The h Bar

Wad Cheber

9:00 PM

"Bill carries stuff. They let Bill go. Bill shows up again and carries more stuff. The end."

Slereah

Yay ponies

Wad Cheber

"Oh yeah, Bill kicked someone once"

Slereah

You go pony

"Bill played a small part in the winning of the Battle of Bywater by kicking his former master, Bill Ferny, in the backside, and thereby freeing the Shire from further entanglements from the foul man."

Yay

Wad Cheber

Anyway, my point was that 3k in 5 months is meh. I got about 14k in 4 months, and another k in another month. Not including losses of about 19k.

Slereah

Most importantly an upvote is 10 points and a downvote is -2 points

Wad Cheber

9:03 PM

And it isn't something to be proud of anyway.

Slereah

Overall score is not very indicative

Most of JD's answers are downvoted like hell

Wad Cheber

My top scoring question was "How many axes did Gimli bring?", which is also probably the worst question ever.

Slereah

Because to put it politely, his opinion on physics don't really align with the mainstream

The best scoring answers tend to be the simplest

Hm

Maybe I should go to the SF Stack Exchange

Wad Cheber

@Slereah Is he the infamous guy who is "boycotting" physics.SE now?

Slereah

Unfortunately no

Find the inevitable question about the link between Warhammer and Warhammer 40k

skill patrol

9:05 PM

Politeness is important to remember with him.

0celo7

You're so mean

Wad Cheber

That guy is a peach.

Slereah

And then post my 3 page analysis of the topic

Wad Cheber

@Slereah Do it. Plenty of warhammer questions already.

Slereah

I don't want to toot my nerd creds but I probably have made the most complete and crazy analysis

I had to dig up some bloody old pamphlet for that shit

It's all in French currently tho :p

0celo7

9:07 PM

I bet @FenderLesPaul tooted your horn earlier

Slereah

oh snap

14

Q: Link between Warhammer Fantasy and Warhammer 40k

Is the 40k just Fantasy in the future? They exists in parallel worlds or Fantasy is an enclosed space quadrant of universe in 40k?

skill patrol

::snap::

Slereah

Ah yes, there it is

It's a constant of every warhammer question site

Let me get my crazy textfile with every reference to it over the past 30 years

Wad Cheber

Just found the guy I was talking about - apparently he's suspended

His name is Ron Maimon.

I've read some of his posts with amusement.

It seems like he can be.... difficult... at times.

Wow. Suspended for a year no less.

"I do not participate on this site any longer, except to respond to comments regarding my own text, if that text is unavailable in another form. I do not accept the political moderation atmosphere here, it is not compatible with open science. Unfortunately, this seems to be a recurring pattern on such sites---

they grow with promises of open participation, and then shut down in a phase transition of censorious moderatorship. Hopefully physicsoverflow.org will be the first exception to this rule, as the policies there were crafted specifically to avoid this phenomenon."

Fun fact of the day: If your profile says something like that, the problem is probably you, not the site as a whole.

0celo7

9:22 PM

I never understood what Ron Maimon did

Slereah

Isn't he a biblical demon

Mammon the demon of greed

0celo7

Makes sense.

Wad Cheber

@0celo7 I haven't heard anything about it

Did he eat a live puppy?

0celo7

Well he got suspended for some reason

Wad Cheber

Obviously, eating a dead puppy isn't a problem.

Therefore, it must have been a live puppy [logic ftw]

0celo7

9:24 PM

What else are ya gonna do with a dead one

ACuriousMind

Why are we ruling out kittens as victims?

Wad Cheber

@ACuriousMind Kittens are evil.

ACuriousMind

That doesn't mean you can eat them!

Wad Cheber

I think it's a bigger problem to not eat kittens.

My dog concurs

0celo7

You're a monster

Wad Cheber

9:27 PM

@0celo7 Am I?

0celo7

@ACuriousMind thank you for not being kittenist

Wad Cheber

Yes, but that's no reason to call me one.

0celo7

@WadCheber it depends on how itchy your ban finger is

Wad Cheber

In the SF&F chat room, we regularly accuse one of our mods, Richard, of eating puppies and punching kittens to death.

I'm not accustomed to your strange ways.

0celo7

Well Richard is the kind of guy who would do that

Wad Cheber

9:30 PM

If the ban would only apply here, I don't see it as a strong deterrent.

I don't think I've ever been here before.

Although you guys are the best friends I've ever had.

I feel like this relationship is going places.

HE IS HERE!

FLEE, FLEE FOR YOUR LIVES!

BEHOLD MY WRATH

HIDE YOUR KITTENS!

That's his kitten hammer.

0celo7

I've felt it.

Longest 30 minutes of my life.

Wad Cheber

9:35 PM

@Richard @0celo7 DID IT, M'LORD!

VISIT THINE WRATH UPON HIM! OR HER, AS THE CASE MAY BE!

I haven't been here long enough to know people's genders.

Richard

@WadCheber - My divine mercy has been visited upon you. More pressing matters take up my attention.

Wad Cheber

PRAISE HIM IN HIS MERCY!

I'm going to go back to Mos Eisley where we're allowed to talk smack about him.

ACuriousMind

Is there...some kind of script that notified him his name was spoken here?

NeuroFuzzy

Neurofuzzy in the hizzouse.

Wad Cheber

@ACuriousMind I bragged about the fact that I got people here talking about him.

He saw it.

0celo7

9:46 PM

Test

NOT BANNED

my question is still locked

NeuroFuzzy

I </3 Christoffels

0celo7

no one has ever <3 them

they're literally trash

NeuroFuzzy

$\neg$(I <3 Christoffels)

And intuition for this stuff is still not forthcoming

skill patrol

@Richard Again with the ban hammer?

NeuroFuzzy

But th ere are 62 problems in this chapter and I've done 14 so I guess I just haven't earned the intuition yet. :p

vzn

9:50 PM

@WadCheber reminds me of a new kickstarter game exploding kittens... tried it few wks ago... luv it :P

chatted a bit with Richard the Great awhile back in F&SF. witnessed his ascending kingship myself! :)

skill patrol

nvm, I give up.

Go out in real life and find out how far that gets you pal.

0celo7

@skillpatrol what's your problem?

DanielSank

@DavidZ Does StackExchange support perhaps giving users a warning if their question/answer contains e.g. an equal sign but does not use mathjax (i.e. no $)?

I feel like I type instructions to use mathjax into a lot of new users' first posts.

Slereah

10:13 PM

0

A: Link between Warhammer Fantasy and Warhammer 40k

Alright, before I give a detailed answer, here are some historical details about Games Workshop that are relevant to the issue : Rick Priestley joined GW in 82 with a game he developed called Rogue Trader, which would in the future become Warhammer 40k (due to worrying about it being confused w...

Finally

Not sure it serves much purpose because it's a bit buried beneath the other answers

AngusTheMan

Is it a general feature of nth order ODEs that there is a corresponding first order PDE in n+1 variables? Is this a well known thing or only under certain circumstance?

Slereah

"Why Are There So Many Alliterative Names in Comic Books?"

If I answer "Because comic book authors are hacks", will I get sanctioned

Mike Edenfield

you might get upvoted

Slereah

10:32 PM

10

Q: How to synthesize methamphetamine?

I am asked to synthesize "methamphetamine." Note that there is no configuration designated for this molecule, and methamphetamine refers to a very specific configuration. In any case, here are the steps I took: Reduction with hydrogen gas and Lindlar's catalyst. This transforms the alkyne in...

organic-chemistry reaction-mechanism synthesis

Finally some useful question

Mike Edenfield

@Slereah "very carefully"

Slereah

obviously you've never had to fix up some meth for your next fix.

"carefully" does not enter it

Mike Edenfield

ok, "very carefully and/or in a ground floor motel room near the dumpster."

Slereah

Livin' the meth dream

Hm, speaking of drugs

I could stick to dieting

Or I could make some baked potatoes

Ah, I'll probably stick to it

Going to bed soon anyway

Mike Edenfield

I booked my parents in a nice hotel room by my house when they came to visit. The week before they came here, the room below theirs blew up from a poorly-constructed meth lab.

I chose not to tell them

Slereah

10:38 PM

Baking potatoes is much safter than baking meth

And, while I cannot compare them personally, just as delicious I suspect

ACuriousMind

@Slereah Depends on the person doing it

Slereah

Baking Bad

safer :p

NeuroFuzzy

10:58 PM

@AngusTheMan example?

FenderLesPaul

@0celo7 honey I'm hooome

where is my sandwich at?

vzn

11:10 PM

You're not irrational, you're just quantum probabilistic: Researchers explain human decision-making with physics theory / physorg

0celo7

::hides arsenic::

right here

Physics Meta

0

Q: Are sophisticated Astrophysics Q's better asked in the Physics SE or Astronomy SE?

My interests primarily pertain to Astrophysics (and Astrochemistry). This subject appears to have two masters: Physics SE and Astronomy SE. How do I decide where to post, and how would you characterize the astrophysics sub-community on each SE? Does double posting of Q's make sense? I will be pos...

discussion scope questions community-wiki duplicates

AngusTheMan

@NeuroFuzzy $y^{(n)}=f(x,y,y',\dots ,y^{(n-1)})$ has an equivalent 1st order PDE $\partial x +y'\partial _y+y''\partial y'+\dots +\f\partial _y^{n-1})\phi =0$.

sorry, PDE should be $(\partial _x+y'\partial _y+y''\partial _{y'}+\dots +\phi \partial _{y^{(n-1)}})\phi=0$

DanielSank

11:39 PM

Hi, everybody.

0celo7

@DanielSank hey

doing homework

what's up with Dr. Google Ca$h Money?

HDE 226868

@0celo7 Seems like you're always doing homework.

DanielSank

@HDE226868 He is in college, you know.

@0celo7 Oh you know.

HDE 226868

@DanielSank Well, yes, but I figured that college students step outside the dorm and/or classes at least once a day.

DanielSank

@HDE226868 Only to get to the next lecture

0celo7

11:44 PM

@HDE226868 I just got home!

And I still have physics, ODE and English homework

::faints::

Mike Edenfield

on my flight back and forth to Baltimore this weekend I read the entire of The Theoretical Minimum and discovered that I don't remember a thing from my calculus classes in college :(

0celo7

@HDE226868 I am a slow homework person, particularly because of this damn chat

Mike Edenfield

I am theoretically below-minimum :(

0celo7

we offer free tutoring lessons

for the low low price of one Steam game

Mike Edenfield

I'm gonna put on Dr. Susskind's Stanford YouTube videos while I sleep and see if osmosis works.

0celo7

11:47 PM

you might pick up a love of pastries and apples

Mike Edenfield

yeah I'm afraid I'll just get hungry.

0celo7

just read The large scale structure of space-time by Hawking and Ellis. All you need is a bit of basic algebra and calcul...

Well that joke doesn't work on you!

Mike Edenfield

I remember the point of calculus and differential equations, I just can't do them in my head anymore.

DanielSank

Has anyone ever asked for explanations of unexplained experimental data on this site?

0celo7

(the joke is that it's an extremely difficult monograph on general relativity and spacetime topology but the preface makes it seem like something a freshman could toy around with)

Mike Edenfield

11:50 PM

when he starts throwing out Hessian matrices I just started skimming :)

0celo7

oh that's just the matrix of second partials

Mike Edenfield

yeah.

0celo7

hardly used in real physics as far as I know

Mike Edenfield

he also does this thing that always throws me for a loop, when he switches back and forth between notational conventions at random.

I probably just need to read the whole thing again.

and maybe do the exercises. :)

0celo7

like what

what switcheroo confused you

Mike Edenfield

11:53 PM

he jumps back and forth between using vector notation vs. coordinate indices a lot. and between explicit time derivatives like dV/dt to implied time derivatives.

NeuroFuzzy

@AngusTheMan That's interesting. Is $f$ $\phi$?

0celo7

implied?

like dots?

Mike Edenfield

i dunno enough MathJax to know how to put dots over things.

0celo7

literally \dot{}

Mike Edenfield

i mean I understand them both and know they're exactly the same but when he jumps back and forth I always miss it.

0celo7

11:54 PM

mathjax is pretty intuitive

what exactly is the book about

Mike Edenfield

it's basically a written edition of a set of lectures he gave on classical mechanics.

supposed to be the "minimum" you need to get into physics at an amateur/self-taught/etc level.

he talks about the principle of least action and using Hamiltonians

none of which is stuff I learned in college physics :(

NeuroFuzzy

@MikeEdenfield ooh the susskind theoretical minimum? I love that one.

@MikeEdenfield his method of deriving the EL eqs is the same that Euler originally used!

Mike Edenfield

yeah I liked it, and I got his quantum physics book, too. but I took physics w/ calculus, including multi-variable calculus and DE's, in college.

0celo7

how did the gool ol Leonhard do it

Mike Edenfield

but I forgot all of it, so by the end of the book I was getting lost in the math.

NeuroFuzzy

11:57 PM

@0celo7 finding source, one min

@0celo7 eulerarchive.maa.org/docs/originals/E065h :P mostly, see table 1 figure 1 (page 15)

Basically, but in modern form, he breaks up $\int L$ into a bunch of finite pieces of the path

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