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.
<egg>
bofh: did you know that in french "corps" means "skew field" whereas "field" is "corps commutatif" (but in german "Körper" means "field", and "Schiefkörper" is "skew field")
<egg>
bofh: so, le corps des quaternion, but the skew field of the quaternions oder der Schiefkörper der Quaternionen
<bofh>
egg: ...that is literally the first time I've heard it called a "skew field", somehow all the textbooks and profs I've used referred to those as "division rings"
<egg>
bofh: I don't actually know what to call them in english
<egg>
Schiefkörper in german, corps in french, and that's all I know, my english-speaking lectures were free of such structures :-p
<bofh>
So both are actually valid according to wikipedia, but say Dummit&Foote refers to them as division rings.
<egg>
bofh: apparently there's division algebra
<egg>
so I guess that makes sense
<egg>
(and brings us back to octonionic the hedgehog)
<bofh>
well yes, generally for anything defined over a vector space you can extend that to the same thing defined over an algebra by giving it a suitable vector multiplication op
<bofh>
(and I like how my analysis background means I immediately consider "continuity w.r.t the relevant operations under the underlying topology" as a fundamental axiom :P)
<bofh>
<shrug> people are finding more and more links between discrete and continuous mathematics.
<bofh>
I am reminded of a conversation I had with one of my fav profs from undergrad, recently when I dropped by to visit, where he mentioned a pile of results linking graph theoretic problems along the lines of colourings, embeddings and chromatic number calculation being reducible and convertible to results in optimization/convex geometry
<bofh>
(sadly I still haven't had the time to read those papers in detail)
<bofh>
as for Baez's post, I'm hardly surprised.
<bofh>
sets fundamentally lack sufficient structure to lend themselves to rich theory after a point... you kinda have to add extra axioms.
<bofh>
and that naturally leads you to things like Algebraic Topology, Lie Groups and whatever the fuck Langlands is.
<egg>
:D "whatever the fuck Langlands is"
<egg>
also, "<bofh> sets fundamentally lack sufficient structure" heresy! everything is sets that contain sets that eventually contain the empty set!
<kmath>
<eggleroy> (this joke was co-authored with @whitequark, both authors contributed equally to this work)
<bofh>
jesus fuck I tried registering with PACER and holy fuck how is this so horrible
<Ellied>
well, I'm stabilized now
<egg>
context for that joke for Fiora et al.: in french the word "couple" means both couple and ordered pair, whereas "paire" means (in maths) a set with two elements; one set-theoretic construction of ordered pairs is (x,y) := {{x}, {x,y}}, thus one element is a single-element set (a singleton), and the other a two-element set :D
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<Ellied>
at least it goes away quick when you resume taking the med
<bofh>
this is a guy doing a Catch Me If You Can scam with the US gov't and LARGELY SUCCEEDING
<egg>
"Russell liked your Tweet"
<egg>
why is Bertrand Russel on Twitter
<bofh>
just about the only thing he didn't convince Government Surplus to sell him (acting in the capacity of a ficticious DoE lab) was A FUCKING LEARJET
<egg>
does Russell retweet all tweets by people who do not retweet their own tweets
<bofh>
egg: LOL
<Ellied>
Fiora: to elaborate on what I was saying earlier (I had to leave to get off the bus and return home), I kinda feel like learning to live with my depression and not letting it make me feel terrible all the time (e.g. just not feel so much) is my endgame. I can't conceptualize actually *removing* it from my mind; I don't think that makes sense.
<Ellied>
It sounded to me like you were saying you'd managed to get to that state, but I apologize if I made the wrong assumptions.
<kmath>
<SeamusHughes> There's a guy in Wisconsin running a Catch Me If You Can scam. Posing as a national lab actual getting excess USGovt stuff. It's glorious.
<bofh>
this is majestic, like this *starts off* with him convincing NOAA to *give him* a surplus BOAT.
<bofh>
he got a seismograph from the dept of the interior
<bofh>
$72000 worth of random shit from DoD
<bofh>
a $10mil supercomputer?!
<bofh>
oh god he asked for FOURTEEN LearJets and got denied? I wonder what'd happen if he asked for just one.
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<bofh>
Again, this dude is pretending to be Northridge National Lab, a lab that sounds reminiscent of Oak Ridge National Lab but that uh, DOESN'T EXIST
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<UmbralRaptor>
?
<UmbralRaptor>
(Also, that vaporizer wants to be an F4 or F5 star now)
<Iskierka>
what happens if he gets caught?
<Fiora>
Ellied: yeah, plus or minus
<Fiora>
though it's also a matter of... i've never known anything else?
<Fiora>
so it's like asking someone "how do you live being deaf" and they're like "i dunno, i've always been deaf"
<Ellied>
yeah, that's my thinking. I don't understand what not having depression is like, so I'm not sure I can ever get rid of it. As such, I assume the commonly-used phrase "in remission" for depression must just mean "learning to live with it and not let it drag you down."
<Ellied>
what the hell are DNS SRV records even for anyway
<Ellied>
no web browser actually looks at them, so you apparently can't use them to redirect to another port besides 80
<Ellied>
every time I learn something new about the web, I'm mildly disgusted and a little more horrified
<SnoopJeDi>
battery life is solid on the not-stupid-touchbar ones AFAICT, performance has always been adequate for what I do, peripherals is...a good counterpoint.
<SnoopJeDi>
I didn't say they're perfect machines, mind
<Iskierka>
is it 21-hour-real-use solid?
<SnoopJeDi>
I have never gotten anywhere close to that out of any TP I've owned while using it
<Iskierka>
(26-28 hour left idle but without powersaving/sleep)
<Ellied>
I'm a huge fan of the fact that I could just buy a $10 module and slide it into my 9-year-old toughbook and suddenly have two USB 3.0 ports
<Iskierka>
I left mine unplugged yesterday by accident, came back 24 hours later with 20% remaining :p
<SnoopJeDi>
Truth be told if I could afford the MBP I'd probably just have both
<Iskierka>
that would be fair, the TP hardly costs anything once you have that
<SnoopJeDi>
Iskierka, I turn this machine off something like...twice a month?
<SnoopJeDi>
it snoozes very happily in my bag, which is mostly because I actually use hibernate since SSD makes it not-unbearable
<Iskierka>
with the amount of battery I have I've not bothered to figure out if hibernating is stable in buntu now
<SnoopJeDi>
I can totally get why other people would avoid the brand, but it checks the boxes I care about without trading too much to Big Creepy Apple
<SnoopJeDi>
(which is kind of a moot point since Sunfish proved Lenovo are at least equal on the piece-of-shit meter)
<Iskierka>
true but I'm not sure any manufacturers are really above stuff like that at this point
<Iskierka>
definitely recall sony did similar stuff, though not the details
<Ellied>
Sunfish?
<Iskierka>
so just take the hardware and put your own clean OS on it
<SnoopJeDi>
Ellied, rootkit bloatware
<Ellied>
eek
<SnoopJeDi>
Agree Iskierka, we live in the era of Alexa, after all.
<Iskierka>
also *superfish
<SnoopJeDi>
oops
<SnoopJeDi>
guess I have sailing on the brain
<Ellied>
I'm afraid of laptops on which installing linux is "impossible" (really 'prohibitively difficult')
<SnoopJeDi>
(and also because Poisson Superfish is a sometimes-relevant accelerator code so the Lenovo thing bounces off the pigeonhole principle)
<SnoopJeDi>
I should probably give Lubuntu as my regular-use OS another spin, it's on this machine but I've not booted into it in something like a year
<SnoopJeDi>
Less of a PITA to just do my work-linux-thingies in a Vagrant container
<Ellied>
suddenly being able to flash the storage drive and boot your own OS is a ""security vulnerability"" if you ask some people. I'm afraid of those people.
<Ellied>
like, fucking use encryption and let me tinker in peace, why are we suddenly sacrificing all of our freedom as users for increasingly bullshit "security reasons?"
<Iskierka>
security that they're often not providing
<SnoopJeDi>
I've been saying it a lot recently: computers are hard
<SnoopJeDi>
being stupid on top of that makes it harder, but it's always been hard and probably always will be
* SnoopJeDi
glances at systemd war
<Ellied>
at the very least there should be a hardware jumper in all devices to switch from "protect me from myself" mode to "let me do my own thing and don't bother me" mode
<Ellied>
Also, no voiding warranties for that unless it can be proven that the device was actually damaged beyond the point that can be fixed by a simple reflash
<Iskierka>
hm ... is the solar wind technically supersonic or subsonic, for comparison with the kitchen sink termination shock?
<SnoopJeDi>
bofh's plot \o/
<Ellied>
I understand that it's nice to have a "protect me from myself" mode enabled by default, but a lot of people don't seem to be willing to consider that people will probably actually heed warnings that say "hey, this is dangerous, and if you break it, you're on your own", and just removing that functionality completely is excessive and stupid
<Iskierka>
I suppose being plasma (therefore effectively weird gas), the fact it demonstrates a shock implies incompressible and supersonic?
<Iskierka>
but it seems weird to call something as sparse as solar wind supersonic
<SnoopJeDi>
Ellied, the canonical ansewr is that two is larger than one
<Iskierka>
& incompressible
<Ellied>
Iskierka: I was looking at that in the sink the other day; it looks like that's the point where transverse waves across the water's surface no longer move slower than the water?
<SnoopJeDi>
which is sometimes a bullshit answer and sometimes not
<Iskierka>
hm
<Iskierka>
so how does that analogy with 3D plasma spreading
<Ellied>
SnoopJeDi: you mean to say that it's more work to put in those extra levels of configurability?
<SnoopJeDi>
even if it's not, it's more "feature" surface area
<Iskierka>
"At a distance of more than a few solar radii from the Sun, the solar wind is supersonic and reaches speeds of 250 to 750 kilometers per second.[3] The flow of the solar wind is no longer supersonic at the termination shock." Huh. Already answered on wikipedia
<SnoopJeDi>
I don't mean to proffer that as a justification, but it's a partial explanation
<Iskierka>
so solar wind, despite the low particle density that you could trivially compress by hand given enough of it, is incompressible
<Ellied>
I suppose I might also have some major issues with the whole app-market thing going on with Android (e.g. i"nstead of trusting them, just run them sandboxed!!") that other people might not care about
<Iskierka>
well, if the sandboxing works, that is technically the easiest way to ensure security
<Ellied>
my main problems with it are that 1) people might see it as a last-word catch-all that means they don't have to worry about apps misbehaving anymore, and 2) It also means that YOU must always also operate exclusively in a sandbox on your own device and can never touch the actual OS unless you do something the manufacturers really don't want you to do.
<SnoopJeDi>
Ellied, don't worry Google's RTOS will definitely be a success and solve all their problems with developing literally anything in their entire history
<SnoopJeDi>
They promised!
<Iskierka>
... how are there two dimensions parallel to the magnetic field? Shouldn't it be two perpendicular?
<Iskierka>
unless this means the directions on one axis
<Iskierka>
but in that case you'd expect more than three plots being used
<SnoopJeDi>
tangent plane, maybe?
<Iskierka>
calling the tangent plane parallel would be weird
<Ellied>
SnoopJeDi: ...I'm beginning to feel that I should be looking to buy the longest-lasting laptop I can find within the next few years, because hardware compatible with the way I do computers might be on its way out.
<SnoopJeDi>
I assure you, the sky is not falling
<Ellied>
whenever I think that, I have to remind myself that while I'm about the only person I know IRL that uses computers like I do, there *is* that whole linux community thing out there that isn't going anywhere any time soon
<Ellied>
so yeah the sky is not falling, yet
<SnoopJeDi>
I worry about my Pebble's longevity sometimes
<Iskierka>
I think my tablet may be on the way out in that way
<Iskierka>
started with the home app crashing, recommendations online are clear the cache. Can't, settings crashes looking at applications. Clear whole system's cache, doesn't fix it.
<Ellied>
I'm reading the wikipedia page on this google fuchsia thing
<Iskierka>
problem is slowly expanding and it now occasionally has to reboot itself randomly, and can get into boot loops on its own
<Ellied>
'inspection of the code suggested its capability to run on universal devices, including "dash infotainment systems for cars, to embedded devices like traffic lights and digital watches, all the way up to smartphones, tablets and PCs".' dear GOD no
<Ellied>
we're going to end up in goddamn H+ aren't we
<bofh>
02:49 <@Iskierka> ... how are there two dimensions parallel to the magnetic field? Shouldn't it be two perpendicular?
<SnoopJeDi>
oh, parallel. I....read that wrong.
<bofh>
the magnetometer is RTN
<SnoopJeDi>
my brain is having difficulty in 2017
<bofh>
Radial, Tangential, Normal
<Iskierka>
so how can two of those be parallel to a field described by *lines*?
<bofh>
they aren't. they're 3 perpendicular directions and we're considering two particular angles between axes
<Iskierka>
that didn't seem like what he was describing but I cba to go find it
<bofh>
so it's not 2 dimensions parallel so much as LECP is on a stepper motor and can rotate a full 360deg within the S/C's XY plane
<bofh>
see the circle in the bottom right corner?
<bofh>
R and T are clearly marked on it (the same as the RTN above), and the plots are the averages of the particles in those pie slices
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<bofh>
so the field lines are approximately along T in that region of space, basically.
<Iskierka>
right. wasn't particularly clear at the time but it was well in the AM already
<bofh>
heh.
<bofh>
yeah I think it's quite unclear if you aren't familiar with the reference frame the magnetometer uses, which I wish he explained briefly to not confuse others.
<Iskierka>
... though bigger question, how do you get this aligned data when the spacecraft is spin-stabilised
<bofh>
except it's not spin-stabilized at all.
<Iskierka>
Didn't they have to do that to stop using the RCS?
<SnoopJeDi>
I feel like that message needs an OBJECTION!
<bofh>
as for alignment, simple: sun sensor to determine XY, Z axis is the one from Earth to the S/C
<bofh>
it mostly just doesn't do anything other than every few months reorient its antenna via gyros
<bofh>
but for the most part it just sits there via conservation of angular momentum :p there's not really much in interstellar space to push on it
<Iskierka>
there's the big photon drive sitting on the side that made a measurable difference already
<bofh>
are you referring to the HGA? if so, that's pointed at the earth/sun.
<bofh>
like most of orienting the Voyagers now is simply "is the high-gain antenna pointing directly at earth so we minimize pointing error losses? if yes, good. if no, ASCAL". anything beyond that is nice but not *strictly* necessary.
<Iskierka>
No, the RTG that caused the pioneer anomaly and I thought the same effect on the voyagers
<bofh>
oh. yeah it does have that same effect, but like it's ASCAL'd out every 6 months.
<bofh>
like there's propellant to spare and we haven't turned off the heaters to all the hydrazine lines yet
<Iskierka>
where do I remember something about having to stabilise it and leave it pointed the same way then
<bofh>
prolly thinking of a different S/C then
<Iskierka>
it was one leaving the system and the pioneers were spin stabilised from quite early on, wasn't a decision from them slowly dying
<bofh>
yeah the Pioneers were spin-stabilized, the Voyagers are not
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<egg|work|egg>
eh you can take a train from geneva to zurich
<egg|work|egg>
or failing that, I can :-p
<UmbralRaptor>
!8ball Do trains exist?
<UmbralRaptor>
;8ball Do trains exist?
<kmath>
UmbralRaptor: Signs point to yes
<SnoopJeDi>
prochain arrêt: Genève
<SnoopJeDi>
(I really like the SBB train announcements)
<egg|work|egg>
UmbralRaptor: relatedly, are there any relevant conferences in switzerland before then :-p
<bofh>
LOL half-metal alchemist
<bofh>
egg|work|egg: yeah I know, thanks x86
<bofh>
(yes I know there are hardware FMAs on it. I still have to support non-AVX processors tho)
<UmbralRaptor>
egg: Not that I know of.
<egg|work|egg>
bofh: yeah, like my processor at home is a sandy bridge I think
<UmbralRaptor>
Slight problem in eg: what the first A in AAS stands for.
<egg|work|egg>
bofh: msvc's std::fma is an fma alright, but software fma is slow :-p
<egg|work|egg>
UmbralRaptor: ... should we hold an ANBO general conference
<UmbralRaptor>
bofh: seni-metal alchemist: neutron bombardment of p-block elements?
<UmbralRaptor>
egg|work|egg: hah!
<bofh>
UmbralRaptor: LOL
<bofh>
egg|work|egg: like I don't count s/w fma as "fma", since to me an FMA implies "fast" :P
<egg|work|egg>
bofh: well if it's slow and it's correctly-rounded, that's already useful
<SnoopJeDi>
It's interesting to see the "conferences should be more international" from my perspective, we've been de-facto doing that for 50 years haha
<bofh>
UmbralRaptor: AlcatelAlenia Space
<egg|work|egg>
:D
<Iskierka>
ah, FMA's part of the fancy maths-appropriate bits intel is adding to the CPUs
<bofh>
+?*
* Iskierka
made joke because didn't know
<bofh>
Iskierka: t'was a good joke tho :P
<SnoopJeDi>
I hope I have work worth showing at IPAC in Vancouver next year
<bofh>
SnoopJeDi: nice
<egg|work|egg>
bofh: is there a nice way of computing m/c-b without an FMA?
<bofh>
also I think it's less "should be more international" and more "oh god the USA is on fire/actively hostile don't hold conferences here"
<SnoopJeDi>
I've seen both but definitely more of the latter in the last 8 months heh
<egg|work|egg>
bofh: UmbralRaptor: we should totally have an ANBO conference tho
<SnoopJeDi>
but I think the broader calls have been around for a few years
<Iskierka>
Just now the americans are so scared of their own country they're going "yes let's do that."
<bofh>
egg|work|egg: like it'll boil down to using double-double arithmetic to get extra precision on the subtraction which *in this case* is the same thing you're achieving via s/w FMA
<bofh>
egg|work|egg: agreed
<SnoopJeDi>
the brain drain wasn't bad enough I guess, gotta double down
<SnoopJeDi>
the primary cURL dev got denied entry >:|
<bofh>
yeah, I, what
<bofh>
like he's from Sweden and not, like, a racial minority or anything, so that's even more surprising. also the moment at which TSA/CBP racial profiling is so bad that a case not according to it elicits surprise... is depressing as shit.
<SnoopJeDi>
I think it's a moral imperative for academics to spread that WaPo "would you qualify to immigrate" quiz
<egg|work|egg>
bofh: hm, how do you compute m/n^2-b
<SnoopJeDi>
because the vast majority of US academics I know would not qualify
<bofh>
dangit that's n^2 and not 2^n, I was about to say "ldexp, duh"
<SnoopJeDi>
(although probably would barely scrape by once they have PhD in hand)
<bofh>
SnoopJeDi: yeah iirc I fail currently and would just barely make 30 points once done?
<bofh>
also do you have that link handy?
* UmbralRaptor
currently fails, will pass for a while post-PhD.
<bofh>
egg|work|egg: so a lot of it depends on the relative sizes of m/c and b
<bofh>
egg|work|egg: you may need to scale by an exponent power of two
<egg|work|egg>
bofh: I'm not looking at over/underflow
<UmbralRaptor>
Also, there's an edge case where you can win a Nobel and be denied.
<UmbralRaptor>
(corner case?)
<egg|work|egg>
bofh: I'm looking at the subtraction :-p
<egg|work|egg>
m/c-b can be evaluated as [[m-bc]/c]
<egg|work|egg>
but what about m/n^2-b
<bofh>
c=n*n, done?
<bofh>
like nothing really changes unless n > ~DBL_MAX/2
<egg|work|egg>
bofh: uuuuh
<egg|work|egg>
bofh: n*n isn't exact
<egg|work|egg>
well [n*n]
<egg|work|egg>
so if bc ~ m, your thing will return the rounding error
<bofh>
yes, but is the precision loss relevant?
<bofh>
yeah, but to me that strikes me as a rare case :P
<egg|work|egg>
well the precision loss is up to all the bits probably
<egg|work|egg>
bofh: so that's near the circular case
<egg|work|egg>
m/n^2 = a
<bofh>
oh, right, *that* expression.
<egg|work|egg>
:D
<bofh>
still working on conics I see :P
<egg|work|egg>
bofh: well I'm pretty sure I can spend a few months with all the code paths :D
<bofh>
uhh... in that case, if necessary, compute the product of the mantissas of n*n, possibly in double-double precision if necessary, do the divide by the mantissa product via whichever expression is better, then scale by exponent? possibly do the subtract first, scaling b in the opposite direction
<SnoopJeDi>
I finished The Rithmatist last weekend, was pleasantly surprised to see some discussion of conic sections in a YA novel
<bofh>
like that's the naive way I can think of, there's prolly something simpler.
<bofh>
SnoopJeDi: well it's a Brandon Sanderson novel, ofc it's going to be excellent.
<SnoopJeDi>
It's my first actually, unless you count bouncing hard as a child off a randomly acquired Wheel of Time novel somewhere in the middle of the series
<SnoopJeDi>
But if his other stuff is that good at "show don't tell" I think it might be an actual in-road to fantasy for me (which is generally very difficult)
<egg|work|egg>
bofh: like I don't care much about over/underflows, that would occur for stupidly-sized orbits
<egg|work|egg>
bofh: I shouldn't break just because an orbit is near-circular though
<bofh>
egg|work|egg: yeah, hence possibly needing more precision.
<bofh>
egg|work|egg: s/w FMA feels like it suffices, just break it apart into hi and lo bits and yeah
<egg|work|egg>
right but no need for scaling
<bofh>
yep.
<bofh>
you can just skip that outright then yeah
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<SnoopJeDi>
"unlike most mathematical advances, which might find a practical use after decades..." Quanta Magazine bringing the ??
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<bofh>
SnoopJeDi: rofl
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<kmath>
<christineliuart> Make friends with non-academics, with people who don't look like you, who are from different places. Make friends who open your mind.
<egg|zzz|egg>
UmbralRaptor: I'm technically not an academic!
<egg|zzz|egg>
UmbralRaptor: same for Fiora, whitequark, et al.
<UmbralRaptor>
I think whitequark counts as an actual mad scientist. >_>
<SnoopJeDi>
email: "Please bright this article to class Monday and read it carefully over the weekend."
<SnoopJeDi>
no attachment
<SnoopJeDi>
Good omen for this technical writing course ?
<UmbralRaptor>
It'll be a word doc with an embedded jpeg or 3 of the text.
<SnoopJeDi>
UmbralRaptor, I would say #kspacademia doesn't quite qualify to OP's solicitation, most metrics put us pretty close to the same bin
<SnoopJeDi>
I cherish our non-physicist attendees to Liquid Physics for exactly this reason though >_>
<egg|zzz|egg>
UmbralRaptor: SnoopJeDi: we're most certainly from different places
<UmbralRaptor>
As for people not like me in outlook, there's more than enough in #spacexfun >_>
<SnoopJeDi>
egg|zzz|egg, true enough, but I still consider this very familiar territory (if usually rather above my skillset)
egg|zzz|egg is now known as egg|nomz|egg
<bofh>
17:48 <@UmbralRaptor> It'll be a word doc with an embedded jpeg or 3 of the text.
<bofh>
I once got a 1-page PDF consisting of a single embedded jpeg that was a paragraph of plan ASCII text in Arial sent to our department mailing list.
<bofh>
(usually it's a PDF but the text in the pdf is text, not a JPEG of text)
<SnoopJeDi>
we get an awful lot of talk announcements that way
<SnoopJeDi>
because I guess we want talk announcements to be literal torture
<SnoopJeDi>
(I shouldn't misuse literal that way)
<UmbralRaptor>
Depends on if the talk is about finding WMDs?
<SnoopJeDi>
ooph
<SnoopJeDi>
we *have* had talks about nerve agent attacks before
<SnoopJeDi>
one of the local laser pew-pew fellas is big on promoting backlasing as a means of remote detection of Bad Gaseous Thingstm
<UmbralRaptor>
.mp4 and .flv would presumably go off the screen to the left.
<icefire>
I would put pdf far into the negatives there
<icefire>
along with all the office formats
<e_14159>
Me too.
<icefire>
malware vectors like no tomorrow
<e_14159>
Well, yes, they might have malware - but the information they convey is correct.
<SnoopJeDi>
PDF tables are so good though /s
<SnoopJeDi>
particularly if they're landscape
<egg|nomz|egg>
!wpn bofh
* Qboid
gives bofh a caffeinated transformer
<egg|nomz|egg>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor a backward frꙮg
<egg|nomz|egg>
!wpn e_14159
* Qboid
gives e_14159 a supersaturated nib-like measure
<e_14159>
Thank you.
* UmbralRaptor
stares at egg|nomz|egg with the frog.
<SnoopJeDi>
!wpn -add:wpn PDF
<Qboid>
SnoopJeDi: Weapon added!
<Iskierka>
!wpn -add:adj PowerPoint
<Qboid>
Iskierka: Adjective added!
<Iskierka>
!wpn -add:wpn Turing Machine
<Qboid>
Iskierka: Weapon added!
<bofh>
ohh, my fav form of transformer
<SnoopJeDi>
!wpn -add:adj Turing-complete
<Qboid>
SnoopJeDi: Adjective added!
<SnoopJeDi>
bofh, my girlfriend made me this for my birthday...but didn't pack it well for shipping and it cracked ? http://i.imgur.com/mqAPIZT.jpg
egg|nomz|egg is now known as egg
<bofh>
SnoopJeDi: that is amazing
<SnoopJeDi>
I was incredibly surprised and touched because I'd only mentioned how much I love those remarks in passing right when we started dating
<SnoopJeDi>
(I can't read it aloud without getting a bit choked up)
<bofh>
d'aww :) that is actually incredibly cute
<bofh>
(tbh same, esp. of late)
<SnoopJeDi>
I can only imagine how it impacts you with all your accumulated knowledge of the human work that went into it!
<bofh>
every now and then I am reminded of the fact that we brought back all our good images of Neptune using a pair of 70s Vidicons & basically a computer slower than a Commodore 64
<SnoopJeDi>
heh, I was just in another channel sharing that "Tales from the Lunar Guidance Computer" write-up
<SnoopJeDi>
re: we don't know how good we've got it with modern computing
<SnoopJeDi>
kicked off by a discussion of why loop unrolling maybe isn't actually as crazy as it looks *sometimes*
<bofh>
oh, we compressed those images using one of those computers (the spare FDS) using an image compression routine that was written in 1985 & programmed into V2 shortly before it got to Uranus. into a machine with 3968 16-bit words of memory.
<SnoopJeDi>
even the word "word" blows my mind
<bofh>
(it's basically an RLE scheme with some quirks related to the format output by the ISS System)
<bofh>
hey the CCS/AACS are 18-bit word machines
<bofh>
it's only the FDS that's 16-bit
<bofh>
man I should fimd that LECP doc tht has full wiring diagrams for the detectors, they're pretty great
<SnoopJeDi>
I know exactly nothing about any of these things and it's wonderful
<SnoopJeDi>
SO MUCH LEFT TO LEARN
<bofh>
I particularly like how at one point it requires rad-hardened LM741s
<SnoopJeDi>
hahah
<bofh>
like, literally the world's crappiest generic starter op-amp
<bofh>
tho personally one of my fav things are the 4x yearly wideband PWS playbacks from Voyager 1
<bofh>
b/c there's something truly amazing about getting 1.4kb/sec (actually 2.8kb/sec k=7 r=2 Viterbi coded) from 19.5 light-hours away
<bofh>
fuck that's better than Comcast sometimes.
<bofh>
(latency's horrible tho :P)
<SnoopJeDi>
hehe
<bofh>
like man, light is *slow*.
<SnoopJeDi>
it's the law!
* egg
spookily acts on bofh
<bofh>
hey!
<SnoopJeDi>
I remember thinking about the round-trip delay to Spirit/Opportunity being a real lightbulb moment for me as a kid
<SnoopJeDi>
Bit jealous not to have been steeped in the days of Mariner, Voyager, et al., but I have an embarassment of riches to my own so...
<SnoopJeDi>
"Oh yea, well my generation declared war on the Moon and Mars!"
<bofh>
thankfully that's still a joke, I hope
<SnoopJeDi>
Fair point, what-with space muhreens
<SnoopJeDi>
I just really like the mental image of the lunar impactor and MSL Curiosity's ChemCam laser being weapons in our tireless anthropomorphic war on planetary geology
<bofh>
rofl
<bofh>
pew pew pew
<bofh>
(in that case what is Osiris-REx? :P)
<SnoopJeDi>
exploitation colonialism?
<bofh>
rofl
<SnoopJeDi>
"Your culture will adapt to serve us."
<egg>
(well this thing doesn't try to do signed 0s, this is rather tricky to implement on top of something that doesn't have them, I might revisit that)