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.
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<SnoopJeDi>
so, uh, I sent that weight simulator thing I made to the PI of the paper that inspired me, and she wants to know if I can come give a talk at West Point o.O
<UmbralRaptor>
Grats, I think.
<SnoopJeDi>
Trying to think of how I can tactfully say "thanks, I'm a grad student in an unrelated field with limited money so if you really want a non-expert to give a talk you mind footing the bill?"
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<SnoopJeDi>
Not much going on in here at the moment, but...nerds. ?
<UmbralRaptor>
There is quite a bit of silliness in here. Also a Principia dev.
<SnoopJeDi>
And Kozai \o/
<UmbralRaptor>
>_>
* UmbralRaptor
has a legit reason to not be working on the kozai mechanism at the moment.
<FluffyFoxeh>
nerds are cool ^^
<SnoopJeDi>
I honestly don't really know what all the Kozai is all about other than that it's become a kspacademia meme.
<SnoopJeDi>
Is it more related to your work or to principia, UmbralRaptor?
<SnoopJeDi>
been a while since I've bugged you about what you're crunching away on
<UmbralRaptor>
SnoopJeDi: More principia, via Batygin and Brown (2016)
<SnoopJeDi>
oh wow that recently
<UmbralRaptor>
The Kozai mechanism is a way small objects get perturbed (Kozai himself looked at comets being pushed by Jupiter back in the 60s?). Batygin and Brown argued that Planet 9 was doing it to various KBOs.
<UmbralRaptor>
Uh, the perturbed object trades off eccentricity for inclination (or vice-versa)
<SnoopJeDi>
OH, Brown is @plutokiller?
<SnoopJeDi>
Cool!
<UmbralRaptor>
Yeah, he is.
<UmbralRaptor>
So the idea came up that we could test it in KSP.
<SnoopJeDi>
I never really dug into the details on that last year
<UmbralRaptor>
But, uh, schoolwork happened, and currently my 64bit linux box is down.
<SnoopJeDi>
work, uh, finds a way
<UmbralRaptor>
Heh.
* UmbralRaptor
is IRCing from a much less powerful computer. All hail the Core1Duo U2500!
<UmbralRaptor>
But, uh, I might be able to attempt things on my work computer once the Principia can be built (again) on Macs.
<Ellied>
I see your C2D U2500 and raise you a T7250
<Ellied>
er, C1D
<Ellied>
mine is a C2D
<Ellied>
one of the old old laptops I didn't yet pull out of the closet has a Pentium III
<UmbralRaptor>
Eek
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Thomas|AWAY is now known as Thomas
<bofh>
UmbralRaptor: ClF3 in a RuF6 container + like, a tripwire and a propane torch?
<bofh>
(RuF6 melts at like 54degC, and ClF3 does not react with high oxidation state metal fluorides. One of the very few things it *doesn't* react with).
<egg|work|egg>
bofh: didn't know about RuF6; but you'll have a hard time finding someone on this channel that doesn't know about ClF3, what with *ksp* academia (we like rockety things)
* xShadowx
doesn't know about ClF3
<bofh>
egg|work|egg: so uh
<bofh>
context was 22:57:28 <@UmbralRaptor> Is it possible to make ClF3 traps? <_<
<bofh>
and the above is a *probably* likely to work ClF3 trap.
<bofh>
okay, very likely, since water oxidation is unlikely to affect structural integrity much given RuF6 is a weak fluorinating agent for H2O compared to RuF5
<Ellied>
is there a gaseous, heavier-than-air chemical that won't react with ClF3? You could put it in a shallow pool made of RuF6 with the gas over top, and someone stepping in the pool (or just disturbing the gas enough) would be toast.
<bofh>
so my first thought was UF6, lol.
<Ellied>
um, that would probably do the trick
<bofh>
Tungsten Hexafluoride would actually be even better.
<Ellied>
perfect.
<UmbralRaptor>
\o/
<bofh>
Especially since the standard synthesis for it is "react W with F2 at 400degC" and a variant one is "react W with ClF3 at similar temperatures"
<Ellied>
so like, periodically toss a red-hot bead of tungsten into the pool to replenish the gas
<Ellied>
probably wouldn't work because it would come out too hot and blow away the gas layer
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<Ellied>
you might have to make the pit impractically deep for the WF6 to adequately protect the ClF3 from the air
<Ellied>
I mean it's still a better pit trap than just spikes at the bottom I guess
<bofh>
"Unlike some other metal fluorides, WF6 is not a useful fluorinating agent nor is it a powerful oxidant." ooh perfect
<bofh>
like the biggest issue is it condenses at 17.1degC so you'd need to do this in, like, a rainforest.
<SnoopJeDi>
UmbralRaptor, this looks like a really good read, thanks for sharing
<UmbralRaptor>
SnoopJeDi: Blarg, no mention of an optical counterpart (in the abstract)
<UmbralRaptor>
SnoopJeDi: Er, wait. Sharing which thing?
<SnoopJeDi>
The parametric resonance deal
<UmbralRaptor>
Ah.
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<egg|work|egg>
!wpn bofh
* Qboid
gives bofh a cone
<egg|work|egg>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor a Bernoulli set
<egg|work|egg>
!wpn Ellied
* Qboid
gives Ellied a dependent scalar with a knife attachment
<egg|work|egg>
!wpn regex
* Qboid
gives regex an unicode superpower
* egg|work|egg
should probably head home
<UmbralRaptor>
!wpn egg|phone|egg
* Qboid
gives egg|phone|egg a Kordylewski rotor
<Ellied>
bofh: I think the only place a trap like this would go unseen until it was too late is, like, some kind of heavy industrial plant, so you could probably find a warm enough place
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<kmath_>
<Newpa_Hasai> Today in unicode shenanigans: ?᷂ (U+1F40D Snake + U+1DC2 Combining Snake Below). Correct rendering not guaranteed.
<SnoopJeDi>
oh neat, I'm leafing through a survey of cyclotrons around the world for prelim writing reasons and our local K500 is listed. This should not surprise me, but it does
<egg|df|egg>
UmbralRaptor: also YIL that python raises eggsceptions on fp overflows/divisions by 0 >_<
* egg|df|egg
sobs
<egg|df|egg>
but not underflows!
* egg|df|egg
sobs
<egg|df|egg>
so that if you want to actually use floating point numbers you use numpy's floating point numbers, not the language's >_>
<UmbralRaptor>
np.sqrt() also does some other suff better than math.sqrt() I want to say.
<egg|df|egg>
UmbralRaptor: well, it doesn't except at you, it properly NaNs and infinities etc. (also has support for complex numbers but that's a separate discussion)
<egg|df|egg>
UmbralRaptor: I may have verbed infinity
<UmbralRaptor>
hrm
<egg|df|egg>
UmbralRaptor: someone made a masterful beak dog leather low boot
<egg|df|egg>
UmbralRaptor: *stares at #Kopernicus backlog*
<egg|df|egg>
so they did their i18n using libs that attempt to do grammar and string concatenation? D':
<Thomas>
They used lingoona
<Thomas>
So yes
* egg|df|egg
cries
* egg|df|egg
bashes head against desk
<egg|df|egg>
well what did I expect
<egg|df|egg>
at least they didn't do the string concatenation directly themselves I guess
* egg|df|egg
bashes laptop against head
<egg|df|egg>
Thomas: any other daftness?
<egg|df|egg>
Thomas: though tbh http://forum.kerbalspaceprogram.com/index.php?/topic/62205-wip122-principia-version-catalan-released-2017-05-25-n-body-and-extended-body-gravitation/&page=30#comment-3076684 :-p
<Thomas>
They integrated ConfigNode with the localization thingy so every time a value from a config node is parsed, all localization strings are checked (and an empty string array gets allocated)
<egg|df|egg>
.
<egg|df|egg>
.
<egg|df|egg>
..
<egg|df|egg>
...
<egg|df|egg>
.....
<egg|df|egg>
........
<UmbralRaptor>
lagomorphic elippses
<UmbralRaptor>
(ellisoidal lagomorphs?)
<egg|df|egg>
Thomas: https://xkcd.com/566/ KSP 1.2.2 was great, it's too bad they never made a version after that? :-p
<SnoopJeDi>
egg|df|egg, I was chitchatting with someone who attended PyCon this year and apparently there was a talk about how Python's native NaNs are weird and not really IEEE NaNs
<egg|df|egg>
SnoopJeDi: frankly if you're going to exception out on overflow, the NaNs are the least of your concerns
<SnoopJeDi>
If I'm doing anything where I'd care, I'm already offloading it to numpy anyway :P
<egg|df|egg>
SnoopJeDi: yeah, but it really becomes just about *anything* though
<egg|df|egg>
SnoopJeDi: like try evaluating exp(-1/x^2)
<egg|df|egg>
assuming a faithfully rounded exp and IEEE arithmetic, just do it as written and you're happy
<SnoopJeDi>
as written it's got a bitwise XOR in it :P
<egg|df|egg>
SnoopJeDi: $\mathrm{e}^{-\frac{1}{x^2}}$ here you go
<egg|df|egg>
with native python floats: handle overflow of the square, division by 0, overflow of the exp :D
<SnoopJeDi>
well yea
<egg|df|egg>
(the function is fairly nicely conditioned too, so you don't have to worry in IEEE arithmetic)
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<egg|df|egg>
UmbralRaptor: an elf returned with a quire taken from starwatch of oxen, but this time is staying for a long-term scholarship
<egg|df|egg>
so... returning the book!
* egg|df|egg
pokes UmbralRaptor with cats
<UmbralRaptor>
egg|df|egg: Perhaps the book convinced them to join the research?
<icefire>
some people are really passionate about their immersive skyrim mods
<SnoopJeDi>
can't even bed the birds? what's the POINT
<SnoopJeDi>
One of the authors at PCGamer took another stab at "Skyrim has a lot of mods, let's check some out!" with a focus on adult mods and...pretty quickly realized the bundle of weirdness he'd stuck his nose into
* egg|df|egg
gives UmbralRaptor a pond turtle shell helm
<UmbralRaptor>
!wpn egg|df|egg
* Qboid
gives egg|df|egg a 2N3906
<egg|df|egg>
UmbralRaptor: so, should I prepare an entrance to the caverns (with adequate precaution to deal with the forgotten stegosaurid)
* egg|df|egg
stabs the stegosaurid with a forgetful functor