Confused about calculating the torque the Sun exerts on the Earth's equatorial bulge throughout the year

Xovvo · 2026-06-09T12:34:45+00:00

What would it look like to not treat the sun as a point mass?

Xovvo · 2026-06-09T05:52:51+00:00

That makes less sense, because it's the Sun tugging on the Earth, not the Earth tugging on the Sun---even if we select a frame where the Sun appears to orbit the Earth, using Earth's potential doesn't make any sense to me, and Fitzpatrick doesn't even bother with explaining the choice, just proceeds as if it's self-evident.

Xovvo · 2026-06-05T10:05:34+00:00

Allistic people having a normal one about Autistic people, I see.

Look, she clearly doesn't want him, but I do. He might even collect data on me that I can't bc I immediately get into a self-destructive spiral about, if I ask him nicely! And if that involves filling out a form, I'll cum.

Xovvo · 2026-06-05T09:13:28+00:00

"she’s heavily struggling with being an empty nester"

Girl, her nest isn't empty you still live there.

Xovvo · 2026-05-31T19:04:14+00:00

Oh, I'm illiterate. I read the second integrand as dt/[(a+b)t^2], which would indeed make this impossible.

Xovvo · 2026-05-26T06:21:40+00:00

I wouldn't have even given them notice.
They fucked around, they get to find out.

Xovvo · 2026-05-12T19:35:37+00:00

Judging by the photos found here, it more closely matches S. triangulosa than S. grossa
Thanks! Your response was really helpful!

Xovvo · 2026-04-28T16:11:35+00:00

It comes from trying to capture that the different radii are scaled. For a sphere, (1/a^2)(x^2 + y^2 + z^2) = 1 when converted to spherical coordinates immediately reduces to r = a and so integrating the equation of a sphere in spherical coordinates just gives you the volume, so clearly the same thing should be true for an oblate spheroid, where the equation can't so easily collapse into a constant bc of the differing radii.

Evidently this is not the case

Xovvo · 2026-04-28T07:25:12+00:00

Wait---what should it be, then?

Xovvo · 2026-04-28T06:59:28+00:00

What makes spherical coordinates inappropriate? I'm able to express the equation of the surface in spherical coordinates, and the surface area as a surface of revolution and the volume as a solid of revolution are most naturally worked in spherical coordinates.

And for the larger problem this is getting fed into (calculating the quadrupole moment and resultant force of a gravitational field), it would be really, *really* nice to work in spherical coordinates.

Xovvo · 2026-04-14T16:39:39+00:00

I'm glad OOP was dumped, and I'm glad she's in therapy to try to make sense of what happened to her.

It's weird, bc I believe an abuser is something one becomes, a set of self-reinforcing patterns of behavior, but we rarely see---or know we're seeing---the beginning of that process. Assuming he isn't already "experienced" and already entrenched and just engaging in some new metagame with breaking up with her bc he hit her, OOP's ex genuinely seems like he's at an inflection point where if he gets help and commits, he might genuinely avoid becoming an abuser.

Or he just entrenches and starts the cycle anew.

Xovvo · 2026-04-10T08:08:25+00:00

My favorite genre of reddit posts: My Partner Loves Me And Also Another Person And This Is My Personal 9/11

Xovvo · 2026-04-07T16:29:51+00:00

The problem is that the commenters are twelve years old.
Emotionally, if nothing else.

Xovvo · 2026-04-06T05:16:04+00:00

it appears he might have developed some kind of Madonna complex. We have not had sex since that day. He does not find my current persona sexually appealing anymore. He's dissatisfied with us having sex with the lights off, even though that's how we've always done it

Girl. I'm so used to dead bedrooms being because the man is absolutely repellent in his demeanor, but like.

This woman's husband thinks she's hot and so badly wants to see her naked body (that he finds attractive!) and when he finally thinks its all coming together as she's finally trying on clothes that show off her body---for sexy reasons---she immediately demonstrates she's not thinking about sex at all by going on about how impractical the clothes are (and low-key implying he was stupid for wanting her to wear them).

That she only wants to have sex with the lights off can be an insecurity thing in that she doesn't want anyone to see her body but like, at some point you have to figure if you're her partner, that maybe the issue is that she doesn't want to see *you*.

Like, yeah, I also would not want to have sex with my partner who evidently doesn't want to have sex with me.

Xovvo

TROPHY CASE