egg changed the topic of #principia to: Logs: https://esper.irclog.whitequark.org/principia | <scott_manley> anyone that doubts the wisdom of retrograde bop needs to get the hell out | https://xkcd.com/323/ | <egg> calculating the influence of lamont on Pluto is a bit silly…
<queqiao-> ⟨clayel⟩ what is it with principia players and cats anyway, you never see any dogs (this is a request to see dog pictures)
<paculino> I showed one not long ago
<paculino> Here is another photo of her
<queqiao-> ⟨zephyr (she/they)⟩ Some very sleepy pups at my local shelter
<queqiao-> ⟨protongamin⟩ looks so much like the 5 german shepherds we had to keep for a bit after saving a pregnant dog from starvation (She's still here to this day!) and we never heard from them again after giving them to their respective owners
<queqiao-> ⟨protongamin⟩ except for 1, which is still with my aunt and is very big
_whitelogger has joined #principia
_whitelogger has joined #principia
_whitelogger has joined #principia
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ This is a cat.
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ She's very special. A 🏳️‍⚧️ cat.
<queqiao-> ⟨clayel⟩ is this some chemistry joke i dont understand
raptop has quit [Ping timeout: 186 seconds]
raptop has joined #principia
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ ⟪clayel⟫ is this some chemistry joke i dont […] ⮪ In chemistry, a catalyst is sometimes abbreviated as "cat." Here's an example.
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ The catalyst I showed in the photo is a hydrogenation catalyst, which typically adds a pair of hydrogen atoms on the same side of an unsaturation.
<queqiao-> In the example I showed above, you can see that the triple bond received two (implicit) hydrogen atoms on the same side, making the carbon chains on either end point to the right. Such a reaction is known as "cis hydrogenation," which comes from the Latin for "this side of." The figure also showed another notation, the E-Z notation. They come from German and stand for Entgegen (opposite) and Zusammen (together). Here the carbon chains are pointing...
<queqiao-> ... "together," which is why it is marked as (Z).
<queqiao-> ⟨lpg4999⟩ no no no. this channel is for cats and physics. the channel for dogs and chemistry is #skopos
<queqiao-> ⟨egg⟩ But dogs are cats.
<queqiao-> ⟨nolys_⟩ That's a bit of an oversimplification because actually there exists a bijection between the set of cats and the set of dogs
<raptop> dogs are indeed cats. (and spiders are cat interferometers)
<queqiao-> ⟨nolys_⟩ But are cats fermions or bosons? that's the real question.
<queqiao-> ⟨test_account9540⟩ they definitely can't occupy the same place at the same time...
<queqiao-> ⟨(Lu)² (ping me when replying)⟩ ⟪raptop⟫ dogs are indeed cats. (and spiders are […] ⮪ Does that mean we can post spiders here too?
<queqiao-> ⟨nolys_⟩ ⟪test_account9540⟫ they definitely can't occupy the same […] ⮪ Yeah but they look pretty symmetric to me...
<queqiao-> ⟨egg⟩ ⟪(Lu)² (ping me when replying)⟫ Does that mean we can post spiders here […] ⮪ It depends on the spiders. Not Salticidæ.
<queqiao-> ⟨(Lu)² (ping me when replying)⟩ That was the one i wanted to post 😔
<queqiao-> ⟨_itsryan⟩ 🕷️ ∉ 🐶 ⊆ 🐱
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ The catalyst I showed in the photo is a […] ⮪ Cis hydrogenation is far more common than its trans counterpart because hydrogenation reactions typically proceed via the unsaturated molecule and hydrogen binding simultaneously to the catalyst, and then the two hydrogen atoms migrate onto the unsaturation in the same orientation, so they necessarily furnish cis-products primarily. However, the catalyst...
<queqiao-> ... (or cat.) I posted do hydrogenation via forming a noncanonical intermediate that you don't need to know the detail of, and selectively form the trans-hydrogenation product, or Entgegen, with a selectivity of 99:1. This is why the catalyst is known as a 🏳️‍⚧️ hydrogenation catalyst.
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ ⟪nolys_⟫ But are cats fermions or bosons? that's […] ⮪ Behold, each cat occupies exactly one state. Therefore it is clearly a Fermion.
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ Behold, each state is exactly occupied by one cat. Therefore it is clearly a Fermion.
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ But, if you cool the cats to really low temperature, they can form Cooper pairs and become Bosons, so many cats can occupy the same state.
<queqiao-> ⟨Quadrupole🇵🇸🇸🇾🇨🇺⟩ Behold, each state is occupied by exactly one cat. Therefore it is clearly a Fermion.
<queqiao-> ⟨clayel⟩ cuatum physics
<queqiao-> ⟨Al₂Me₆⟩ ⟪Quadrupole🇵🇸🇸🇾🇨🇺⟫ She's very special. A 🏳️‍⚧️ cat. ⮪ Huh, didn’t know you are a chemist. Cool!
<queqiao-> ⟨Al₂Me₆⟩ ⟪Quadrupole🇵🇸🇸🇾🇨🇺⟫ This is a cat. ⮪ 🎹🪑
<queqiao-> ⟨.auer⟩ question: Let´s say that I have a maneuver done with an activated engine, that just ends his burning, and I forgot to stage it, and plot the maneuver with that engine, then, I realize it about the engine and stage it and then activate the engine for next stage, being this one that will be used for the plotted maneuver, and it is different from the previous one.
<queqiao-> ⟨.auer⟩ so, that maneuver is still valid? or I need to redone the mneuver with the right engine?
<queqiao-> ⟨.auer⟩ * maneuver
<queqiao-> ⟨.auer⟩ question: Let´s say that I have a maneuver plotted with an activated engine, that just ends his burning, and I forgot to stage it, and plot the maneuver with that engine, then, I realize it about the engine and stage it and then activate the engine for next stage, being this one that will be used for the plotted maneuver, and it is different from the previous one.
<queqiao-> ⟨Marsh⟩ Yes and no? I think the planner counts in delta v, but the TWR will be all wrong thus the initial burn time will be off
<queqiao-> ⟨lpg4999⟩ the Rebase button (among other things) will cause principia to notice the engine change and re-plot the prediction
<queqiao-> ⟨Kirk (He/Him)⟩ ⟪Al₂Me₆⟫ Huh, didn’t know you are a chemist. […] ⮪ Why does this discord seem to attract chemists
<queqiao-> ⟨Kirk (He/Him)⟩ Like, three oranges are chemists (or chemical engineers)
<queqiao-> ⟨rhamnous07⟩ ⟪Kirk (He/Him)⟫ Why does this discord seem to attract […] ⮪ Rocketry and chemistry are like cats and catnip
<queqiao-> ⟨lpg4999⟩ it's all John Clark's fault
<queqiao-> ⟨.auer⟩ ⟪lpg4999⟫ the Rebase button (among other things) […] ⮪ ah ok, will try that
<queqiao-> ⟨.auer⟩ on another note, has anyone here ever had plotted a maneuver using the data from TWP and getting the predicted (by TWP) Dv costs? it has never been the case for me, I always get off by over 1k of Dv
<queqiao-> ⟨Marsh⟩ TWP is never perfect for me, but it’s nowhere near that far off. It sounds like something is wrong, either your initial orbit does not make TWP, or something is wrong with your principia flight plan (such as using the wrong reference frame)
<queqiao-> ⟨Marsh⟩ * match
<queqiao-> ⟨.auer⟩ ⟪Marsh⟫ TWP is never perfect for me, but it’s […] ⮪ I have even tried getting the right orbit using ascent guidance
<queqiao-> ⟨.auer⟩ which also likes to use ALL the available fuel for an orbit of around 200 km....
<queqiao-> ⟨Marsh⟩ You should be using ascent guidance (pvg) for _all_ of your orbits. You need to reach the conditions TWP gives you. Things such as launching to the correct inclination, lan, and on or near the correct day. If you can manually fly better than PVG then the settings must be way off
<queqiao-> ⟨.auer⟩ ⟪Marsh⟫ You should be using ascent guidance […] ⮪ yeah I was checking and it seems that I was doing the plotting on TWP without setting the inclination of the launch site...
<queqiao-> ⟨nolys_⟩ ⟪Quadrupole🇵🇸🇸🇾🇨🇺⟫ But, if you cool the cats to really low […] ⮪ Oh my, I didn't know catum physics was that advanced