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
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<egg|zz|egg> whitequark: oh that's also one of порошок's names https://twitter.com/whitequark/status/1114793675782070272
<kmath> <whitequark> @tef_ebooks we call the fat cat "roskosmos" because there's a cat house thingy that looks vaguely like a rocket and… https://t.co/c6t1Y1oj66
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<oeuf> mofh: meow
<kmath> <sarahclazarus> imagine baking fucked up bread ONCE when you’re in a huge rush and centuries later your descendants are still gathe… https://t.co/Gk0Fv6FsgS
<oeuf> !wpn mofh
* galois gives mofh a hyperbola
<UmbralRaptop> oeuf: Also, celery dipped in salt water is tasty ¯\_(ツ)_/¯
<mofh> !wpn oeuf
* galois gives oeuf a pointy prism
<mofh> oeuf: miaou
<oeuf> UmbralRaptop: in a similar vein i suppose https://en.wikipedia.org/wiki/Emmaus is because he broke the bread in a distinctively weird way,
<galois> [WIKIPEDIA] Emmaus | "Emmaus (Greek: Ἐμμαούς, Emmaous Latin: Emmaus; Hebrew: אמאוס; Arabic: عمواس‎, ʻImwas) is a town mentioned in the Gospel of Luke from the New Testament. Luke reports that Jesus appeared, after his death and resurrection, before two of his disciples while they were walking on the road to Emmaus.Its geographical..."
<oeuf> !wpn -add:wpn bread
<galois> Added wpn 'bread'
<oeuf> !wpn -add:adj breaded
<galois> Added adj 'breaded'
<oeuf> !wpn whitequark
* galois gives whitequark a newspaper
<oeuf> it gave you one yesterday already, didn't it
<oeuf> mofh: so have you looked at the IGS mirrors
* oeuf bites mofh
<kmath> <tas121790> @10Plus20Birdy @mcmansionhell His ego
<mofh> oeuf: no, like I said this week has not been a good time for, well, anything for me.
<mofh> poke me on monday
* oeuf pokes mofh
<kmath> <stephentyrone> This guy. https://t.co/oNddSLH2pp
<oeuf> sadly not saying much about floating-point arithmetic this time
<mofh> damn.
<oeuf> mofh: stupid spherical coords/rotating reference frame question
<oeuf> mofh: if i have an acceleration in a nonrotating frame, how do i compute the resulting longitudinal acceleration (in a frame that happens to be rotating)
<oeuf> mofh: is it just the component in the direction of positive longitude divided by the radius?
<oeuf> or does the rotation come into play somewhere
<mofh> 02:08:12 <@oeuf> mofh: is it just the component in the direction of positive longitude divided by the radius?
<mofh> I'm pretty sure that yeah, that suffices.
<oeuf> okay so i might have found a bug, maybe
<mofh> oh?
<oeuf> or i incorrectly copied a formula for capderou
<oeuf> mofh: still trying to figure out where the geopotential is broken
<oeuf> phl tried poking at phobos and deimos, because there SRP and GR can hopefully be neglected and Mars is shaped like a potato
<oeuf> mofh: and beyond C22 S22 it's not clear that the geopotential (areopotential?) improves things, and it converges to a residual which is still pretty high
<oeuf> ;rpn 0.000646575 0.000216151 /
<kmath> oeuf: 2.991311629370209
<oeuf> interestring
<oeuf> ;rpn 0.000646575 0.0002155 /
<kmath> oeuf: 3.000348027842227
<oeuf> hmmmmmmm
<oeuf> the numbers in Capderou are consistent with https://www.researchgate.net/figure/Longitude-acceleration_fig1_329074503
<mofh> Huh, iiiiiinteresting.
<egg|zz|egg> (or a missing factor or n+1 or m+1 or something)
<egg|zz|egg> mofh: then again it might be between the documentation and the code
<egg|zz|egg> mofh: it's weird though because we have a test vector and we compare against another implementation
<egg|zz|egg> so the factor of 3 would have to apply to all of those, on top?!
<egg|zz|egg> that makes little sense
<egg|zz|egg> also J2 is probably correct
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<mofh> J2 is *definetly* correct as far as I can tell
<mofh> and yeah I'm... I need to double-check what the normalization factors are supposed to be first.
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<kmath> <eisoch> The real usage for 𡌂 U+21302 has been found in Fengkai County, Guangdong Province. https://t.co/zYxSS8glFG
<rqou> context?
<rqou> is this a Cantonese-only word?
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<kmath> <eisoch> We don’t have the G-Source reference for 𡌂 U+21302, which is an Ideograph for the western Yue-dialect usage, and th… https://t.co/CluI7CyCud
<egg|zz|egg> rqou: btw i had a question
<rqou> oh lolol
<rqou> yeah, apparently VPNs are ladders
<egg|zz|egg> rqou: unfortunately phl tried making an account on 百度网盘 and it doesn't seem to want swiss phones
<egg|zz|egg> do you have a 百度网盘 account
<rqou> nope
<rqou> doesn't seem to like American phones either
<rqou> I tried signing up using WeChat and got yet another different error
* egg|zz|egg doesn't even have a wechat account
<rqou> someday I probably need to open a Chinese bank account just to link it to WeChat to get extra blessed
<egg|zz|egg> rqou: speaking of interesting payment methods, apparently in VN samsung pay is a thing
<rqou> ("mainland" accounts are blessed compared to foreign ones, and "mainland" accounts with payment set up are extra blessed)
<egg|zz|egg> rqou: unrelated, IPA fun https://twitter.com/eggleroy/status/1119546417566056448
<kmath> <eggleroy> @chordbug majn ˈvɛɹiz ˈkwajt œ bit diˈpɛndiŋ ɔn hɑw ˈtajœd aj am, ðø mɔʁ tajœʁd ðø fʁɛnʃjœʁ, gɛtiŋ ʁidikylus if aj ɛm œp at fɔʁ in dø mɔʁniŋ
<egg|zz|egg> rqou: this also makes transcribing my accent difficult, since i have to figure out how much i'd botch things if i were speaking at the moment,
<rqou> uh, my IPA skills are pretty rusty
<rqou> but neat
<egg|zz|egg> rqou: but [ɹ] turning to [ʁ] in the evening is definitely something that mofh has noticed
<egg|zz|egg> wait, where is bofh
<egg|zz|egg> mofh
<egg|zz|egg> *ofh
<rqou> wat, [ʁ]?
<rqou> oh wait, you're a francophone
<egg|zz|egg> ɛʁku : jɛs aj ɛm œ fʁɑ̃kɔfɔn
<egg|zz|egg> (also yes i read rqou as [ɛʁku], not sure how it's supposed to be read)
<rqou> nope, I intend it to be read as individual letters
<egg|zz|egg> [ɛʁky.o.u]
<rqou> ...
<egg|zz|egg> or maybe a triphtong, [ɛʁkyou]!
<egg|zz|egg> wait no
<egg|zz|egg> [ɛʁkyoy] of course
<rqou> anyways, it's slep time for me
* egg|zz|egg pets rqou
* rqou purrs
<egg|zz|egg> ;rpn 0.000846663 -0.000491585 /
<kmath> egg|zz|egg: -1.722312519706663
<egg|zz|egg> ;rpn 9.49766e-06 2.58919e-05 /
<kmath> egg|zz|egg: 0.366819738991731
<egg|zz|egg> ;rpn -0.000209586 -3.56226e-05 /
<kmath> egg|zz|egg: 5.883512152397635
<egg|zz|egg> ??????
<egg|zz|egg> ;rpn 9.49766e-06 3.16552e-06 /
<kmath> egg|zz|egg: 3.00034749425055
<egg|zz|egg> ;rpn -0.000209586 -6.98539e-05 /
<kmath> egg|zz|egg: 3.000347868909252
<egg|zz|egg> ;rpn -4.81517e-05 -1.60487e-05 /
<kmath> egg|zz|egg: 3.000348937920205
<egg|zz|egg> ;rpn 6.84701e-05 2.28208e-05 /
<kmath> egg|zz|egg: 3.00033741148426
<egg|zz|egg> O_o
* egg|zz|egg meows at whitequark
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<mofh> that was mildly annoying
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<oeuf> mofh: meow
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<egg|zz|egg> what, we use those in principia https://twitter.com/0x3f00/status/1119958071093223424
<kmath> <0x3f00> @whitequark User-defined literals for strings are not implemented in MSVC, what a pity.
<egg|zz|egg> whitequark: people seem to consistently be confused about what is and is not in MSVC
<mofh> oeuf: miaou
<egg|zz|egg> whitequark: mind you you have fancier user-defined string literals in C++20, those are probably not in yet (but i wouldn't expect them in clang yet either)
<egg|zz|egg> s/ex/eggs/
<galois> egg|zz|egg meant to say: whitequark: mind you you have fancier user-defined string literals in C++20, those are probably not in yet (but i wouldn't eggspect them in clang yet either)
<egg|zz|egg> !acr -add:VENμS Vegetation and ENvironment monitoring on a New Micro-Satellite
<galois> Definition added!
<egg|zz|egg> whitequark: mofh: ^ something something acronym
<egg|zz|egg> MICROSCOPE?
<egg|zz|egg> !acr -add:MICROSCOPE MICRO-Satellite à traînée Compensée pour l’Observation du Principe d’Équivalence
<galois> Definition added!
<egg|zz|egg> !acr -redef:VENμS !acr -add:VENμS Vegetation and Environment monitoring on a New Micro-Satellite
<galois> Definition added!
<egg|zz|egg> right it's New
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<oeuf> !u ϖ
<galois> ϖ: U+03d6 GREEK PI SYMBOL
<SnoopJeDi> mofh, do you understand the Americium character in that periodic table fandom album? I don't entirely. I get the references to fire, but not really the LiDAR or thorium energy (?) references.
<egg|zz|egg> mofh: how does newton's third law work with the effeggt of oblate bodies
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<mofh> /win 20
<mofh> egg|zz|egg: not sure, actually
<egg|zz|egg> mofh: i think that might be our problem
<egg|zz|egg> mofh: right now we take the force A/B due to eggstendedbodyness of A, and take the opposite as a force B/A
<egg|zz|egg> mofh: but if you're neggst to A
<egg|zz|egg> then you feel the forces from B
<egg|zz|egg> but not that acceleration that A feels that is due to eggstendedbodyness of A and handwave handwave newton 3rd
<egg|zz|egg> mofh: what does the hamiltonian actually look like for two oblate bodies
<egg|zz|egg> hamiltonon
<egg|zz|egg> s/non/nion/
<galois> egg|zz|egg meant to say: hamiltonion
<egg|zz|egg> mofh: also read your cat
<egg|zz|egg> it seems you haven't read your cat in a week,
<mofh> 20:00:16 < egg|zz|egg> but not that acceleration that A feels that is due to eggstendedbodyness of A and handwave handwave newton 3rd
<mofh> hrm i *think* i see your point (also doing this with forces is rapidly confusing me, can we just have a lagrangian or hamiltonian?)
<egg|zz|egg> mofh: well yes i would love that, what is the bloody hamiltonion
<mofh> i don't know let me reread a few chapters of Goldstein first >_<
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<egg|zz|egg> mofh: pretty sure that won't be in the usual teggstbooks
<mofh> Yes but I've forgotten a lot of background/techniques that I need to figure this out :P
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<UmbralRaptor> B787_300, egg|zz|egg: so apparently there's an Airbus office between Dulles and Udvar
<B787_300> That's not too surprising
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<UmbralRaptor> Also Orbcomm, but the Airbus one amused me more
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<oeuf> mofh: meooow
<SilverFox> have meme
<kmath> <evanmiltenburg> @tallinzen @shapkaa There's a similar story in David Crystal's autobiography "Just a phrase I'm going through," whe… https://t.co/3l2kgZDaUU
* UmbralRaptor throws sneks at the meme
<egg|zz|egg> mofh: hm, with given fixed axis and rotation rate (or given rotation model), H becomes time-and orientation dependent, so precisely the only symmetry that's *not* lost should be the one that gives conservation of p...
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<egg|zz|egg> hm it probably works the way we wrote it
<egg|zz|egg> blarg.
<egg|zz|egg> and the geopotential seems correct.
<egg|zz|egg> what is wrooooong