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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<UmbralRaptor>
The pay is (of course) a lie.
<UmbralRaptor>
Or a lye if you go into chem.
<soundnfury>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor a bicyclops
* UmbralRaptor
installs SCORPION STARE on the bicyclops.
<kmath>
<Newpa_Hasai> I'm allowed to #stab people who give c:\somepath when I ask for a link, right?
<whitequark>
no, but you can beat them
<GreeningGalaxy>
whoops I accidentally stayed up till 11 PM trying to debug my third-generation photon counter prototype
<GreeningGalaxy>
solder -> test -> doesn't work -> look for problems -> find problem -> cuss -> figure out how to fix problem -> GOTO 1;
<GreeningGalaxy>
my new dissection scope makes things easier in that I can find tiny problems more easily, but my solder bridges look 100% more disgusting up close
<soundnfury>
GreeningGalaxy: yeah well I accidentally stayed up till nearly 6AM writing a comsat constellation visualisation tool
<whitequark>
GreeningGalaxy: more flux
<whitequark>
always more flux
<soundnfury>
whitequark: only as much flux as the integral of the divergence over the enclosed volume :P
* soundnfury
stokes the fire
* whitequark
puts soundnfury into the fire
<soundnfury>
Ow.
* soundnfury
turns Green
<whitequark>
are you RoHS compliant now?
<soundnfury>
no-one is ever truly RoHS compliant
<soundnfury>
the RoHS that can be complied with is not the true RoHS
<soundnfury>
oh incidentally, by Stokes-ing the fire I increased its Kelvin, forgot to mention that
* whitequark
puns soundnfury into the fire
* soundnfury
leaves, because 6am zzzzzzzzzzzzzzzzzzzzzzzzz
<egg|phone|egg>
!Tell whitequark I use my glassware only for food and drink, do that's another approach :-p
<Qboid>
egg|phone|egg: I'll redirect this as soon as they are around.
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<egg|phone|egg>
S/do/so
<Qboid>
egg|phone|egg meant to say: !Tell whitequark I use my glassware only for food and drink, so that's another approach :-p
<whitequark>
I suppose
<Qboid>
whitequark: egg|phone|egg left a message for you in #kspacademia [02.04.2017 08:33:56]: "I use my glassware only for food and drink, do that's another approach :-p"
<kmath>
<whitequark> @eddyb_r @FrozenFire @DJSnM enough with the unum cult okay
<egg|zzz|egg>
whitequark: also, yeah, I've thought about this a few times https://twitter.com/whitequark/status/812928323613433857 if you're doing it multiplayer you have to have keep players at nonrelativistic speeds to each other :-\
<kmath>
<whitequark> @eddyb_r @FrozenFire @DJSnM I'm really bitter that there are basically no nice ways to add relativity to sandboxes.
<egg|zzz|egg>
well... there's the other solution
<egg|zzz|egg>
*actually* move the players at the right speed
<egg|zzz|egg>
>_>
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<whitequark>
egg|zzz|egg: what do you have for the unum cult
<egg|zzz|egg>
whitequark: ? I'm not a unum cultist
<egg|zzz|egg>
all hail Kahan
<egg|zzz|egg>
his rants are fun to read at times :-p
<Iskierka>
you could do relativity in SP nicely enough by picking a universal reference (oh the irony) and including all the relativistic equations while tracking things. in MP the time makes it a problem no matter how you do it if you want accuracy
<egg|zzz|egg>
in singleplayer there's no fundamental reason why it'd break down, you can follow the player's proper time
<egg|zzz|egg>
in multiplayer, well, it's hard to make the player's clocks tick differently :-p
<Iskierka>
since the player can move between things you might want to use something else's proper time in the savefile for more consistency, but yes
<egg|zzz|egg>
yeah, the simulation can use some other time, but fundamentally it's going to be driven by their proper time
<egg|zzz|egg>
whitequark: btw, the next version of principia will allow you to plot trajectories in the target's LVLH frame, hopefully helping with rendez-vous
<whitequark>
LVLH?
<Qboid>
whitequark: [LVLH] => Local Vertical, Local Horizontal
<whitequark>
thanks Qboid
<Iskierka>
coming in ~22 days? (memory guesstimating last release)
<egg|zzz|egg>
(or ОСК if you like the russian terminology; the axes are actually different from either convention in our implementation because reasons)
<egg|zzz|egg>
Iskierka: scheduled for the 26th around noon UTC
<egg|zzz|egg>
Iskierka: I guess now if we're delayed for some reason we have to slow down the moon
<egg|zzz|egg>
the axes conventions are x_egg = z_LO = -y_ОСК, y_egg = -x_LO = -x_ОСК, z_egg = -y_LO = -z_ОСК
<Iskierka>
but if you slow the moon down it'll orbit faster
<Qboid>
egg|zzz|egg: [HARPS] => High Accuracy Radial velocity Planet Searcher
<SnoopJeDi>
Lucianne Walkowicz came out for post-Festival drinks last night \o/
<bofh>
whitequark: ooh
<egg|zzz|egg>
e_14159: counterpoint: we're talking about Augustus here
<e_14159>
egg|zzz|egg: There is never a reason not to quote xkcd.
<whitequark>
bofh: for best results run at 1.5x
<whitequark>
or for you, probably at 2x
<e_14159>
egg|zzz|egg: There are times when you do pull of the most beautiful mathematician's answer; completely unhelpful - only to realize that you actually *are* helping, since your conversational partner really does not find it obvious at all.
<egg|zzz|egg>
e_14159: e.g. "Earth is not tilted with respect to Earth"
<e_14159>
"angles"
<bofh>
whitequark: 1.75x seems around ideal actually in my case
<bofh>
washing machine? rofl
<whitequark>
bofh: I *love* the washing machine one
<egg|zzz|egg>
e_14159: I have reached the point where willfully unhelpful egg is linking special reports of IAU working groups :-p
egg|zzz|egg is now known as egg|tea|egg
<bofh>
oh wow it's the washing machine from the harlem shake videos
<e_14159>
egg|tea|egg: I'd like to say something, but I am quite speechless.
<whitequark>
bofh: what
<whitequark>
is that like The washing machine
<whitequark>
i was not aware
<bofh>
1
<bofh>
so it just looks familiar
<egg|tea|egg>
e_14159: tbh, it *is* the best documentation for what those numbers mean
<egg|tea|egg>
that's what we used to implement rotational elements :D
<egg|tea|egg>
tea time
<e_14159>
True enough.
egg|tea|egg is now known as egg
<egg>
e_14159: goodness I'm gone for literally 10 minutes and he gets all eggspammy
<e_14159>
egg
<egg>
!wpn e_14159
* Qboid
gives e_14159 a radio group-like laser
<e_14159>
egg?
<egg>
>_>
<e_14159>
EGG
<egg>
hah
<e_14159>
(Apologies. Couldn't resist)
<egg>
aw, phl might remove our only goto while doing his current refactoring
<e_14159>
Add a goto onto the next line somewhere?
<egg>
e_14159: it was a nice goto, into the middle of a doubly-nested loop, with a non-ASCII label
<egg>
e_14159: surprisingly that tends to break more things than the cyrillic :D
<e_14159>
o_O
<soundnfury>
this bag of crisps has an astrological use-by date
<soundnfury>
"Best before: Taurus"
<soundnfury>
(tbf it does say "08 07 17" on the next line, which is _probably_ a DD MM YY date, but still)
<egg>
soundnfury: nah that means it's best before being trampled by a bull
<e_14159>
soundnfury: Next nerdnight I'm having, I want to to a presentation on "Date formats, and why ISO-date is the best."
<soundnfury>
egg: well, they are beef flavoured, and according to the ingredients there is a nonzero amount of actual beef in them
<egg>
e_14159: what's a nerdnight
<e_14159>
egg: m people meet; n (n < m) people present some nerdy topic.
<egg>
e_14159: clearly we should have ANBO general assemblies where we do that :-p
<e_14159>
Last time, we had "PTSD using the Lion King as an example"; "Why people like me aren't good at presenting stuff on nerdnights", "plugs" and "forensic alcohology" (is that even a word?) among others.
<egg>
if only because then the acronym would sound like we're eating beef and chicken, ăn bò gà
<soundnfury>
egg: yeah, but some people wouldn't put effort into their talks - they'd just Phở it in
<soundnfury>
!u �
<Qboid>
U+FFFD REPLACEMENT CHARACTER (�)
<soundnfury>
le sigh
egg is now known as egg|reviewing_code|egg
<egg|reviewing_code|egg>
e_14159: you are very kind to assume that I have a life outside of IRC :-p
<e_14159>
egg: You do.
<e_14159>
Principia and astronomy :P
<egg|reviewing_code|egg>
:D
<bofh>
egg|reviewing_code|egg: so like in their defense, most crisps are best before being trampled by a bull
<egg|reviewing_code|egg>
true
<egg|reviewing_code|egg>
bofh: I'm not sure I want to eat crisps that can withstand that without damage
<bofh>
now I'm wondering how strong of an acid you need to protonate Yttria, thanks
<GreeningGalaxy>
probably about 30 strong
<egg|reviewing_code|egg>
bofh: uhh
<bofh>
oh, concentrated HCl will work
<bofh>
gives you YCl3 * 6H2O
egg|reviewing_code|egg is now known as egg|factoring|egg
<egg|factoring|egg>
code, not integers
<bofh>
sadly ZrO2 is not, you need hot H2SO4 to dissolve it
<soundnfury>
egg|factoring|egg: but a program (or any other computer file) is just a large integer!
<soundnfury>
(I mean, normal-people large. Not "here, have an uncountable ordinal" mathematician-large.)
<bofh>
so making the crisps out of Yttria alone would be fine but I'm not sure that its Vickers Hardness is high enough to withstand trampling by a bull
<bofh>
but YSZ would probably be indigestible
* soundnfury
gives bofh a ‘K’ gun
<bofh>
!wpn soundnfury
* Qboid
gives soundnfury a resistive turbine/explosion hybrid
<bofh>
I think Pratt&Whitney made those a few times, accidentally
<bofh>
soundnfury: so, like, none of the ordinals are elements of Z so I'm a bit confused why the clarification :p
<soundnfury>
bofh: I should probably have said "here, have a graham cracker" instead...
<soundnfury>
(or possibly a graham Acker... yikes)
<UmbralRaptor>
I, er, logged out and re-registered.
<egg>
ah, yes,
<UmbralRaptor>
egg: The photon noise thing is trying to figure out how precisely you can measure the radial velocity of a star that is (mostly) just sitting there.
<UmbralRaptor>
No sunspots or granulation! \o/
<UmbralRaptor>
Some errors are things like your CCD not reading electrons perfectly, some is the absorption lines being doppler-broadened by the star spinning, some is that the lines have finite width, and some is because the # of photons per resolution element varies randomly.
<egg>
also, what's the abbreviation for their RT equivalent? it's called boost, so Δv?
<UmbralRaptor>
The last one matters if you're down at only a few photons per exposure, but not so much if you can get tens of thousands.
<kmath>
YouTube - Cat bot pulleys and whatever else we can CAD today @scanlime-in-progress
<UmbralRaptor>
Cat appears to be sleeping.
<egg>
yes
<egg>
they do that
<UmbralRaptor>
Hrm. Not familiar with autodesk fusion.
<soundnfury>
desk fusion? is that like joining tables?
<egg>
UmbralRaptor: neither am I, but there's a cat
<egg>
cat is being scritched
<egg>
huh, there's a claw between the hand and the thumb
<egg>
(this cat has thumbs)
<egg>
ow cat went away
<UmbralRaptor>
soundnfury: Given how much heat computers put out, the auto- part is likely highly exothermic.
<whitequark>
lol
<egg>
!wpn whitequark
* Qboid
gives whitequark a strict group
<soundnfury>
UmbralRaptor: maybe it's gluing tables to cars?
<soundnfury>
!wpn egg
* Qboid
gives egg an ovoid blaster
<soundnfury>
approprioid
* UmbralRaptor
assumes that egg will zap _Augustus_ with it.
<egg>
nice, the longitude of my ascending node is within 97 ULPs of the input longitude of ascending nodes \o/
<soundnfury>
LAN? that sounds awfully like a keplerian elephant, what's that doing in eggland?
<soundnfury>
(osculating elephants perhaps?)
<egg>
ah but we have a definition of generalized nodes
<egg>
that coincides with the Keplerian definition in the Keplerian case, but works with arbitrary trajectories
<egg>
(intersections with the reference plane of the trajectory in the LVLH reference plane of the target)
<egg>
s/plane of the target/frame of the target/
<Qboid>
egg meant to say: (intersections with the reference plane of the trajectory in the LVLH reference frame of the target)
<soundnfury>
how is that reference plane defined?
<egg>
soundnfury: which is why that statement is not trivial: the nodes found by looking for the intersection of the integrated trajectory with the plane have the longitude given to our Keplerian-to-Cartesian converter
<egg>
(in a test)
<egg>
soundnfury: the reference plane is the plane wherein lies the line between the target vessel and the chosen reference body, and orthogonal to the angular velocity to the target vessel-reference body system
<GreeningGalaxy>
what I should be doing today: homework, trying to fix my prototype. How I spent the afternoon: writing an SSH for Physicists guide.