The h Bar - 2015-09-14 (page 2 of 3)

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1:01 PM

@JohnDuffield re too users list: you've answered two questions using accepted physics (these got you a lot of rep), the other answers have been consistently downvoted

So your rep position does not lend any credibility to your pet theories, sorry.

If JR told us electrons are 511keV photons we wouldn't believe him either.

For example, Dirac's wave equation that you cite above is intended to be an equation to describe, roughly speaking, the evolution in time of the probabilistic description (the wave is a "wave of probability" in very rough terms) of a massive spin-1/2 particle. With that interpretation, it gives predictions that are in very good agreement with observations up to a certain precision; then it is not correct anymore (and you need another theory to better fit those more precise observations).

If you want to give to Dirac's equation another interpretation (as a concrete wave describing a force field, or whatever) you have to be able to produce predictions that fit with your interpretation and the related experimental evidence. But those predictions have to be testable, i.e. numerical, and therefore a certain mathematical apparatus is needed.

user image

Numerical analysis stuff: Pretty ribbon looking diagram

initial condition: $y=x^3$, iterative function $\sin(y)$

Fixed points are those that intersect the x axis
The density of the rainbow gradient lines give the rate of convergence to the fixed point (the more spaced out, the faster the convergence)
The underlying code need to be further refined before it can be applied to the logistic map

1:26 PM

lol even yuggib can't resist

@yuggib : we have people here who dismiss those experimental facts because they don't square with something they've been told. And then they have to gall to refer to them as "your pet theories". I didn't invent electron diffraction. It wasn't me who came up with spherical harmonics. I didn't write the Wikipedia atomic orbitals article that said electrons exist as standing waves.

@Danu I succeeded for so long...

All the lols

@JohnDuffield Is electron = 511keV photon an established experimental fact?

We should put up a straw poll and see how many people agree.

Sep 9 at 13:27, by The Dark Side

41 mins ago, by Slereah

user image

1:35 PM

@0celo7 : pair production and annihilation are experimental fact. So is electron diffraction and the wave nature of matter. Go read the Wikipedia atomic orbitals article: "The electrons do not orbit the nucleus in the sense of a planet orbiting the sun, but instead exist as standing waves." And don't blame me if that doesn't square with some tosh you've been taught about the electron being a point-particle.

@JohnDuffield You're avoiding the question.

I'm not avoiding anything. You are.

Show me that electron = photon

You make this claim.

You have the burden of proof.

Show me how an electron gets it charge from the photon.

I don't make that claim. A photon propagates linearly at c. An electron doesn't. Now go and look at that evidence instead of dismissing it. What do you think happens in pair production? Magic?

You don't make this claim?

1:37 PM

@0celo7 : ask the question and I will explain it.

Sep 9 at 13:27, by The Dark Side

41 mins ago, by Slereah

user image

You're telling me an electron is not a photon in a Dirac belt configuration?

@0celo7 : ask the question. And look at the evidence. Now do excuse me. Work calls.

2:11 PM

If a question has a bounty, but you get the feeling it is probably a homework question ... is it okay not to answer it properly ... but just help out a bit?

2:29 PM

@AngusTheMan If you think it violates the HW policy, flag it for mod attention. If it doesn't, it's fine to answer it completely, I'd say.

Answer it anyway for delicious points

@Slereah haha maybe :p

Points are good

@JohnDuffield I looked at The Evidence, but I still don't know what you're talking about.

imdb.com/title/tt1828970/?ref_=fn_al_tt_4

imdb.com/title/tt1001555/?ref_=fn_al_tt_2

Two great movies

2:43 PM

I'll ask the question.

It's almost done, will polish after lecture.

user image

The chaotic region, I should move closer to 4 since it is still not messy enough

@KyleKanos Reading your updates profile makes me ask...

@Slereah Even better:

imdb.com/title/tt1001555/?ref_=fn_al_tt_2 $\bigwedge$ imdb.com/title/tt0460638

2

Can you help me get [insert financial item]?

user image

Zooming in the $\lambda=3.58$ region

2:55 PM

what are you doing @Secret

Analysing the logistic map and trying to better understand fixed points visually in many discrete dynamical systems

Previosuly I have analyse the case for iterative sines and cosines and x^2

3:28 PM

user image

$\lambda=4$ for the first 105 iterations
Each surface is 5 values of k (except for the first one, which is k=1,2,3,4)
Interesting features were noted
The logistic map shows where we are in this Alien Space that is the logistic map

0

Q: The electron is a 511keV photon going "round and round." How does this work?

I'm curious about the properties of the electron as given in this PSE post. I always thought the electron was an excitation in the electron field. Apparently that's not true and it is a photon going round and round in a Dirac's belt configuration. I have some questions regarding this: 1) How doe...

quantum-mechanics quantum-field-theory photons electrons quantum-spin

@JohnDuffield Please answer my question now.

Hmmm... too broad or non-mainstream, which one to choose.

This is completely mainstream.

Lol, let's have a vote on that

ACM-senpai now thinks less of me

@ACuriousMind did you at least read it

3:41 PM

@0celo7 Yes. Those are good questions for Duffield.

rofl

@0celo7

@ACuriousMind got me thinking, how does electric charge happen in string theory anyway

does it have to do with the U(1) gauge theory or something

@Danu this is serious physics, not a laughing matter

He has been brainwaaaaashed

got a +1 roflmao

@Danu brainwashed by the truth, yes

::whistles innocuously::

3:45 PM

@Danu why u edit

you could have just told me that

hmm, I did not think this one through

people will think I'm serious

can I put a jk at the bottom or something

@DanielSank : the evidence is evidence for the wave nature of electron.

@0celo7 : I'll answer it.

@JohnDuffield thank you

So I fixed my shoe with duct tape :)

@Huy I'll make a quick review of the mouse now!

@JohnDuffield Dis gon' be gud

4:00 PM

@Danu you're an engineer in disguise

user image

Guys : 0celo7 has been dismissing hard scientific evidence and robust references in favour of kiddies' popscience he's picked up. I'll answer this question and hopefully clarify matters. Bear with me. — John Duffield 35 secs ago

10/10 Heroic effort to revolutionize physics as we know it incoming!

can't wait

(flagged for rudeness)

::looks at bookshelf::

holy crap that's kiddie popsci?

god damn I really am behind

what if it gets closed before we get an answer?

@JohnDuffield please answer pointwise

I'd like to have each point addressed separately

@0celo7 : I'll answer it pointwise. Guys, if you see close votes on it, vote to leave it open.

4:22 PM

@0celo7 k, looking forward to it

I think we got another trolling attempt here

@Huy title says it all

Reminds me of some older posts having an absurd claim about someone getting hit by a high voltage line that arced when.. dont remember.. someone took a photo with a flash or something.

@Ocelo7: that is a frankly contemptible question. It's not a question but an attempt to call out another site member. Whatever your views on that site members posts this is not the way to air them.

We don't do public shaming here. Not under any circumstances.

If you don't like someone's post then downvote it, then go home and get a life.

@JohnRennie He told me to ask a question, I did.

4:32 PM

That's not an excuse.

I see no reason for an "excuse" for anything.

Because someone asks you to behave like an arse is a poor reason for doing so

He refused to answer my question any other way. I still don't see the issue.

For reference:

3 hours ago, by John Duffield

@0celo7 : ask the question and I will explain it.

[this has happened many times before]

hmm, Timaeus answered?

4:39 PM

yes...seriously

I think he's misunderstanding the situation

he does not visit the chat

he's telling me how to measure spin using Stern-Gerlach

so it is comprehensible

> Quarks and antiquarks can also be made from photons.

ok what

now I'm legitimately confused

@Huy lemme know if you have any more questions about the mouse

4:44 PM

@yuggib The word you're looking for is "understandable"

(it's not exactly the same thing)

@Danu maybe you're right... :P

It's a tiny difference

Danu is right, like always

Yet comprehensible sounds really out-of-place in that sentence

can confirm, am native

4:45 PM

@0celo7 I like this way of thinking

I know, but it is a saxon difference

damn saxons...

saxon difference?

proper of the saxon roots of english language

for the record, does anyone besides JR think that question is completely out of line?

I agree that, without the context of chat, it seems that way.

But given the extraordinary situation that has been going on here before, with many attempts to seriously understand what JD is on about, with him refusing to answer except through the main site, I don't think it's so bad.

Still quite edgy, so to say.

4:49 PM

And it is a bit sarcastic, probably...but I agree with @Danu

it was designed to be snarky

should I try to rephrase?

this boils my blood: people who don't say "et cetera" but some version of "ec sedra"

well you cannot make the question as "only answerable by john duffield"

did anyone read Timaeus' answer? I don't think he understands JD's claim

@0celo7 That's pretty normal in the US, innit?

@0celo7 I don't think anyone does

I'd love to watch this play out, but I gotta run

4:52 PM

@Danu yes...I don't like it when my tribesmen make my blood boil

@ACuriousMind It's not going very quickly, you're probably fine

where is @Slereah, he'd love this question

0

Q: Is this site for asking mathmatical physics questions, questions on intuition, or something else?

My highest voted question on this site involves the skipping of rocks here. It sits at 11 up votes. My second most up voted question actually has multiple candidates. However, in the spirit of fairness, I choose this one. It had a bounty, and was a question involving the derivation of a probabil...

@0celo7 The problem is that, strictly speaking, no one knows how that was intended to be pronounced

however, the studies and the linguistic evolution of latin towards modern languages suggest it had not been "the american style"

5:08 PM

@0celo7: Seems rather similar to my G700, function wise.

@0celo7: I hope you don't have the side-clicks on the wheel set on "side-scrolling".

I think I do, why

@0celo7: Do you use side-scrolling a lot?

no

Set it on volume up/down.

Best thing ever, imo.

I always cry when I use a mouse without that function.

did you catch a glimpse of my Corsair :D

5:10 PM

ofc

I think I want to put page forward/back on the wheel

then I can put F5 on the side

I have those on the side

and I have back/next for iTunes on the other two on the side

other two?

do you have more buttons?

I think I only have four buttons on the side (thumb)

I have 3

5:11 PM

I see

then you have to think different

well you saw the video!

I'm listening to it in the background until I hear something exciting

:D

I don't need iTunes controls on the mouse

I see

also why on earth did you hold the camera this way

because ghetto

5:12 PM

is that an attempt of making me rage?

-____-

it is quite big, but it looks smaller than my G700 actually

and I have rather small hands

does the trackpad comparison work?

yea

my friend has huge hands though so he'll be happy it's big

btw the light is set to a very dim setting

@0celo7: dumb question: do you know how to make calendars default open the "calendar" itself (#apple + O)? I added some shared calendars to my calendar and now for some reason whenever I start calendars, it opens one of the shared ones instead of mine.

first, it's called iCal

5:17 PM

it's just "Kalender" in German

verdammte Deutsche

:(

should I have done the review in German?

no lol

I don't use iCal on my laptop, so I don't even understand your issue

I just use it to set reminders, but I do all of that on my phone

5:19 PM

do you use any 3rd party calendar/mail app?

I use gmail for school stuff

I use outlook on PC

I do use the calendar, but I just do everything on my iPhone, I have no clue what the desktop app even looks like

ic

I use the apple mail app

because my primary personal email is a mac.com address

very rare

ewww :P

my school is vols.utk.edu

you can find my school email quite easily online

5:27 PM

@0celo7 WOULD I

have you seen it

1

Q: Is this site primarily for asking mathmatical physics questions, questions on intuition, or something else?

My highest voted question on this site involves the skipping of rocks here. It sits at 11 up votes. My second most up voted question actually has multiple candidates. However, in the spirit of fairness, I choose this one. It had a bounty, and was a question involving the derivation of a probabil...

that one?

@Danu that's what she said :'(

-2

Q: The electron is a 511keV photon going "round and round." How does this work?

I'm curious about the properties of the electron as given in this PSE post. I always thought the electron was an excitation in the electron field. Apparently that's not true and it is a photon going round and round in a Dirac's belt configuration. I have some questions regarding this: How does ...

quantum-mechanics quantum-field-theory photons electrons quantum-spin

that one

how did you get mac.com

I only have me.com

you have a father who gets you an email when you are born and Apple gives out limited numbers of mac.com addreses

it's a very exclusive club

5:29 PM

@0celo7 You scamp

pf

Hey, you've read Thinking, fast and slow @0celo7

nice book huh

we're reading it for my psych seminar

speaking of that

I need to eat lunch and start the homework

The entire book?

That's quite a lot.

I'm 100 pages in

it's like 450 pages

that's not bad at all

5:33 PM

"I'll answer this question and hopefully clarify matters."

So excited

me too!

@0celo7 Yeah, perhaps; Depends on how much credit you get ^^

1

we meet once a week and discuss the book

the prof is really cool

he's an animal behaviorist

@0celo7 No idea how that translates to the system I'm used to :P

it's part of this honors program where profs can do seminars for honors students about anything they want

like there's one about tree climbing

another about some feminist propaganda

there's one about video games

@Danu it's not a lot of work, but it's required to get a little stamp on my diploma

(actually honors is more than that, that's just a joke around campus)

0

Q: Who can show me how calculate $$\Delta \phi$$?

$$\Delta $$ its Laplace operator Mb someone can solve this and show an analytic result.

classical-electrodynamics fourier-transform

5:39 PM

:-O

someone not earlier than yesterday was lamenting a bad quality of questions lately...^^

wow nice passive aggressive jab at my question

I bet you VTC'd

?

I am talking about the last question you just linked...

Ocelot is on edge lately :P

I feel like the average community member's opinion of me has sunk to that of the average chat goer's

@Danu the imminent arrival of The Evidence is making him nervous

5:50 PM

It's a race between The Evidence and the question being closed

I would vote to reopen

but I don't know if I can with my rep

@yuggib You can, with 3k+

::thumb up::

What is the record for highest rep user who had a question closed

god damn I just had the best sandwich ever

5:55 PM

@FenderLesPaul you're welcome >:(

@0celo7 Don't get your hopes up :P

Sandwiches. That's all I'm good for

@Danu who else with 3k+ is stupid enough to do what I did

@0celo7 Nobody

See

I hold the unique position as a stupid smart man

Questions get closed for all kinds of reasons

5:57 PM

|0celo7> = |stupid> + |smart>

@Danu good point

I can see something getting migrated

@0celo7 Not even normalized

@0celo7 what am I welcoming?

ohh

I get it

thanks bruh

measures @0celo7

@Danu I know

6:15 PM

@Huy i.gyazo.com/f554ed96898f66f4d32b3b72339eb8f7.png

why is the polling rate at 500

ic

what does that mean

idk lol

forward/back on the wheel is very natural

k

each to his own

I'm very used to the other way around

6:17 PM

I got my mouse two days ago, I'm still adjusting

maybe you've been using the Apple trackpad a lot and that's why you feel it's natural on the wheel?

maybe

but the trackpad is shit on windows

the multitouch gestures aren't programmed in

I can imagine

also the right click function is sketchy

when taking screenshots and moving my fingers over the trackpad it sometimes thinks I'm right clicking

very annoying

ic

I don't intend to use Windows on my rMBP so far

6:19 PM

if you do, I can tell you what to do

maybe I'm dumb, but none of the tutorials looked anything like what was on my screen

mostly because I didn't have a disk image of Windows

don't see a reason so far, maybe when I get an iMac

the official windows download was not giving me the correct file

6:55 PM

-3

Q: Gravitational field and our Mass Question. My brain is either confused or great

Could we use a gravitational field to decrease our mass when travelling in space to allow potential gain in speed due to having a lower x amount of mass means you travel faster.

gravity mass speed-of-light space-expansion weight

7:27 PM

ok my research project is getting ridiculous now

its basically "how many different CFT correlators can you compute looking for non-existent chaotic behavior before professor agrees on its non-existence"

JD has answered

not a single equation, figures.

@FenderLesPaul are you reading this

haha he told this guy to read up on fiber bundles

which thread?

0

A: The electron is a 511keV photon going "round and round." How does this work?

How does a massless photon turn into a massive electron? It's just E=mc². See Einstein's 1905 paper where he says "if a body gives off the energy L in the form of radiation, its mass diminishes by L/c²". If you trap a massless photon in a gedanken mirror-box, the mass of the system is...

> I can't use rigorous mathematics

haha

"space is not a bundle of fires"

Sugar Dumpling (Original Version) -Sam Cooke -1965 Album Sam Cooke - Greatest Hits

So nice 'n' cheesy

7:39 PM

oooh it got protected

It's a HNQ

sigh

lolololo

I did it

I'm famous

0

A: Each elementary particle has its own field. What about antiparticles?

Ruby, 1368 95.times{|i|print (i*8%95+32).chr} I tried all the single digit numbers and 8 gave the best result. Here are the others: 2->1757 3->1658 4->1466 5->not possible 6->1464 7->1477 8->1368 9->1906

lolwut

someone got on the wrong window

Wait

Did we try launching the program

Maybe it generates the answer

@0celo7 : I answered your question. If there's anything you're not clear about, please don't hesitate to ask.

7:47 PM

@JohnDuffield I asked for mathematics and received none.

That means you don't have a framework beyond waving your hands around.

He wrote two equalities

Maybe you should have asked for drawings

@JohnDuffield How do you expect me to be able to calculate anything without an answer to 6?

@Danu how do you tell if a question is an HNQ?

@0celo7 : you got no mathematics because scientific evidence demonstrates the wave nature of matter. How many times have I told you about the difference between physics and mathematics? And you're still asking for mathematical evidence. FFS. On top of that Timaeus told you about the Stern-Gerlach experiment, and you ignored his whole answer.

What the hell does Stern-Gerlach have to do with this?

I'm insulted you think I don't know what that is.

@0celo7 Click the big "physics" logo on top, then there will be a tab "hot"

Part of those questions will be in the HNQ list

7:57 PM

@Danu ic

Not all, but a significant fraction

You can tell by the # of views, usually

Also, this is the trick to EASY, large amounts of rep.

@0celo7 : Stern-Gerlach is scientific evidence. You know, the thing you dismiss because you think mathematics is evidence.

@Danu What on Earth does Stern-Gerlach have to do with this?

@JohnDuffield Scientific evidence of what???

That electrons have spin? No shit!

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