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We Mourn Our Craft

https://nolanlawson.com/2026/02/07/we-mourn-our-craft/
180•ColinWright•1h ago•164 comments

I Write Games in C (yes, C)

https://jonathanwhiting.com/writing/blog/games_in_c/
22•valyala•2h ago•7 comments

Hoot: Scheme on WebAssembly

https://www.spritely.institute/hoot/
124•AlexeyBrin•7h ago•24 comments

SectorC: A C Compiler in 512 bytes

https://xorvoid.com/sectorc.html
17•valyala•2h ago•1 comments

Stories from 25 Years of Software Development

https://susam.net/twenty-five-years-of-computing.html
65•vinhnx•5h ago•9 comments

U.S. Jobs Disappear at Fastest January Pace Since Great Recession

https://www.forbes.com/sites/mikestunson/2026/02/05/us-jobs-disappear-at-fastest-january-pace-sin...
155•alephnerd•2h ago•105 comments

OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
833•klaussilveira•22h ago•250 comments

The AI boom is causing shortages everywhere else

https://www.washingtonpost.com/technology/2026/02/07/ai-spending-economy-shortages/
119•1vuio0pswjnm7•8h ago•148 comments

Al Lowe on model trains, funny deaths and working with Disney

https://spillhistorie.no/2026/02/06/interview-with-sierra-veteran-al-lowe/
57•thelok•4h ago•8 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
1060•xnx•1d ago•612 comments

Reinforcement Learning from Human Feedback

https://rlhfbook.com/
79•onurkanbkrc•7h ago•5 comments

Brookhaven Lab's RHIC Concludes 25-Year Run with Final Collisions

https://www.hpcwire.com/off-the-wire/brookhaven-labs-rhic-concludes-25-year-run-with-final-collis...
4•gnufx•56m ago•1 comments

Start all of your commands with a comma (2009)

https://rhodesmill.org/brandon/2009/commands-with-comma/
487•theblazehen•3d ago•177 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
212•jesperordrup•12h ago•72 comments

France's homegrown open source online office suite

https://github.com/suitenumerique
567•nar001•6h ago•259 comments

Coding agents have replaced every framework I used

https://blog.alaindichiappari.dev/p/software-engineering-is-back
226•alainrk•6h ago•354 comments

A Fresh Look at IBM 3270 Information Display System

https://www.rs-online.com/designspark/a-fresh-look-at-ibm-3270-information-display-system
40•rbanffy•4d ago•7 comments

Show HN: I saw this cool navigation reveal, so I made a simple HTML+CSS version

https://github.com/Momciloo/fun-with-clip-path
9•momciloo•2h ago•0 comments

History and Timeline of the Proco Rat Pedal (2021)

https://web.archive.org/web/20211030011207/https://thejhsshow.com/articles/history-and-timeline-o...
19•brudgers•5d ago•4 comments

Selection Rather Than Prediction

https://voratiq.com/blog/selection-rather-than-prediction/
8•languid-photic•3d ago•1 comments

72M Points of Interest

https://tech.marksblogg.com/overture-places-pois.html
29•marklit•5d ago•3 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
114•videotopia•4d ago•33 comments

Where did all the starships go?

https://www.datawrapper.de/blog/science-fiction-decline
77•speckx•4d ago•82 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
274•isitcontent•22h ago•38 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
201•limoce•4d ago•112 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
287•dmpetrov•22h ago•155 comments

Show HN: Kappal – CLI to Run Docker Compose YML on Kubernetes for Local Dev

https://github.com/sandys/kappal
22•sandGorgon•2d ago•12 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
557•todsacerdoti•1d ago•269 comments

Making geo joins faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
155•matheusalmeida•2d ago•48 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
427•ostacke•1d ago•111 comments
Open in hackernews

Types of optical systems in a lens designer's toolbox (2020)

https://www.pencilofrays.com/lens-design-forms/
83•picture•8mo ago

Comments

elikoga•8mo ago
Potentially relevant:

   Show HN: Torch Lens Maker – Differentiable Geometric Optics in PyTorch (63 days ago) 2025-03-21
https://news.ycombinator.com/item?id=43435438

https://victorpoughon.github.io/torchlensmaker/

alexbock•8mo ago
If you want to play with any of these lens descriptions (or look at code for simulating them), I made a free and open source visual web UI for lens design. The default project when you visit it is a double gauss lens similar to the one shown in the article.

https://alexbock.github.io/open-optical-designer/

Rotundo•8mo ago
Took a look and I'm impressed how easy it is to use. Thanks for sharing this.
librasteve•8mo ago
amazing tool - thanks for sharing
cwmoore•8mo ago
Is there a framework or template base for these kind of (usually scientific) demonstration apps? It’s a common design language of inputs and output that I’ve seen in many pages, often self-explanatory. I like it.
alexbock•8mo ago
Thanks. I did not use any frameworks/libraries/dependencies for this project. It's vanilla JavaScript/HTML/CSS from scratch. The general concept of a spreadsheet-like data editor next to a visual view is a standard paradigm in commercial lens design software like Quadoa/OSLO/CODE V.
turnsout•8mo ago
I absolutely love this, and the development philosophy. Nice work!
joshvm•8mo ago
I always wanted to play with Optica for Mathematica. It seems like a problem that would lend itself really well to the Wolfram way of visual + functional programming. However I've never met anyone who uses it and while academics usually get Mathematica for free, the plugin is pricey.

https://www.opticasoft.com/tour

https://www.opticasoft.com/copy-of-lenslab

jazzyjackson•8mo ago
Hey thanks for posting this, I met Dr Barnhart and his slide-o-scope at Makerspace Urbana some 15 years ago now and was just trying to remember what his software did the other day. One of those synchronicities, glad to see it's still selling. Looks like there's a pared down hobbyist version for less than 200 bucks but can't tell if it's also a Wolfram plug-in or standalone modeling software; I'll have to send the old man an email

https://www.opticasoft.com/product-page/optica-em-for-experi...

NKosmatos•8mo ago
I remember playing around with a lenses and light sources simulator, but can’t find the link :-( If I’m not mistaken it was posted here on HN but couldn’t find it by searching with various related keywords. If anyone has it please share :-)
alexbock•8mo ago
I'm guessing you're referring to https://news.ycombinator.com/item?id=39309409
NKosmatos•8mo ago
Thanks for this!!! My memory isn’t that good, and if you see I had commented in the previous post as well :-)
Xmd5a•8mo ago
>Who this guide is NOT for: [...] People that are okay with becoming a lens design zombie.

https://web.archive.org/web/20230914035459/https://caoyuan.s...

A $500 DIY near-IR spectrometer that would sell for $10,000, Yuan Cao

>The placement of the cylindrical lens (position & angle) affects the focal point for different wavelength. I did not do a rigorous calculation here —— I simply resorted to a trial-and-error method to figure out the optimal placement.

https://news.ycombinator.com/item?id=37498142

contingencies•8mo ago
If you like this sort of thing I highly recommend seeking out a hardcover copy of the last edition of a long-running book, View Camera Technique: 7th Edition. I found it exceptionally well illustrated and very interesting.

https://www.amazon.com/View-Camera-Technique-Leslie-Stroebel...

Somebody in Dongguan once introduced me to the Korean running the iPhone lens assembly production systems (it was outsourced; ~COVID). IIRC they had 13 lens elements at the time and each assembly was characterized and digitally corrected according to its specific optical characteristics. Fascinating guy to talk to over beer. He moved east after that, someplace near Shanghai IIRC.