raptop 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> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
<egg|laptop|egg>
bofh: we need to define an international standard for cat loudness
APlayer has quit [Read error: Connection reset by peer]
<bofh>
egg|laptop|egg: I mean dBSPL at some standard distance away from the cat using a directional mic works.
<bofh>
next time I'm around I can bring the thing I used to record the Saint-Sulpice concertos on along :P
<egg|laptop|egg>
I feel like we should standardize that procedure more
<egg|laptop|egg>
so that measurements can be compared without having to bring you to every cat in the world
<egg|laptop|egg>
bofh: for instance, should the measurement be corrected for temperature, pressure, or humidity
<egg|laptop|egg>
pressure is, of course, variable,
<egg|laptop|egg>
bofh: how do the uncertainty in the distance measurement be factored into the output quantity,
<egg|laptop|egg>
s/do/should/ or something like that
<galois>
egg|laptop|egg meant to say: bofh: how should the uncertainty in the distance measurement be factored into the output quantity,
<bofh>
egg|laptop|egg: I mean you don't have to bring *me* along, just a standard reference microphone :p
<egg|laptop|egg>
if you have to have a reference microphone in a vault in Sèvres it's not ideal
<egg|laptop|egg>
a reference cat
<egg|laptop|egg>
and then bring the cat to other cats for calibration of national standards
<UmbralRaptop>
International Prototype Bofh
<bofh>
egg|laptop|egg: I mean we have microphone tolerances down so well that just specifying manufacturer and model honestly suffices.
<bofh>
(my personal choice would be Shure SM58)
<bofh>
UmbralRaptop: I'm pretty sure there's only one of me; the alternative sounds distressing. :P
<egg|laptop|egg>
bofh: specifying manufacturer and model won't fly as an international standard; what if the manufacturer disappears or their model is discontinued or a national body cannot procure that model
<egg|laptop|egg>
bofh: that's no way to do good metrology
<egg|laptop|egg>
clearly the cats must be traceable to the SI definitions
<bofh>
egg|laptop|egg: I mean if we want to do metrology on that level of precision then the only thing to do is to create precise instructions to recreate a microphone sufficiently equivalent to one in a vault in Sèvres
<egg|laptop|egg>
I don't think you fundamentally need a prototype, after all they have managed to get rid of the last one in their definition of the kg
<egg|laptop|egg>
traceability of cats seems like a good idea though
<egg|laptop|egg>
bofh: now, otoh, for cheese,
<UmbralRaptop>
Given that cats are quantum objects, would the no clone theorem present replicability problems?
<egg|laptop|egg>
hm, so the tesseral terms stabilize a near-semisynchronous orbit (молния in this case) into something that oscillates about semisynchronicity? huh
_whitelogger has joined #kspacademia
pizzaoverhead has quit [Ping timeout: 202 seconds]
<egg|laptop|egg>
bofh: remember this long-period oscillation of the sidereal period?
<egg|laptop|egg>
(on a молния orbit)
<egg|laptop|egg>
the oscillator of the day is brought to you by: the 𝐶₂₂ and 𝑆₂₂ coefficients
<bofh>
that... actually makes intuitive sense to me, weirdly, though I can't for the life of me tell you *why*.
<egg|laptop|egg>
bofh: the (surface, not celestial) longitude of the ascending node ends up oscillating about +158.755(42)° in the presence of these sectoral terms
<egg|laptop|egg>
in their absence there's nothing to tie the rotation of the Earth to the orbit, which seems to have the effect that arbitrary other perturbations nudge the orbit into something no longer synchronous
<egg|laptop|egg>
longitude of the ascending node ends up oscillating about +158.755(42)° << longitude of every other ascending node that is, since this is semisychronous
<egg|laptop|egg>
bofh: a bit like the fact that there are only two stable points and two unstable points in GEO, and the rest needs stationkeeping
<bofh>
21:09:25 < egg|laptop|egg> bofh: the (surface, not celestial) longitude of the ascending node ends up oscillating about +158.755(42)° in the presence of these sectoral terms