egg|nomz|egg 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.
<bofh> "Clark's Hypergolic Hands" sounds like the worst D&D artifact wepon
<bofh> ...oh, I should've read up one more line >_>
<soundnfury> Heh.
<Ellied> 1st-level conjuration: doppler radar. You gain instant knowledge of the dominant radial velocity and conductivity*angular size product of all creatures in a 1000-foot radius
<soundnfury> nah, doppler is 2nd level
<Ellied> at higher levels, you can take the fourier transform of the mixed signal and tell how many moving things are present
<soundnfury> 1st-level just gets distance from ct/2
<Ellied> distance seems more advanced without conductivity/size information
<soundnfury> I'm imagining 1st-level (or maybe cantrip, idk) as being like Chain Home
<soundnfury> i.e. you get the distance and a very vague notion of direction and return-amplitude
<soundnfury> ("Hello, Sector Control? Goblins, 100+.")
<Ellied> I'm imagining this as just a general-threat-assessment type thing, so you don't have any idea where to shoot but can vaguely tell how many, how big, and how fast
<Ellied> or just how big and how fast at first
<Ellied> later you can start to tell how many and whereabout
<Ellied> or they could be nonconductive or smaller than a half-wavelength and you can't tell anything
<soundnfury> Also, they might have Window.
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<SnoopJeDi> "Next, instead of using something that acts like contours, let's try using contours!" damn, burn
<SnoopJeDi> I very much recommend that Borkin paper if you've not read it UmbralRaptor
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<UmbralRaptor> SnoopJeDi: I'm not sure I have.
<SnoopJeDi> hmm in hindsight it not be the "jet can kill someone" paper I'm thinking of anyhow
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<Ellied> yeah, so the SCP Wiki main IRC channel just had an argument over whether handwriting can correctly be called a "script," which got heated enough that it required moderator intervention
<Ellied> this is definitely a thing, which just happened
<soundnfury> Does it have its own Unicode block?
<soundnfury> !wpn Ellied
* Qboid gives Ellied an entangled spiral cut ideograph
<Ellied> clearly we need to draw a partition down the middle of the U+2XXXX plane and let one side be the handwriting-script zone and the other side be the handwriting-not-script zone, with a 512-codepoint demilitarized zone of assorted unrelated characters between the two territories.
<Ellied> !wpn soundnfury
* Qboid gives soundnfury a fall tadpole
<soundnfury> yeah but you know the handwriting-not-script folks will try to develop combining diacritical weapons
<Ellied> U+2FF5D (COMBINING PLUTONIUM HEMISPHERES) was famously referred to as the "Demon Glyph" after it was involved in three separate diacriticality incidents.
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<soundnfury> Ellied: xD
<soundnfury> (only just saw it)
* egg|z|egg stabs osmosis
egg|z|egg is now known as egg
* egg just spent a couple of hours washing and handling salted ducks
<egg> UmbralRaptor: diapsid legs!
<kmath> <diodebot> Gröbner-basis-blocking indexable diode (GBBID)
<egg> bofh: I'm not familiar with geometric algebra so whenever I hear that I think "algebraic geometry" instead >_>
<egg> bofh: are we bad at naming fields,
* egg wonders whether "topological algebra" is a thing..
<egg> ah great you have combinatorial commutative algebra as well as algebraic combinatorics and the algebraic method in combinatorics
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<bofh> egg: "are we bad at naming fields" yes, yes we are
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<SnoopJeDi> fields, he he
<UmbralRaptor> egg: where's the cat?
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<Ellied> huh, looks like someone broke tweepy, so diodebot is RIP for now
<egg> Ellied: aaaa
<egg> UmbralRaptor: it's the cow lookalike
<egg> on top of a pile of slabs of sorts
<egg> UmbralRaptor: left of centre
<UmbralRaptor> Ah, under the balcony.
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<UmbralRaptor> Fiora: Does a program that involves taking the SAT as a 7th grader count? https://twitter.com/FioraAeterna/status/942475420301004800
<kmath> <FioraAeterna> -- i'm *fairly certain* at least a couple of my kin follow me here. reply if you took the fucking Hopkins Talent S… https://t.co/YCJcjNSjqO
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<egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a lambda dodecahedron
<egg> !wpn Fiora
* Qboid gives Fiora an unremarkable prepromorphism
<kmath> <mirihawke> @FioraAeterna There's less of us than there are astronomy majors. Though I guess to an astronomy major (populatio… https://t.co/ghJzXKBmmm
<egg> !wpn Ellied
* Qboid gives Ellied a poisonous standing wave ratio
<UmbralRaptor> egg: eh, I was in something a bit different. I think Duke University was involved? <_<
<egg> UmbralRaptor: yes, but you're an astronomer,
* UmbralRaptor pokes reality with a stick.
<egg> UmbralRaptor: realitea.
<egg> Norgg: we haven't seen teabot in a long time :'(
<UmbralRaptor> egg: Is coffee imaginary, then?
<APlayer> More like complex
<Ellied> diodebot is good again, it was just a silly new dependency that was easy enough to pull in
<UmbralRaptor> ∫|coffee|² == ?
<UmbralRaptor> Ellied: yay
<APlayer> UmbralRaptor: -1 x
<UmbralRaptor> APlayer: AAAAAAAAA
<Ellied> UmbralRaptor: uh, d what?
<UmbralRaptor> Hrm. dcaffeine?
<APlayer> UmbralRaptor: Okay, now what did I do wrong? :D
<UmbralRaptor> Well, if it's QM, usually a space derivative.
<APlayer> That was an integral?
<APlayer> Also, I have no idea if I got the maths correctly, so this was a legit question
<APlayer> What did I do wrong?
* Ellied stabs android not having an input method that supports user-defined compose sequences
<Ellied> I at least have the greek keyboard enabled and the default one supports a lot of less-common symbols like °,÷,×,•, and √, but no integral or partial derivative easy to hand
<UmbralRaptor> APlayer: I was thinking in QM, so getting a negative probability is Very Bad.
<APlayer> Heh, alright
* UmbralRaptor uses Multiling O keyboard, and edited in a bunch of characters.
<APlayer> But ∫ |i|² dx = -x, right?
<UmbralRaptor> +x, in that |i| = 1
<APlayer> Ah, that was the part I was uncertain about
<APlayer> What happens when you do |a + bi|? Is that like a vector magnitude?
<APlayer> Anyway, I've got to go now. See you!
<UmbralRaptor> \o
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<kmath> <0x47DF> I'm in a weird mood. Send me pictures of your old calculators. Cats also accepted if you don't have old calculators.
<egg> I can probably dig up an hp-67
<UmbralRaptor> Define "old"
<egg> UmbralRaptor: I'm pretty sure hp-67 counts
<kmath> <3PSboyd> Smol cat, now large cat https://t.co/PHgfjx5I7o
<egg> whitequark: we need котpics and котяpics
<egg> !wpn whitequark
* Qboid gives whitequark an extensional monad
<kmath> <eggleroy> ? Christoffel, the new release of Principia, is out. A vessel can no longer pass through a planet unscathed by clos… https://t.co/YdLnyCX5dF
<egg> ow it got truncated
<egg> …ing its eyes and assuring itself that small time steps aren't real as it rams the surface.
<egg> >_>
<egg> !wpn bofh
* Qboid gives bofh an isentropic monoid
<UmbralRaptor> egg: does the readme include scary GR?
<egg> sadly no
<egg> UmbralRaptor: I mean we *have* been discussing distinguishing vectors and covectors (thereby making the metric explicit) because of https://forum.kerbalspaceprogram.com/index.php?/topic/162200--/&page=36&tab=comments#comment-3231809 but that's in the very distant future if anything
<UmbralRaptor> Alternative comment: New Principia release! This is not a Dril!
<egg> :D
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<egg> !wpn armed_troop
* Qboid gives armed_troop a sectoral collapsar
<kmath> <eggleroy> ? Christoffel, the new release of Principia, is out. A vessel can no longer pass through a planet unscathed by clos… https://t.co/YdLnyCX5dF
<egg> armed_troop: we release every new moon now
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<armed_troop> oh nice
<egg> armed_troop: and I can now build on mac myself because I have a corp mac
<armed_troop> ooh nice
<egg> (had some versions where lamont did the build, that worked too)
<armed_troop> btw mac dynamic libs are typically named .dylib not .so :D
<armed_troop> but it's fine
<egg> yeah, but it works
<armed_troop> I've just been awfully busy
<egg> I could probably call it .principia
<armed_troop> started graduate program, took an engineering analysis class that crams too much into a single semester :P
<egg> meh, classical mechanics fit in 2 hours and quantum mechanics in the next two :-p
<egg> (yes I had a lecture like that)
<egg> (yes it was good)
<armed_troop> hahaha
<egg> armed_troop: fyi there are logs for this channel thanks to Thomas's Qboid running whitequark's logger: https://logs.tmsp.io/kspacademia
<UmbralRaptor> egg: Newtonian sure, but Hamiltonian/Lagrangian mechanics?
<egg> yes
<bofh> UmbralRaptor: I actually think it takes less time to *start* with Hamiltonian or Lagrangnian mechanics and introduce Newtonian as a special case of the former.
<egg> UmbralRaptor: start at the bottom of p. 19, with section 6.1 Classical Mechanics https://github.com/eggrobin/MMP-II-Lecture-Notes-Spring-2013/blob/master/MMPII.pdf
<egg> this is followed by section 6.2 Quantum Mechanics
<UmbralRaptor> that works
<egg> classical mechanics ends at the top of page 22, with "In the case h(q,p)=1/2(p^2/m+mω^2q^2), [...] we have the harmonic oscillator. And that's classical mechanics. Now on to quantum mechanics."
<egg> (there's a typo it says p^2/n)
<egg> blame the egg
<UmbralRaptor> git blame egg
<egg> "If you had fallen alseep at the beginning of the previous hour, and you thought QM was just a misspelling of classical mechanics, you might think the lecture had just started."
<UmbralRaptor> “No human being can work with
<UmbralRaptor> something other than a polynomial anyway.”
<egg> :D
<egg> UmbralRaptor: these lectures are *extremely* quotable
<egg> Trubowitz!
<UmbralRaptor> hrm
<egg> also you have some snark at string theory at every page
<egg> UmbralRaptor: wait no, classical mechanics and quantum mechanics were in the same lecture
<egg> so 1 hour each
<egg> armed_troop: unrelated, icymi, https://twitter.com/eggleroy/status/838756704401641473
<kmath> <eggleroy> <Majiir> I really am imagining egg just drowning in a sea of papers https://t.co/P2iqkDT7CN