raptop changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
<UmbralRaptop> char 🚗;
<SilverFox> epic
<UmbralRaptop> aaaaaaa
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<mofh> FOR THE LOVE OF ALL THAT IS HOLY, DON'T TRY RIDING ONE OF THOSE LIME PIECES OF SHIT WHEN YOU ARE TOO DRUNK TO STAND
<mofh> ESPECIALLY DO NOT TRY DOING THIS ON THE FUCKING *SIDEWALK*
<SnoopJeDi> a public menace
<mofh> I DO NOT CARE IF YOU WANT TO DISCOVER FIRSTHAND ALL THE FUN DYNAMICAL INSTABILITIES THOSE THINGS HAVE, BUT I'D RATHER NOT BE PRIVY FIRSTHAND TO YOUR DISCOVERY PROCESS WHEN IT HAPPENS.
<mlbaker> "lime pieces of shit"?
<mofh> No love, and a prolly badly pronounced "va te faire enculer" yelled at your general direction, mofh.
<mlbaker> lmao wtf ist his
<mlbaker> waterloo scooter bs prototype 2.0?
<mofh> No, the Waterloo Scooter BS things are literally the same everywhere.
<mofh> Like that is their international product.
<mlbaker> oh wait, so it *is* the same?
<mlbaker> LOOOOL
<mofh> YES.
<mofh> average lifetime of one of those in Paris is twenty eight days
<mofh> they're a decent source of BDLC motors and a shitty source of 18650s, in a pinch at least.
<mlbaker> wow i didn't know this was an actual thing
<SnoopJeDi> It's like dockless bikes but way worse
<mlbaker> i thought it was like some waterloo bro who went to silicon valley
<mlbaker> and started this company
<mlbaker> and decided to run the first pilot at UW
<mofh> mlbaker: no it's international unfortunately
<mofh> mlbaker: like this is why my reaction to seeing one of those in UW was "OH GODS CAN I NOT ESCAPE THIS SHIT" since I first got familiarized to them in Paris
<mofh> where they are a fucking menace
<mlbaker> haahahah
<SnoopJeDi> there's a guy in my neighborhood who is a quadriplegic and it brings my piss to a boil whenever I see one of the local dockless bikes in the middle of a sidewalk thinking of him
<SnoopJeDi> Wish you could report bikes left in stupid positions etc. and boot the dickheads who abuse the share
<mofh> jfc that's even worse than all of my complaints, honestly.
<mofh> and mine mostly center around clueless dipshits, often tourists, going way too fast on those things, often on the sidewalk, and barely missing or outright hitting other people.
<SnoopJeDi> In defense of the public nuisance business, there aren't _any_ sidewalks where I most often see him walking his guide dog
<SnoopJeDi> and where there are sidewalks, they're often blocked by trash bins or brush trimmings or other stupidity
<SnoopJeDi> you'd think the ADA straight-up doesn't exist based on local governance.
<SnoopJeDi> I really hope we don't get the scooters
<SnoopJeDi> mofh, as a palate cleanser, the bikes have been *very* good for the local population who doesn't have cars, and the city has leaned into the fact that people have been using the bikes to get to/from the grocery store
<SnoopJeDi> Particularly when we had ofo here. When they closed up shop (perhaps this was the plan all along?), the city established a program to give the bikes away.
<mofh> I mean I contend there *is* a use for ride-share scooters, especially in places where the local transit is shit (hint: Paris is very much not one of those places). But the way Lime manages everything about it is like, the worst possible way to implement it possible.
<SnoopJeDi> there definitely is, particularly the tourist market they target
<SnoopJeDi> but our tourists are mostly assholes coming to relive their glory days at college, and the policies are just gross. The companies do not care about the cities they're exploiting.
<mofh> egg: my favourite fr-CA thing is that "dépanneur" means, well, épicerie.
<SilverFox> wait up
<SilverFox> I google epicerie and its grocery stores, but depannuer is corner stores
<SilverFox> convenience stores
* UmbralRaptop misread that as Californian French
<mofh> I mean in fr-FR, dépanneur is repairman service,
<SilverFox> jesus I would not like to see what californian french is
<SilverFox> yeah it translates as repair service, or "Troubleshooter"
<SilverFox> "au Québec, une petite épicerie de proximité ou une supérette." ah
<SilverFox> how does this even happen, what is the etymology of that
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<egg|work|egg> !wpn mofh
* galois gives mofh a hyperbolic soufflé
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<egg|work|egg> !wpn whitequark
* galois gives whitequark a relay bronze cube
<egg|work|egg> !wpn mofh
* galois gives mofh a integral
<egg|work|egg> !u ማክሰኞ ፣
<galois> ማ: U+121b ETHIOPIC SYLLABLE MAA
<galois> ክ: U+12ad ETHIOPIC SYLLABLE KE
<galois> ሰ: U+1230 ETHIOPIC SYLLABLE SA
<galois> ኞ: U+129e ETHIOPIC SYLLABLE NYO
<galois> ፣: U+1363 ETHIOPIC COMMA
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<UmbralRaptop> The integral is a polynomial, but we're going to claim that's too difficult and break out Stokes' Theorem
<SnoopJeDi> !wpn -add:adj difficult
<galois> Added adj 'difficult'
<SnoopJeDi> !wpn -add:adj analytic
<galois> Added adj 'analytic'
<SnoopJeDi> !wpn -add:adj non-analytic
<galois> Added adj 'non-analytic'
<SnoopJeDi> Today is Hans Bethe's birthday!
<UmbralRaptop> !wpn -add:adj numeric
<galois> Added adj 'numeric'
<UmbralRaptop> 🎉
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<SnoopJeDi> mofh, woke up at 3 last night and couldn't get back to sleep until 6, as I random-walked the web in frustration I came across this, which you will likely enjoy if you've not seen it before: https://imgur.com/gallery/l0q7D
<UmbralRaptop> cute
<UmbralRaptop> (That's a good thing)
<SnoopJeDi> :)
<SnoopJeDi> ESO live stream of the eclipse is up: https://www.youtube.com/watch?v=1a1gsB_aoT0
<kmath> YouTube - European Southern Observatory (ESO) Live Stream
<mofh> !wpn egg|work|egg
* galois gives egg|work|egg a scary spear
<mofh> hrm, wouldn't a hyperbolic soufflé be considered bad? since that sort of structure would primarily happen during structural collapse
<UmbralRaptop> FRLW soufflé with negative curvature
<SnoopJeDi> Heh, I coincidentally happen to have the wiki page for FLRW open in a tab right now. A college friend emailed me to ask a question about cosmic expansion and it has turned into An Overly Long Reply
<UmbralRaptop> The sun is rather boring right now =\
<_whitenotifier-5dfc> [Principia] eggrobin pushed 1 commit to master [+0/-0/±1] https://git.io/fjKQg
<_whitenotifier-5dfc> [Principia] eggrobin c7df9f4 - Announce Fermat.
<SnoopJeDi> solar minimum a e s t h e t i c
<mofh> UmbralRaptop: indeed
<mofh> it's making RF propagation on HF annoying, too.
* UmbralRaptop isn't sure if the current solar minimum is deeper than last cycle's
* UmbralRaptop summons the ghost of Maunder
<SnoopJeDi> mofh, huh, really? What's the story there? (I know ~nothing about RF)
<SnoopJeDi> I would assume a quiescent Sun would be a good thing, but is HF dependent on solar "stirring" of some portion of the atmosphere?
<mofh> HF is dependent on reflecting off the ionospheric F2 layteyetr
<SnoopJeDi> oh, huh. Is it literally just "you must construct additional pylons^Wplasma?"
<egg|cell|egg> !u layteyetr
<galois> Whoa now, that's too many characters, hoss
<egg|cell|egg> !u teyetr
<galois> t: U+0074 LATIN SMALL LETTER T
<galois> e: U+0065 LATIN SMALL LETTER E
<galois> No info for U+007f (I only know about Unicode up to 9.0)
<galois> No info for U+007f (I only know about Unicode up to 9.0)
<galois> No info for U+007f (I only know about Unicode up to 9.0)
<galois> y: U+0079 LATIN SMALL LETTER Y
<galois> e: U+0065 LATIN SMALL LETTER E
<mofh> the F2 layer altitude is purely a property of upper ionospheric eleggtron density
<galois> t: U+0074 LATIN SMALL LETTER T
<galois> No info for U+007f (I only know about Unicode up to 9.0)
<galois> r: U+0072 LATIN SMALL LETTER R
<mofh> SnoopJeDi: yep
<SnoopJeDi> neat
<SnoopJeDi> I will stick that in my solar wind talk for next month :)
<mofh> neat!
<kmath> <Lydenwut> "Hikari tried it with knifes, and that's ok. ⏎ But what to do when you don't have one? Well, I guess a sword is a big… https://t.co/hCX2sRsiuL
<SnoopJeDi> The local astronomy on tap group has been running long enough that I don't feel guilty poking my nose in to volunteer for a talk as a non-astronomer
<kmath> <0xDBFB7> https://t.co/mN51anQXOT
<SnoopJeDi> and particle pew-pew in space is 1) not something anyone here is working on, so no toe-stepping concerns, 2) close enough to accelerators that I can get away with pretending like I know what I'm on about
<UmbralRaptop> SnoopJeDi: jets from black holes are basically accelerator physics, right?
<SnoopJeDi> (it'll probably be solar wind + misc. space weather)
<SnoopJeDi> UmbralRaptop, yup! Probably one slide's worth in the intro, I think sticking close to home will make it more relatable to a public audience.
<SnoopJeDi> But our cyclotron is all about those sorts of reactions
<SnoopJeDi> Just recently attended a friend's defense on α-capture rates in ²²Ne(α,n)²⁵Mg, in fact
<UmbralRaptop> hrm
<SnoopJeDi> (although I think that's much more about hydrodynamics)
<SnoopJeDi> mofh, relatedly, I may sometime in the next month pick your brain for a slide or two on Voyager :)
<SnoopJeDi> Or possibly DSN, if space weather has a substantial impact there
<mofh> Not hugely, outside of solar conjunction being a pain to work with.
<SnoopJeDi> Makes sense, Space Is Big™?
<SnoopJeDi> (and it's already such a damned pain)
<mofh> More like the frequencies in question aren't affected badly enough to cause *problems* outside of minor changes in noise PSD.
<mofh> X-band is very nice overall
<SnoopJeDi> speaking of X-band
<SnoopJeDi> I have a placeholder slide for the nuclear electron flux mitigation thing that is all-caps reminders that I decided a long time ago that I shall not have more than one slide about it because nukes are depressing
<SnoopJeDi> (the relevant DoD crazy is X-band)
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<egg> !wpn whitequark
* galois gives whitequark a egg
<egg> !wpn mofh
* galois gives mofh a bromine carbon foil
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<egg> mofh: meow
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<egg> mofh: meow
<UmbralRaptop> egg && mofh: caw
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<UmbralRaptop> Is now a bad time to ask about problems that I have going over old quals? (eg: http://complex.gmu.edu/phd/exam/QM-Aug-2018.pdf)
<B787_300> UmbralRaptop: you are Qualing today?
<UmbralRaptop> #2 is fine, for #1 I have the eigenvalues, but unsure with eigenfunctions, and am probably missing a bunch for the time evolution
<UmbralRaptop> B787_300: well, studying for them
<B787_300> when are you taking them?
<B787_300> i like "The exact calculation is feasible in an exam, but long and perilous - avoid at all costs."
<B787_300> also i have no idea how to do any of those questions
<UmbralRaptop> So, uh, for 2 you can literally grab an equation out of the textbook. I think the perilous part is calculating an inverse hyperbolic sine?
<UmbralRaptop> which lead to https://photos.app.goo.gl/rAi8jWM1cb4DSpLG6
<UmbralRaptop> As for problem 1, https://photos.app.goo.gl/UJs2SxJr4Y16n1mNA
<UmbralRaptop> (You end up hard-memorizing what form certain eigenvector/eigenvalue interactions take
<UmbralRaptop> )