02:00 - 14:0014:00 - 00:00

2:29 AM
> HAIR
Clearly an acronym

2:59 AM
clearly

3:25 AM
Hey I messed with pytorch over the weekend. After the initial pains, it seems pretty neat. And by initial pains, I mean I’m an idiot

3:49 AM
@danielunderwood lol how many ppl can get an ML pkg to do something? so what kind of data are you working with? :)

2 hours later…
5:25 AM
@danielunderwood better than tensorflow amiright

2 hours later…
6:55 AM
Btw @DanielSank it appears there's a high chance that I'll be at a KITP workshop for several weeks next year
That's right in your neck of the woods, right?

7:29 AM
@EmilioPisanty Indeed so. I'll look forward to that.

7:46 AM
@vzn 😲😲😲

8:37 AM
morgen
@ACuriousMind All people who are interested in spacetime engineering tend to be insane rly
I won't name names but I'm thinking them very loudly :V
okay maybe I'll name them a little
this one talks about UFOs and mind powers

8:53 AM
@Slereah Harold White? To a lesser extent Matt Visser? They are lovable nutcases though i.e. they'd be great fun to chat with over a few beers.

Visser seems alright
Krasnikov seems fairly sane although he is really into it
Everytime there's a theorem forbidding wormholes/warp drives/time travel, he publishes a paper saying WAIT
Consider this counterexample!
Eric Davies seems mostly sane in what he writes but he has very suspiscious interests

Harold White has managed to get NASA to pay him to be insane, though I imagine he won't be replaced when he leaves ...

Like if an experiment of a crazy thing has negative results he will most definately say so
But he is very persuaded UFOs are a real thing
I don't want to say he's insane but he did propose to use a nuke for a wormhole experiment
A very poorly thought out one

9:41 AM

@PM2Ring I think G. Smith's answer has pretty much covered it and I don't have anything to add. Safesphere's views on GR are some way from mainstream.

@JohnRennie Fair enough. And I understand your not wanting to get into a HNQ "showdown" against Safesphere. I certainly agree that Safesphere has views on GR, and many other topics, that are some way from mainstream. And he has a very annoying habit of posting them in comments, where they can't be downvoted.

:-)

Hey @RyanUnger

It's kinda cute that Arpad is the OP. He used to annoy me with all his slightly off answers. But I get the impression that he's trying very hard to rise above the half-truths he learned from popsci. His answers are slowly getting better, and his questions seem to be focused on getting to the real physics behind the popsci myths.

10:09 AM
yo @JohnRennie
any thoughts on how to produce shiny text to describe light of multiple colours other than calling it a 'rainbow'?
I'm looking for a good sci-comm-y word for it that describes a discrete palette with a finite number of colours instead of a continuum

coruscant?
Ah, not coruscant then.
polychromatic?

@JohnRennie ugh
this is for the title of a piece that faces the general public
hence the need for "shiny" ;-)
kaleidoscopic, maybe?

I was about to suggest kaleidoscopic though that doesn't imply discrete colours.

I think I'm going to suggest just using "multicoloured"
anyways, the piece will be out in a few days, I'll post it here when it is

prismatic?

10:18 AM
:-|
for all its glories, this part of the English language is strangely... monochromatic?
=P

Polychromatic? Although that doesn't necessarily imply quantized chromaticity.

@PM2Ring "polychromatic" is poison in a headline =|

10:30 AM
I suppose so. And it could be talking about music, rather than light.

10:44 AM
I rendered that using POV-Ray a decade or so ago. If you look closely, you'll see that the colours are quantized. That's because POV-Ray's dispersion algorithm works by shooting a bunch of rays of different frequency.

11:00 AM

> Web Page Blocked!
> You have tried to access a web page which is in violation of your internet usage policy.

11:14 AM
The chatrooms have been not connecting, or very slow, for several hours.

there you go

And it's not just the rooms themselves, the transcript pages are also very slow.

2 hours later…
1:41 PM
Oh boy. The numerology guy from yesterday has been busy with the comments. physics.stackexchange.com/questions/481404/…

Anybody please...Is it possible to prove that the center of mass of the earth-moon system moves in an elliptical path around the sun using Keplers laws?

@user8718165 Assuming some approximations, yes

@Slereah thanks.. what are those approximations?

You basically have to treat it as a two body problem
well I guess technically as two two-body problems
I think you just need to assume $M_{\text{sun}} \gg M_{\text{earth}} + M_{\text{moon}}$

@Slereah we'll consider the COM of the earth-moon system as one body and the sun second...this way?

1:49 PM
basically, yes

@Slereah okay thanks!

@PM2Ring hundreds of thousands of equations? That's a lot of time & work invested...

02:00 - 14:0014:00 - 00:00