see them floating in the forground of the horizontal stripes now

I wonder, without that description as a cue, are we supposed to see rectangles first or circles?

Gautham Shankar

I think it depends on the distance from which the image is viewed. If you watch it from a close enough distance, you get to see the circles, else the rectangles.

\o @yuggib

yuggib

o/

7:42 AM

How are you?

yuggib

On holiday, so fine B-)

cool

yuggib

But on monday I'll go back to work

Hey all!

Gautham Shankar

8:06 AM

Good articles on the working of fidget spinner?

Slereah

8:16 AM

inertia

the c o n s e r v a t i o n o f a n g u l a r m o m e n t u m

Rumplestillskin

Has anyone got any experience with spherical harmonic expansion of vector functions?

@Avantgarde I've just started listening to this, but it looks good. Seriously weird shit.

It's sequel, The Drift, also looks very good.

8:53 AM

This is not black and white, but it is more vibrant than black and white

Not vibrant enough

I have yet to pin down the word that describe the emotion when I saw this color combination

That emotion of mine, currently best described as seeing this, but amplified 1000 times

Very bright might be a good adjective to describe it

Interestingly, this is not bright enough

11:33 AM

The following picture is intentionally left cryptic

11:54 AM

in The Factory Floor, 16 secs ago, by Secret

I wonder if there is a limit to the size of starship. For example, if it gets too large, won't the part of it within its schwarzchild radius collapses into a black hole?

Brain Surgeon - That Mitchell & Webb Look , Series 3 - BBC Two

12:05 PM

►

Q: Bell theorem - the simplest proof and understanding of the violation?

0

Bell theorem seems something extremely sophisticated, requiring pages of formulas to prove ... so I wanted to ask for the simplest known proofs and explanations for the violation? Basing on Bell-type inequality from this note, I have recently prepared mine (paper) with example of violation using...

question speaks for itself how to deal with it

12:59 PM

Actually... maybe not

Is he using some kind of statistical interpretation of quantum mechanics?

All your $\psi_{ABC}$ are real numbers, aren't they? Then your Hilbert space is of dimension 1 and there is no way it works. — Luc J. Bourhis 34 mins ago

The arxiv does not said anything about whether these are complex

and it seems there is something retrocausal baked into his model

But anyway, I don;t have enough GR background to peel through this in detail, I will just leave it here

@BalarkaSen Thanks, let me see.

Also, I spun 1 Outside almost 3/4th, I think. It's so long I couldn't finish it in one go. But I really liked it. Inspired me to look into more of Bowie's works. I don't know how I missed this years ago

1:15 PM

Oh nice.

I'm a little late, but I hate mangoes too

I don't think he made another tome like that one. Diamond Dogs is an obvious choice but it's not as dark and bleak; it's got irony elements in it.

After all Diamond Dogs is an albumification of Orwell's 1984

Got it, will check

Well's 1984?

Is that a book?

Sorry got that name wrong.

I see. I wouldn't know .. I don't really read books

1:17 PM

Yeah it's a pretty famous sifi dystopia novel.

One of the classics that I haven't read :3

Lol Scott sounds like opera

You like opera-style music?

Not particularly, but this one looks like rather dark opera. Also the style changes track to track

Right

There's a genre called Dark Carbaret. I think you might like that

Hm!

Looking

I'll share a song

1:20 PM

Okay, that'd be appreciated

CooperCape

George Orwell wrote 1984...

Stolen Babies - Awful Fall (With Lyrics)

►

It has some metal too

ample use of bass and loads of experimentation.

interesting

Is that a con way of saying it sucks? :P

Heh, I mean it means I don't per se like it but intrigued by the style.

1:30 PM

:)

1:46 PM

Ok, it appears I am (insert word) enough that I have now read that arxiv in detail:

Basically, his model is that all events in spacetime behave like random walks, so the probability of some outcome will need to account all possible trajectories leading to the event from the past and all possible trajectories leading from the event to the future in such a way that entropy is maximised.

And when doing so, the $|\psi|^2$ is the result of combining all possible worldlines leading to the event from the past lightcone (and possibly beyond) and those from the future

But now the question is: If $\psi$ is just a probability distribution of the set of future paths or the set of past paths, then what is the meaning of complex values under his model?

A more interesting question will be: If His model correctly describes the outcome of quantum phenomenon, why are regions of maximum entropy not delocalised in time (as would be expected once the system in question have maximised the entropy in some region, it should stay maximised unless disturbed)?

and if the probability of some outcome is determined by how the paths maximises the entropy, is it even possible to control how these high entropy regions being distributed given that we only have half of the information (namely the past light cone) for any given moment?

2:11 PM

Now this explains a lot!

3

Serious joke: but misinformation is still information, right?

vzn

@Secret thx for sharing, skimmed his paper, its very ambitious, has a huge out-of-nowhere self-taught maverick feel to it, wild analogies, some great ideas, liked ref to "4d jello". alas it seems kind of a disorganized mishmash also. lets see if he can be engaged (at length) in chat...

@Secret so therefore a person who is misinformed is still informed, right? :P

well, technically bits are still transferred, even if it makes no sense or disagree with your worldview

Also, if misinformation can indeed be transferred superluminally, then it pretty much saying that the present is already kinda constrained by the future (recall that under relativity, any superluminal signally is the same as travelling back in time, and under time travel models where changing the past is impossible, the future necessary impose a constraint on what can happen in the present to satisfy these casual loops), so do we have any hopes of defeating misinformation campaigns?

vzn

@Secret you seem to be getting into philosophy. you might enjoy this recent analysis, just ran across theatlantic.com/magazine/archive/2017/09/… ... anyway though it looks like in degenerate times, rationalism verges on sometimes "merely" a cultural construct...

there is also this amazon.com/Assault-Reason-Al-Gore/dp/1594201226

Danu

3:03 PM

@ACuriousMind you stopped responding at some point. Did you lose interest?

ACuriousMind

@Danu I went to bed

Not because what you said was sleep-inducing ;) I was simply surprisingly tired all of a sudden

But I'm aware of the singularities that may or may not occur in the fibers, and that they should be "small, but I think that's because the duality only works in the regime even for the pure T^3 and K3

@JohnRennie “A lie can run round the world before the truth has got its boots on.” - Terry Pratchett

3

CooperCape

4:20 PM

Fake news has an imaginary mass, of course.

2

5:45 PM

https://physics.stackexchange.com/questions/351540/bell-theorem-the-simplest-proof-and-understanding-of-the-violation

Well, I don't get why vzn's comment is being deleted, but I guess no information is loss since Acuriousmind have restated the off topic reason later on down the track

and Jarek Dula's reply contains part of that information

ACuriousMind

@Secret The comment was not aimed at improving or clarifying the question, it just summarized it and therefore was unnecessary.