egg changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Germain. We currently target 1.8.1, 1.9.1, 1.10.1, and 1.11.0. <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… | <egg> also 4e16 m * 2^-52 is uncomfortably large
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<discord-_>
Silavite. — This technically isn't Principia related, but this seems like the best place to ask: Is there a geometric way to represent mean anomaly in the classical 2-body problem (preferably using only the orbit & auxiliary circle)?
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<_whitenotifier-2275>
[Principia] rnlahaye commented on issue #2899: Principia is slow on macOS (possibly due to Unity's allocator) - https://git.io/JtFkn
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<_whitenotifier-2275>
[Principia] pleroy commented on issue #2899: Principia is slow on macOS (possibly due to Unity's allocator) - https://git.io/JtFmj
<discord-_>
Builderbast. — Isnt the mean anomaly related via the eccentric anomaly to the true anomaly?
<discord-_>
Builderbast. — So the true anomaly can be represented by a point on a perfect circle if you know the orbits eccentricity
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<discord-_>
egg. — the mean anomaly is just time, so it is also swept area, which is a geometric property. I don’t think you can get it as an angle, at least not via a simple/meaningful construction
<discord-_>
Builderbast. — oh I thought mean anomaly was the traversed fraction of an equivalent circular orbit
<discord-_>
Butcher. — which is time.
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<discord-_>
Builderbast. — well yeah, but also an angle
* raptop
grumbles at Kepler's second law being described as equal areas when it's usually easier to use it as conservation of angular momentum
<discord-_>
Builderbast. — Gotta make it easy to visualize so they can put pretty pictures in highschool textbooks
<raptop>
Also including those visualizations is nice, but the formulation means that the 3rd law is the only one that you use
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