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.
<kmath>
<whitequark> "… I have no idea whether the guy is called Chebyshev, Tchebyshoff, Tschebyscheff or whatever" -- @eggleroy https://t.co/BzvVv8otZP
<bofh>
In other news, Tropical Storm Philippe, y'all.
<bofh>
I'd ask how much to bet on it strengthening to hurricane-grade at some point, but I don't really take sucker bets.
<bofh>
Especially since the waters in its path are some of the hottest in the Atlantic and the NHC forecast calls for 55kt peak winds and they've consistently underestimated this season, so I could *easily* see it hitting 65kts.
<egg>
bofh: what have you done to ??? again
<bofh>
!u
<Qboid>
What code point do you want me to look up?
<bofh>
egg: ?
<egg>
!u ???
<Qboid>
U+1202D CUNEIFORM SIGN AN (?)
<Qboid>
U+12055 CUNEIFORM SIGN DA (?)
<Qboid>
U+120F6 CUNEIFORM SIGN GAN (?)
TheKosmonaut is now known as KosmonautThe
<Ellied>
where did all these twitter followers come from θ.Θ
<bofh>
egg: ahh. somehow my terminal ate them but in your !u it didn't.
<bofh>
egg: also no idea, he seems displeased :(
<bofh>
Ellied: you got RTed by whitequark :P
<Ellied>
ahh, of course.
<Ellied>
I think this is my greatest dFollowers/dt to date and it's just a tweet about playing with an IGBT and a neon tube that brought it on? wow
<Ellied>
I mean at least it wasn't a dreadful shitpost like most of my attention-gain anomalies come from
<whitequark>
Ellied: how many did you gain
<Ellied>
like 12
<Ellied>
I'm not a Popular Online Figure, this is a lot for me
<whitequark>
oh
<whitequark>
my average is 4 per day
<whitequark>
and only 11% female :(
<whitequark>
well, somewhat more because of twitter's shitty analytics
<Ellied>
damn, 11%? that's terrible
* UmbralRaptor
blows away 3 probable bots.
<whitequark>
Ellied: check for yourself on analytics.twitter.com
<whitequark>
you probably fare as badly
<Fiora>
the analytics are terribly inaccurate
* UmbralRaptor
should probably stop that so that I stop getting "too few followers for analytics" type messages.
<Fiora>
like, they believe i am male
<Fiora>
because i tweet tech
<Ellied>
I deleted my gender entry from my twitter data, i imagine I'm not the only one
<Fiora>
people who tweet tech are likely male. therefore, our statistics show most people who tweet tech are male. therefore, people who tweet tech are--
<Ellied>
same, mine said "male" so I just took it out
<Fiora>
etc
<Fiora>
i've known people who had few enough followers (and knew them all) that they could count
<Fiora>
and it was off by a factor of 4 or more
<bofh>
My gender is the string "There Is Not.", which prolly means it defaults to Male as a result. :/
<whitequark>
uhm
<bofh>
Goddamn, that's astonishingly bad.
<whitequark>
twitter has a gender field?
<Fiora>
whitequark: at some point you could do analytics on yourself by starting another account and following it
<Ellied>
yeah you can edit it in the "your twitter data" or whatever section
<Fiora>
and looking at its stats
<Fiora>
it revealed how bad their analytics were
<Fiora>
so they disabled the ability to look at your followers' stats unless you had enough to obscure their badness
<SnoopJeDi>
20:10 <@Fiora> because i tweet tech
<bofh>
whitequark: Settins and Privacy -> Your Twitter Data.
<SnoopJeDi>
goddammit twitter
<Fiora>
their analytics are *uselessly* bad
<bofh>
Fiora: oh man you know what's great? the Twitter "here are what we think your interests are" page.
<whitequark>
huh twitter decided i'm female
<Fiora>
bofh: omg
<Fiora>
that one is amazing
<Fiora>
it's even worse than klout
<SnoopJeDi>
LOL
<bofh>
Fiora: it's astoundingly bad. I once got "Men's Pants
<bofh>
+"*
<bofh>
TWICE
<bofh>
as in two different spots
<bofh>
Currently I have 3 checkboxes for "Weather", which I suppose isn't inaccurate but wtf does that even mean.
<whitequark>
bofh: it suggests "Aftermarket auto buyer types" for me
<SnoopJeDi>
it means there are only three types of weather bofh
<whitequark>
also it says 55% of my audience are eggs
<Fiora>
bofh: also it shouldn't be surprising how bad it is, because if it pathologically fails oncertain types of people, and those are the people who follow you
<Ellied>
most internet we encountered in China was not at all fast, presumably because packets all have to go through the security line on the way in and out, so even our very fast paid VPN was not an option all the time.
* egg
stares at his analytics
<bofh>
(also I lied, only 2x Weather)
<egg>
apparently my top tweet is "@bofh453 ??????"
<bofh>
Ellied: so like most websites past GFW this summer were like, 5-6kb/sec peak transfer speed. 12-18kb/sec if you were *lucky*.
<egg>
wait no that's my top mention from last month
* UmbralRaptor
's interests are impressively generic sci/tech/us stuff
<bofh>
Ellied: also for reasons that I can't seem to figure out, *.jpl.nasa.gov is blocked.
<Ellied>
bofh: where are you again?
<UmbralRaptor>
Although for some reason it includes "Dads"
<FluffyFoxeh>
I requested my advertiser list and I got an email with no attatchment
<egg>
"my organic audience", 11% female
<bofh>
Ellied: I'm in Urbana-Champaign but this was late May/June/early July when I was in Shanghai.
<Ellied>
ahh
<SnoopJeDi>
organic females, product of Ferenginar
<FluffyFoxeh>
inorganic is another word for robots
<FluffyFoxeh>
:)
* UmbralRaptor
's organic audience does not have a gender listing.
<FluffyFoxeh>
I don't see the audience thing anywhere
<egg>
whitequark: it doesn't tell me that my organic audience is eggs though (and it doesn't tell me anything about my followers)
<FluffyFoxeh>
I don't really use twitter though so maybe I don't have an "audience"
<egg>
whitequark: tbh I am eggs
<Ellied>
looks like my top tweet is one of the ones about the divinity of integrated circuits, presumably because Micah Scott retweeted it
<FluffyFoxeh>
is the advertiser list thing broken for anyone else because I get an email saying there's something attachd but there is nothing attached
<UmbralRaptor>
FluffyFoxeh: analytics.twitter.com
<bofh>
apparently 19% of my twitter audience is female
<FluffyFoxeh>
mine is 17% :p
<UmbralRaptor>
FluffyFoxeh: I recall it working when I first tried, but the attachment was weird and didn't download for all my email clients.
<FluffyFoxeh>
dunno where it even gets that because I hardly tweet
<Ellied>
god, is there a way to get, like, *to* the tweets specified on the analytics page? nothing about them is clickable
<bofh>
https://twitter.com/bofh453/status/881556069738319872 my top tweet is this one, which I really feel bad about since the joke's actually by @alt_kia on her priv account (I did ask and get permission, but it still annoys me that her main was deactivated then so I didn't properly credit :/).
<kmath>
<FioraAeterna> "I, the reader of this tweet, am..." [poll]
<Fiora>
this is terrifying
<Iskierka>
but catgirls are good
KosmonautThe is now known as TheKosmonaut
<bofh>
Fiora: why is that terrifying? catgirls are quite okay.
<UmbralRaptor>
^
<Fiora>
i mean yes but also
<Fiora>
screw the twitter analytics. *that's* a gender poll :P
<Fiora>
*over half my boy followers [who were active and answered the poll] would rather be catgirls*
<bofh>
seems reasonable. :P
<Ellied>
huh. Mouser's highest-voltage MOSFET has a higher voltage rating than its highest-voltage IGBT. I thought IGBTs were supposed to be better at holding up very high voltages?
<Ellied>
the MOSFET's a lot cheaper too, a little over half the price of the IGBT
<bofh>
Not surprised, power MOSFETs are inexplicably dirt-cheap nowadays.
<Ellied>
waiiit a minute, I think I see it. This particular MOSFET has a weirdly extremely high resistance?
<Ellied>
like, close to 70 ohms at Vgs = 10V
<egg>
Fiora: but what about those of us who are literally eggs
<egg>
(I mean I might be a cat egg but I don't think cats are monotremes)
<Ellied>
it also has a test case higher up the datasheet which seems to disagree with the graphs down below, which is odd. It says Vgs = 10V, Vds = 1kV, Id = 0.5A (??) but then has a plot of Vds vs Id that shows 1A at 70V ds and 10V gs
<Ellied>
I don't think I understand what I'm reading
<bofh>
egg: the semicolon/Greek question mark is my fav, Weierstrass P a close second.
<Ellied>
0.5A at 1kV ds seems like it would be brutal on the device, no?
<Ellied>
I have to wonder if they misprinted the datasheet and the bottom axis of this graph is supposed to be in increments of 1V and not 10V. 1 amp at ~7V ds seems a *little* more reasonable, if still pretty poor for a MOSFET.
<bofh>
500mA at a kV is like, the sort of thing I'd use a Thyratron or heck, even a Krytron for.
<Ellied>
what point would there be in making the switching device dissipate that much power, though?
<Ellied>
I can see needing to hold up 1kV when off and then conduct at a low voltage and lowish current when on, but using it as the limiting factor like that seems weird as hell
<bofh>
bloody good question, honestly. I haven't the foggiest.
<bofh>
Maybe they mean it can conduct up to 500mA @ 1kV & are referring to that as "V_{DS}" inexplicably?
<Ellied>
must be
<Ellied>
I guess 70 ohms Rds(on) isn't unreasonable, but I feel like I see that more in the realm of cheap small-signal FETs, not giant ones that are supposed to be able to manage high currents
<Ellied>
I guess it's only rated to 0.9A, huh
<Ellied>
or 3A transient
<Ellied>
there's where the IGBT justifies its price again, 90A cool, 40A hot, 400A transient
<bofh>
jfc that's *absurd*
<Ellied>
dang, there's one down in the 2500V regime that's even worse, only 200 mA continuous, 600 transient. that seems... really low
<Ellied>
450Ω Rds(on)
icefire has quit [Read error: Connection reset by peer]
<Ellied>
the 50N60T IGBT I mentioned on twitter has similar current capabilities to that HV one (90A cool) IIRC. Only 600V though, not 4000.
<Ellied>
(and a twentieth of the cost)
<Ellied>
anyway I can't even really think of where MOSFETs with this much resistance are even useful, TBH. Maybe neon lighting where you need high voltage but hardly any current?
<Ellied>
I didn't get the impression before that increasing a MOSFET's voltage capability impacted current capability that much
<bofh>
Yeah I'm... not sure, I didn't think so either but my familiarity w/HV MOSFETs is very limited.
<bofh>
Tho for target, yeah, neon lighting would def. be one of them given how tiny the currents you need there are.
<kmath>
<argonne> Happy #NationalCatDay! Stay with us all day to see the fabulous felines that call our Argonne staff family. https://t.co/S28vbSF5Jf
<bofh>
egg: anyhow twitter decided I also speak: German, Welsh, French, Portugese, Icelandic, Greek, Turkish, Hungarian, Finnish, Estonian, Polish, Czech, Basque, Norwegian, Chinese, Romanian, Ukrainian, Dutch, Swedish, Italian, Japanese and Spanish.
<bofh>
amsuingly enough, *not* Russian, which while technically true (I can barely speak it at this point) would be the closest thing to correct there.
<APlayer>
Russian? When did you learn that?
<bofh>
...as a child?
<egg>
!wpn bofh
* Qboid
gives bofh an alternator with an arrow attachment
<egg>
!wpn APlayer
* Qboid
gives APlayer a phased pink crystal
<egg>
bofh: I thought you spoke a bit of french?
<bofh>
egg: okay, true.
<egg>
bofh: but that's an impressive list of languages certainly
<bofh>
thanks, Canadian education
<egg>
bofh: I should put "learn all YouTube site languages" as a goal for the performance self-assessment thingy next semester :-p
<APlayer>
!wpn egg
* Qboid
gives egg a magic printer
<bofh>
(I lucked out and somehow mostly got taught Paris-dialect instead of Québecois, too!)
<egg>
bofh: oh nice, so I might actually understand it :-p
<APlayer>
"a magic printer"
* APlayer
is jealous
<egg>
bofh: ow, there's no separate ISO language code for Québécois :-p
<bofh>
wait *really*? wyf
<bofh>
wtf*
<egg>
bofh: well it's quite reasonable to say it's a dialect of french I guess
<bofh>
True.
<egg>
bofh: otoh nrf is a thing so,
<bofh>
nrf?
<egg>
Nouormand
<bofh>
is that its own thing?
<egg>
or Normaund, or whatever, there's no real standard spelling of norman
<egg>
bofh: sure, they conquered a bunch of things, why wouldn't it be its own language :-p
<bofh>
touché
<bofh>
I'm honestly most puzzled where the heck it got Basque from.
<egg>
?
<egg>
ah, twitter
<egg>
dunno, it might take its shitty langdet combined with you not clicking to translate as a signal?
<egg>
like, if I had a good langdet I would consider using that (at least on text-only tweets)
<egg>
and their langdet is famously terrible
<egg>
[translate from norman]
<egg>
!wpn bofh
* Qboid
gives bofh a theta rake
<bofh>
egg: their langdet is legendarily bad
<bofh>
egg: I love reading what it tries to think @CondensedPapers tweets in
<bofh>
like "Romanian if many latin terms, otherwise Haitian Creole" seems to be an okay zeroth-order approximation.
<kmath>
<BackyrdAstroGuy> Woke up this morning, looked at ceiling & saw @NASAJuno approaching #Jupiter ? If you love #space, it’s everywhere!… https://t.co/km4TONIWhY
<bofh>
egg: I mean I eat dinner around ~21:30 in part due to the fact that I'm up absurdly late.
<egg>
bofh: yeah but that's still early compared to waking up at 12
<bofh>
true.
<SnoopJeDi>
I kinda enjoy late-night cooking, something feels cozier about it
<bofh>
Agreed.
<SnoopJeDi>
I do hope my neighbors don't get too much noise out of it but no complaints so I guess it can't be that bad
<kmath>
<AngryAstroPanda> Follow-up to my recent tweet about the composition of humans, courtesy of @AstroPapera! #stardust #science #scicomm https://t.co/Q86giWiCI5
<bofh>
FluffyFoxeh: that seems strictly like a thousand times more annoying
<kmath>
<lesliemeans> I bought @jonnysun 's book in July but hadn't read it yet because I didn't want it to be over. Also @Lin_Manuel 's… https://t.co/mtlrqsGN50
<kmath>
<yonatanzunger> Good numbers to remember. Also, a branch mispredict is 20-30 cycles. In an inner loop, main memory may as well be i… https://t.co/snITNLPobv
<egg>
what if main memory is ferrite core and is in space
<bofh>
egg: oh gods now you need to take round-trip-light-time into account.
<bofh>
/win 20
<egg>
it's a long way / to main memory / it's a long way / to go...
* soundnfury
gives UmbralRaptor a dysfunctional functional
<Qboid>
1d 0h 0m 0s left to event #12: 무궁화 5A호/Falcon 9 v1.2 [at 2017-10-30 19:34:00]. Say '!kountdown 12' for details
<APlayer>
AM I right to assume that a perfect cylinder generates maximum lift when oriented at 45 deg relative to an airflow?
<APlayer>
(@ferram)
<egg>
could also ask iskie maybe
<APlayer>
(@Iskierka, in that case)
<APlayer>
Also, "Iskie"? That's something I hear for the first time :P
<egg>
I think I picked that up from Ellied?
<egg>
(whom I occasionally call Greening for maximal confusion)
<APlayer>
I've never heard him use that either
<Ellied>
I picked it up from Pinkbeast
<Ellied>
also I'm a her
<APlayer>
Also, I don't even know who Pinkbeast is
<APlayer>
And, /me slaps himself for assuming gender once again
<Ellied>
!seen Pinkbeast
<Ellied>
no?
<Qboid>
Ellied: I last saw Pinkbeast on [24.10.2017 20:19:58] in #kspunofficial saying: "Whoops. The tales of ripping adventure are much less vexing because they depict people whose social consensus makes them rational horrible agents of colonialism, where the mundane Victorian melodrama depicts people whose social consensus makes them fucking idiots"
<bofh>
apparently squid are attracted to ~515nm light.
<Ellied>
but they look slightly different from θ and Θ (Terminus has characters for these; the monocular Os are pulled from a different font and are antialiased) so I wasn't sure what block egg was pulling from
<SnoopJeDi>
oh my god that's awesome
<bofh>
Ellied: Extended Cyrillic A, iirc.
<bofh>
s/\ A/\ B/
<Qboid>
bofh meant to say: Ellied: Extended Cyrillic\ B, iirc.
<bofh>
thanks, Qboid. Thuboid.
<egg>
Thomas: we need !u to also cover unicode properties :-p
<SnoopJeDi>
so wait, is that attracting the plankton because photosynthesis and the squid by proxy, or do the squid react directly to 515 nm?
<egg>
!u -kIRG_KPSource
<bofh>
I don't think it's anything special about ~515nm specifically, just that's what you can get cheap powerful green LEDs in.
<SnoopJeDi>
(on second thought I guess it's hard to distinguish between these two if it's an instinctive hunting strategy?)
<SnoopJeDi>
oh I just meant green in general
<SnoopJeDi>
i.e. are they following the plankton or the light
<bofh>
but yeah re: being attracted to the light, I'm not sure.
<Ellied>
Ꙩ is especially irritating in my font situation because it is apparently drawn from a non-monospace font and doesn't respect the fixed width
<bofh>
now I need to check some papers.
<SnoopJeDi>
super neato that you can see it from ISS that much o.O
<bofh>
since I could see either happening b/c again, instinctive hunting strategies.
<SnoopJeDi>
reminds me of some reading I did for a talk on cuttlefish camouflage...right as I prepared a talk on a theory paper about the effect of biologically tunable iridophores + chromatophores, someone published an in situ spectrometer SCUBA measurement of cuttlefish and their surroundings!
<SnoopJeDi>
the Aegean sea data happily fit inside the theoretical boundary for the author's fairly arbitrary parameters, but it also included some discussion of the vision model of their prey (2 vs 3 color receptors IIRC)
<kmath>
<BabelStone> @FakeUnicode @Random_Guy_32 @Evertype @jenny8lee @jeremyburge @mark_e_davis And ISO national body comments also ign… https://t.co/sKpAm3Sc69
<kmath>
<tony873004> It didn't come from Vega. At 26 km/s, it would have taken #A2017U1 nearly 300,000 years to travel from Vega to the… https://t.co/jpS35rGUVj
ferram4_ is now known as ferram4
<egg>
!wpn ferram4
* Qboid
gives ferram4 a minimum power supply which vaguely resembles an oni
<ferram4>
Sounds like anything else I'd expect out of Japan.
<kmath>
<mcnees> Yes, as pointed out by many of you that means the first three characters successfully transmitted from host to host on ARPANET were “LOL.”
<egg>
!acr -add:ARPANET Advanced Research Projects Agency NETwork
<Qboid>
egg: I added the explanation for this acronym.
<egg>
bofh: "jesus arc-welding christ"? Ꙩ_ꙩ
* UmbralRaptor
hides the megavolt arcwelder.
<UmbralRaptor>
(it's not so much a melt zone as a positron production zone)
<egg>
bofh: ιντη;
<bofh>
egg: "INTÉ"?
<bofh>
also yes, in my headcanon Jesus knows how to arc-weld.
<bofh>
I mean he *was* a carpenter back in the day? It's only sensible that in today's world he's also a tradesperson :P