UmbralRaptor 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> … one of the other grad students just compared me to nomal O_o | <ferram4> I shall beat my problems to death with an engineer.
<Iskierka> can't do so immediately but would be willing to do so if you don't need it immediately
<egg|zzz|egg> Iskierka: 1.2.2 goo.gl/nFCah6, 1.3.1 goo.gl/LY6Rdu if you want to take a look
<soundnfury> !wpn egg|zzz|egg
* Qboid gives egg|zzz|egg a short conifer-like thyratron
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<QuantizedRaptor> egg|zzz|egg: Is the zzz operator hermitian? Unitary?
<bofh> https://pbs.twimg.com/media/DOtgexNVwAIMh3F.jpg:orig the official pop of Google?
<egg|zzz|egg> bofh: any thoughts on the failure of DoublePrecision.Consistencies mentioned in the second comment of #1624?
<Qboid> [#1624] title: Test failures on macOS | Built on macOS 10.13.1, Apple LLVM version 9.0.0 (clang-900.0.38), target x86_64-apple-darwin17.2.0.... | https://github.com/mockingbirdnest/principia/issues/1624
<egg|zzz|egg> (asking you because numerics :-p)
<egg|zzz|egg> QuantizedRaptor: aaaaaaaaaa
<soundnfury> QuantizedRaptor: no, it's hermetic and Unitarian.
<QuantizedRaptor> bofh: *facepalm* *steals*
QuantizedRaptor is now known as UmbralRaptor
* UmbralRaptor swings ⚚ at soundnfury
<egg|zzz|egg> !u ⚚
<Qboid> U+269A STAFF OF HERMES (⚚)
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<soundnfury> is that hermes trismagistus, or the other hermes?
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<UmbralRaptor> They seem somewhat convolved with each other?
<UmbralRaptor> But the staff is probably not trismagistus, so sadly not the relevant one.
<UmbralRaptor> strange rock is strange.
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<bofh> egg|zzz|egg: huh. not sure.
<kmath> <existentialcoms> we must imagine Sisyphus happy and also as an otter https://t.co/NORUgPbniH
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<SnoopJeDi> yes please
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<Iskierka> unexpected use for bluetooth: determining if phone was left upstairs by if laptop can reach it
<UmbralRaptor> Nice.
<kmath> <mcclure111> I've been trying, in my own projects, to push back against this by just dropping in the top level a file named "con… https://t.co/QnmTNbwR7U
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* egg goto ANBO
<egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor an imaginary checksum
<egg> !wpn whitequark
* Qboid gives whitequark a Аэрофлот compiler
<egg> !wpn Fiora
* Qboid gives Fiora a Darboux coffee/pilcrow hybrid
<egg> APO?
<Qboid> egg: [APO] => Apache Point Observatory
<egg> ARC?
<egg> !acr -add:ARC Astrophysical Research Consortium
<Qboid> egg: I added the explanation for this acronym.
<egg> !acr -add:ARCTIC ARC Telescope Imaging Camera
<Qboid> egg: I added the explanation for this acronym.
<egg> !acr -add:ARCES ARC Echelle Spectrograph
<Qboid> egg: I added the explanation for this acronym.
<egg> !acr -add:DIS Double Imaging Spectrometer
<Qboid> egg: I added the explanation for this acronym.
<egg> !acr -add:NICFPS Near Infrared Camera/Fabry–Pérot Spectrometer
<Qboid> egg: I added the explanation for this acronym.
<kmath> <diodelass> This is definitely how acronyms work, I'm not just a lazy programmer https://t.co/REsrAPOrvU
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<UmbralRaptor> !wpn egg
* Qboid gives egg a lithium cohomology-like soap
<UmbralRaptor> egg|train|egg: bolide!
<egg|cell|egg> Indeed
<kmath> <keyboardio> Ok. These Linear A keycaps look pretty cool. https://t.co/aUMj3aFGKz
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<egg|phone|egg> Bofh: how do you compute μ-b³n² where the difference cancels
* egg|phone|egg is filling the train trip with keplerian element conditions
<kmath> https://twitter.com/FioraAeterna/status/931047138460450817 <FioraAeterna> @Hikums it's so much more convenient than all the library science systems that literally everyone i know *who has a… https://t.co/UMyHepoWhB
<egg|phone|egg> !Wpn UmbralRaptor
* Qboid gives UmbralRaptor a x-ray triode
<UmbralRaptor> Weirdly, Harvard's ADS and Arχiv have better UIs than the actual journals.
<UmbralRaptor> Not sure vs sci-hub.
<UmbralRaptor> We're going to see black hole demographics soon, right? https://arxiv.org/abs/1711.05578
<egg|phone|egg> Oh nice another merger
<egg|phone|egg> And light too
<egg|phone|egg> Cows
<egg|phone|egg> Fast cows
* egg|phone|egg in a tgv
<UmbralRaptor> Merging cows?
<egg|phone|egg> Cow parallax
<UmbralRaptor> standard moos
<awang> !wpn -add:wpn merge conflict
<Qboid> awang: Weapon added!
<UmbralRaptor> !wpn awang
* Qboid gives awang a mu saw
<soundnfury> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a harmful canon
<UmbralRaptor> Time for heresy!
<awang> !wpn -add:adj pneumatic
<Qboid> awang: Adjective added!
<soundnfury> UmbralRaptor: oh, I was thinking more like a canon of books
<soundnfury> the collected works of DH Lawrence, perhaps, I'm sure some people would claim that's harmful
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<UmbralRaptor> hrm
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<egg|cell|egg> !Wpn Fiora
* Qboid gives Fiora an exponential cabbage/mandelbrofl hybrid
<kmath> <AwwwwCats> I put a heating pad out for the neighborhood cats. I think they like it. https://t.co/M05QgRFHMl
<bofh> !wpn egg|cell|egg
* Qboid gives egg|cell|egg a pyro projector
<bofh> 13:47 < egg|phone|egg> Bofh: how do you compute μ-b³n² where the difference cancels
<bofh> uhh. with difficulty. how large are b and n?
<UmbralRaptor> b = semi-minor axis?
<bofh> I assume so.
<UmbralRaptor> Also, our lab got a pair of i5 desktops. \o/
<UmbralRaptor> Not sure what n is.
<kmath> <JoeHilgard> Slide from today's lecture on epistemology https://t.co/7dB1vf0WAR
<SnoopJeDi> [excited clicking]
<egg|cell|egg> Bofh: ignore overflows
<egg|cell|egg> I care about condition
<egg|cell|egg> Not silly large numbers
* egg|cell|egg now in a second train towards ANBO
<SnoopJeDi> oh my, @congressedits has started attached screenshots of the revision diff to its tweets
<egg|cell|egg> !Wpn bofh
* Qboid gives bofh an underclocked Orcrist
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<bofh> egg|cell|egg: I mean relative to each other and to \mu, silly :P
<UmbralRaptor> ;8ball is algebra a Lie?
<kmath> UmbralRaptor: Yes
<e_14159> I don't think Algebra is a lie group?
<egg|cell|egg> Bofh : uuh they are incommensurate, grav. Param, semiminor axis, mean motion
<UmbralRaptor> Well, I'm currently struggling with QM spin, so it's all Lie algebra?
<SnoopJeDi> If there were a Schoolhouse Rock song about it, it'd be Commutation Station
<egg|cell|egg> Bofh: the wider question is computing a-b where a is known from n, I reduced it to that followed by decently conditioned things
<egg|cell|egg> !Wpn UmbralRaptor
* Qboid gives UmbralRaptor a vector
<UmbralRaptor> !wpn egg|cell|egg
* Qboid gives egg|cell|egg a projective frꙮg
<bofh> egg|cell|egg: the general question basically boils down to "use scaling and double-double precision", I was hoping to be able to suggest something easier than that :P
<egg|cell|egg> Bofh: but double double how exactly
* egg|cell|egg stares back at the frog
<soundnfury> egg|cell|egg: if you gaze too long into the multiocular frog, the frꙮg gazes also into you.
<UmbralRaptor> Ꙫ_ꙫ
<egg|cell|egg> Aaaaaa
<bofh> egg|cell|egg: sec
<bofh> Atlas has a link in one of his Q&A threads iirc
<egg|cell|egg> <3 atlas
* egg|cell|egg thinks котя should learn floating point arithmetic too
<egg|cell|egg> With whitequark's sandwiches clearly
<UmbralRaptor> But according to whitequark, sandwiches don't exist.
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<kmath> https://twitter.com/whitequark/status/684940119099465728 <whitequark> one day I'll open a bar. Offer sandwiches in sizes: single, half, double, and ppc_f128. Call it "FPU Lounge"
<egg|phone|egg> Whitequark: What about extended sandwiches though
<soundnfury> do the sandwiches come in packs of two and ten?
<kmath> https://twitter.com/whitequark/status/877976797694091264 <whitequark> Sandwiches *also* don't exist.
<egg|phone|egg> Yeah I know
<UmbralRaptor> hm
* UmbralRaptor wants a burrito now.
<kmath> <UINT_MIN> @whitequark "Today's special: the NaNwich. It's incomparable! The sandwich with no equal!"
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<soundnfury> go right down to the logic gates, and try eating NORwich
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<BPlayer> Hi!
<BPlayer> Ellied: Ping
<BPlayer> I don't think the MOSFET works as intended
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<BPlayer> If I measure the Off-resistance, should it not be infinite for source to drain, and big but not infinite for drain to source? Because of the diode?
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<APlayer> How come? I just randomly took the center pin of this MOSFET because I am confused now. Then I measured resistance between the center and the left and right respectively and it was both around 16 MOhm
<soundnfury> APlayer: uh, with nothing on the gate the channel should be totally depleted and insulating, in both directions, shouldn't it?
<APlayer> Let's assume the pinout can be any
<APlayer> So I may have hit either one, the gate, source or drain
<APlayer> Is it still possible?
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<soundnfury> APlayer: So, the gate is _always_ insulating, and the channel (Rds) is either insulating or conducting depending on (I think) Vgs
<APlayer> So something is wrong here
<APlayer> Let me look if I screwed up the soldering (shouldn't have...)
<APlayer> Huh
<APlayer> I have no idea
<kmath> <DataSciFact> 'Why can you add co- to variance to get covariance, but you can't add it to median? Because the result would be funny.' - Jonathan Berkowitz
<APlayer> Oh well; I am out of the basement for today
<APlayer> It's getting cold
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<soundnfury> UmbralRaptor: states of catter
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* UmbralRaptor assumes that cats melt at around the same temperature as gallium.
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<Ellied> soundnfury: with nothing on the gate, it could potentially have any amount of charge stuck to it, and it will always behave like a diode from s to d unless it's a four-terminal MOSFET (unlikely)
<BPlayer> WTF? Please tell me this is a troll, LOL https://www.amazon.com/Paladone-PP0562-Cheesus-Christ-Grater/dp/B00913KLVA
<BPlayer> Hi Ellied!
<Ellied> if you pinch all three leads together with your fingers, you've probably made Vgs ~0, so then it should conduct from s to d but not d to s
<Ellied> that is, just touch all three leads, not make them touch each other
<BPlayer> It's all currently soldered onto the prefboard
<BPlayer> I can't make them touch together, I just try to probe it using a multimeter
<BPlayer> Actually thinking of removing all of the parts from the prefboard and start over, will also likely do a cleaner soldering job
<BPlayer> But I am /close/ to making it work, it's really just some weird stuff with this MOSFET
<BPlayer> Also, yeah, S to D only, when off
<soundnfury> Ellied: hunh, okay
* soundnfury defers to the expert
<BPlayer> (Meanwhile, the prefboard looks pretty broken from the sheer amount of soldering and re-soldering I've done
<BPlayer> )
<Ellied> I'm annoyed by the lack of four-terminal MOSFETs available, but I guess they just really aren't practical to make
<Ellied> I mean hell, packages with metal tabs still have those attached to the *drain* of all frustrating things
<Ellied> "lol, you were hoping to attach that fill zone to a power rail, were you? that's cute"
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<egg|anbo|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor an Apollonian COME FROM
<Ellied> "grounded heatsinks? hahahaha"
<egg|anbo|egg> !wpn bofh
* Qboid gives bofh an ellied superpower
* UmbralRaptor wonders what that does.
<BPlayer> Zaps you with a beam of electrons
<egg|anbo|egg> anbocat has won an armchair by superior inertia
<Ellied> gives you inhuman attention span for soldering, but none for actual work
<BPlayer> Ellied: Is there a way to definitely say if the MOSFET is working and determine the pinout if it is using a multimeter and a power supply?
<Ellied> It would be easier with an LED. Got one to hand? (the answer is still yes if not)
<BPlayer> Well, I do have one, but I am not currently handling the parts
<BPlayer> Would note down whatever you say and try it on the weekend or so
<Ellied> okay
<BPlayer> s/one/a whole damn lot of those/
<Qboid> BPlayer meant to say: Well, I do have a whole damn lot of those, but I am not currently handling the parts
<Ellied> so for the P channel, put the source in the positive supply, the gate to the source, and the drain to the LED (and resistor) to ground; the LED should *not* light. Then take the gate and move it to ground; the LED should now light.
<BPlayer> Okay
<BPlayer> (Why is a LED better than a multimeter, though?
<Ellied> I like it cause it's more tangible and is a more realistic load
<BPlayer> Also, I don't currently have safe pinout data
<BPlayer> I can't trust that, because the MOSFETs behaviour just makes no sense (much rather, I am confused, but I still can't make sense of it)
<Ellied> if the LED lights in the first part, switch the ones you think are drain and source. If it doesn't light in either part, switch gate and source. rinse, repeat.
<Ellied> or gate and drain if repeating
<BPlayer> Humm, okay
<BPlayer> Thanks, I'll try (and sure hope I didn't break it)
<BPlayer> (Output was a constant 5 V this time)
<kmath> <stephentyrone> https://t.co/lvr3YOvWgi
<bofh> LOL: "The name perverse sheaf requires explanation: they are not sheaves in the mathematical (or any other) sense, nor are they perverse"
<egg|anbo|egg> bofh: Ꙩ_ꙩ
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<egg|anbo|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a sequence
<egg|anbo|egg> !wpn bofh
* Qboid gives bofh an IEEE 754 Durandal-like fan
* UmbralRaptor separates the CATSUP devs with commas.
<bofh> LOL
<UmbralRaptor> Who spaces entries in a table by bytes?
<bofh> oh did you get a TSV file?
<bofh> (tab-separated-values)