nyankosensei

Joined 10 years ago

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154

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Sep 21

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Comment · 21 days ago

I think this is what you’re referring to: https://microsoft.github.io/OpticSim.jl/dev/

Comment · 1 month ago

It was made out of paper sheets printed by the “Great Stella” software available elsewhere on the same site:

https://www.software3d.com/Stella.php

Comment · 1 month ago

Figure 9C in the paper shows testing in a wooded area. Figure 9F shows transmitted data collected in a residential building, so not a test chamber.

Comment · 4 months ago

Thanks for sharing. Very interesting, especially since it’s based on Koka, which I’ve been experimenting with and still trying to wrap my head around. It also reminds me a lot of Shen (https://shenlanguage.org/). I’ll definitely try this out.

How do you pronounce the name?

Comment · 4 months ago

There are many feasibility and safety issues associated with the Reflect Orbital plan. It doesn’t make as much sense as you might think. For instance, the satellites can only illuminate areas a relatively short time after local sunset. The Sun reflection could potentially damage an amateur astronomer’s eye if one of the satellites crosses their telescope’s field of view: https://bigthink.com/starts-with-a-bang/true-cost-solar-powe...

Comment · 4 months ago

See https://news.ycombinator.com/item?id=48433410 for context.

Comment · 5 months ago

The OP includes a link to an English excerpt written by the author of the "Swing, divide and conquer the factorial" manuscript:

http://www.luschny.de/math/factorial/SwingIntro.pdf

Comment · 6 months ago

I noticed from the logo that 2026 is evidently the 75th anniversary of the Lincoln Laboratory.

Comment · 8 months ago

I second this recommendation. For those interested, this is “An interactive application for maths and graphics based on the Lua programming language and the GNU Scientific Library.” for both Windows and Linux. I installed it and keep a shortcut on my Windows desktop for quick calculations.

https://github.com/franko/gsl-shell

Comment · 8 months ago

I appreciate your offer, but there’s no need. I subsequently found a copy here:

https://softwarepreservation.computerhistory.org/LISP/book/A...

Comment · 8 months ago

Maybe I’m missing something, but that webpage only seems to provide a PDF containing the beginning of the book (up through the Preface). Perhaps you need a ACM Digital Library Premium subscription to access the entire book?

Comment · 10 months ago

It’s great that Libbrecht put a copy of his 500+ page ‘Snow Crystals’ book on arXiv [0] before an updated version was published by Princeton University Press [1].

[0] https://arxiv.org/abs/1910.06389 [1] https://press.princeton.edu/books/ebook/9780691223629/snow-c...

Comment · 1 year ago

I completely agree that this is a great resource. BTW, the Springer site book link is https://link.springer.com/book/10.1007/978-3-642-14764-7. I’m thankful that the author has made the book and code freely available.

The author also co-authored a book about historical and state-of-the-art pi computations called Pi Unleashed (https://link.springer.com/book/10.1007/978-3-642-56735-3). The code and additional resources are available at https://extras.springer.com/?query=978-3-642-56735-3. Though somewhat dated (circa 2000), there’s a lot of fascinating information in the 229 Mb zip download, including a 133 char C program (pitiny.c) that computes 15000 digits of pi.