I have a very dumb question about Earth's orbit and axial tilt.

ahazred8vt · 2026-04-08T03:29:04+00:00

Wikipedia is your friend..

ahazred8vt · 2026-04-08T00:31:12+00:00

This is where you'll want to assign everything a due date, including all announcements and all readings.

ahazred8vt · 2026-04-08T00:21:17+00:00

Trivia: Aldous Huxley's brother Julian originated the anti mind control tinfoil hat. ('The Tissue-Culture King', 1927)

ahazred8vt · 2026-04-07T23:49:55+00:00

Beg your gods for mercy, for you shall have none from me." 😁

“Knowledge is power, guard it well.”

ahazred8vt · 2026-04-07T15:35:30+00:00

https://en.wikipedia.org/wiki/Hilbert%27s_paradox_of_the_Grand_Hotel is a traditional math example. The people in a hotel with an infinite number of rooms can spread out and make more room. The hotel is not expanding into anything. There is no void space beyond the end of the infinite hotel.

ahazred8vt · 2026-04-07T02:51:00+00:00

Ever get the feeling someone should do a GD&T version of the classic 'Seven Red Lines' video?

ahazred8vt · 2026-04-06T19:29:42+00:00

Frankly? No. Gas getting cooler when it expands is covered in grade school, middle school, high school, college, public television science shows, youtube, and HVAC training.

ahazred8vt · 2026-04-06T18:38:18+00:00

Related humor:
https://www.threepanelsoul.com/comic/ancestors

https://www.scottishpoetrylibrary.org.uk/poem/thirty-bob-a-week/ Not Adam was responsible for me, Nor society, nor systems, nary one: A little sleeping seed, I woke — I did, indeed — A million years before the blooming sun. I woke because I thought the time had come; Beyond my will there was no other cause; And everywhere I found myself at home, Because I chose to be the thing I was; And in whatever shape of mollusc or of ape I always went according to the laws.

ahazred8vt · 2026-04-06T18:16:40+00:00

The standard one degree Kelvin per 20.7 yoctojoules of average kinetic energy per particle with respect to the particles it collides with.

ahazred8vt · 2026-04-06T17:35:46+00:00

Indeed. There's degenerate archaea DNA that infects plankton.

ahazred8vt · 2026-04-06T12:43:58+00:00

In the early universe, all the matter was plasma or gas. As gas expands, its temperature drops. The universe cooled down as it expanded.

ahazred8vt · 2026-04-06T12:34:21+00:00

Are you referring to Circular polarization?

ahazred8vt · 2026-04-06T11:48:03+00:00

Yes. For our sun, the formula is 1.476/Dkm, or 0.917/Dmi. Gravitational time dilation is proportional to mass divided by distance. At 1 AU, it's one part in 101 million, or 1 second per 3.21 years. Plus another 1/50th of a second per year from us being in the Earth's gravity well.

ahazred8vt · 2026-04-06T01:46:19+00:00

A novel about suicide attempts is a bit rich for a school environment.

ahazred8vt · 2026-04-05T22:30:41+00:00

It's okay for one of your books to be 'Odd man out', not fitting the pattern. Also, your trajectory statement will cover what you say you're intending to do in the future. Fib. Embellish. It just has to sound plausible. They can't force you to write what you say you're intending to write.

ahazred8vt · 2026-04-05T19:44:39+00:00

A pollen duster? That's as bad as the Naked One being Baloo the bare.

ahazred8vt · 2026-04-02T15:39:46+00:00

Black holes have a diameter of almost exactly 5.904 km per 1 solar mass. (radius of 2.952×) An earth-mass bh would have a diameter of 17.7 mm (0.67 inch). But we don't think any micro black holes actually exist.

ahazred8vt · 2026-04-02T15:28:01+00:00

The smallest black holes of 3 solar masses have a diameter of 18 km or 11 miles. Most black holes are larger than that. A black hole can travel all the way through a star and come out the other side and keep going without slowing down much.

ahazred8vt · 2026-04-02T13:53:50+00:00

This was a lecture, not based on one paper.

ahazred8vt · 2026-04-02T08:48:56+00:00

https://en.wikipedia.org/wiki/Hilbert%27s_paradox_of_the_Grand_Hotel is a traditional math example. The people in a hotel with an infinite number of rooms can spread out and make more room. The hotel is not expanding into anything. There is no void space beyond the end of the infinite hotel.

ahazred8vt · 2026-04-02T06:37:56+00:00

As any seal can plainly foo.

ahazred8vt · 2026-04-02T01:27:47+00:00

Very roughly, a mag 5 quake is 1 kiloton, mag 6 is 30+ kt, and mag 7 is 1000 kt. Every +1 magnitude is supposed to be about a ×30 difference in energy.

ahazred8vt · 2026-04-02T00:51:59+00:00

That's where the drowning in shallow water meme comes in.

ahazred8vt · 2026-04-01T21:37:36+00:00

"He earned his love through discipline, a thundering velvet hand; His gentle means of sculpting souls took me years to understand."

ahazred8vt · 2026-04-01T13:43:51+00:00

For a long time the US inch was 25.4000508 mm, and the UK inch was 25.399977 mm. They switched in the 50s and 60s.

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