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jonjacky · 2026-06-24T17:59:50 1782323990

I wonder what a hobby OS would have looked like it if it assumed nothing, that is, as a thought experiment ...

There are some hobby OS projects that do this. The best known example is Terry Davis' TempleOS.

https://en.wikipedia.org/wiki/TempleOS

If you only want to please yourself, you can dispense with all that legacy stuff. You can stay busy and enjoy yourself in your own world. Some of the hobby OS listed here look like they might be standalone worlds:

https://github.com/jubalh/awesome-os

jonjacky · 2026-06-23T23:53:22 1782258802

"Did you take that test yourself?"

jonjacky · 2026-06-18T17:49:02 1781804942

Curlie is the successor to DMOZ: https://curlie.org/docs/en/about.html

But Curlie doesn't appear in the website linked in the parent post.

jonjacky · 2026-06-15T03:15:59 1781493359

Grugs are a different species: https://grugbrain.dev/

jonjacky · 2026-06-11T23:59:45 1781222385

In Elif Batuman's 2017 novel The Idiot, about a naive Harvard student, her not-really-a-boyfriend Ivan, a math student, enthuses to her about Emacs. The book is set in 1995.

I enjoyed the book. It got good reviews and was a Pulitzer Prize finalist.

beepbooptheory · 2026-06-12T01:44:10 1781228650

Yes, good book! If I remember correctly, he is just learning emacs and is confounded and a bit annoyed with it. Which sounds about right.

jonjacky · 2026-06-10T23:18:56 1781133536

https://sites.gatech.edu/alexburgin/on-self-respect-by-joan-...

Dramatic sepia photograph contrasts with understated gray text on light gray background with lots of empty space.

jonjacky · 2026-06-10T23:14:11 1781133251

https://dfns.dyalog.com/n_sudoku.htm

Explanation of Sudoku in APL. Lots of information, absolutely no clutter. Entire page is nothing but text in a single precise sans-serif typewriter font, the same size and strength for everything: headings, explanation, code, and tables. Typewriter font includes mathematical symbols.

jonjacky · 2026-06-10T23:01:16 1781132476

https://www.datagubbe.se/short/

Header, body, trailer panels with three complementary background shades that soften the large black sans-serif typography.

jonjacky · 2026-06-04T17:49:48 1780595388

What project was that?

via this discussion in HN: https://news.ycombinator.com/item?id=22729461 (2020) I found:

Writing an OS in Rust: Async/Await (2020) https://os.phil-opp.com/async-await/

Blogging about Midori: Asynchronous Everything (2015) https://joeduffyblog.com/2015/11/19/asynchronous-everything/

jonjacky · 2026-06-04T16:24:12 1780590252

Particles accelerating in a cyclotron at sufficiently high energy reach relativistic speeds. You have to account for their relativistic mass increase to get the cyclotron to work. Figuring this out was a big issue in cyclotron design in the 1930s. The remedy is to strengthen the magnetic field near the outer edge of the cyclotron where particles move fastest, by adding coils there to carry more current. I don't recall what the energy is where this becomes necessary - it is certainly needed at tens of MeV.

Plutonium was first synthesized in a cyclotron by Lawrence's group at Berkeley. I don't know what energy they used so I don't know if they needed the extra coils, but they did know of the effect and must have considered it.

Also, U235 was separated at Oak Ridge using machines called Calutrons invented by Lawrence that might have encountered the same problem -- at least they must have considered it.