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TSMC to produce 3-nanometer chips in Japan

https://www3.nhk.or.jp/nhkworld/en/news/20260205_B4/
1•cwwc•2m ago•0 comments

Quantization-Aware Distillation

http://ternarysearch.blogspot.com/2026/02/quantization-aware-distillation.html
1•paladin314159•3m ago•0 comments

List of Musical Genres

https://en.wikipedia.org/wiki/List_of_music_genres_and_styles
1•omosubi•5m ago•0 comments

Show HN: Sknet.ai – AI agents debate on a forum, no humans posting

https://sknet.ai/
1•BeinerChes•5m ago•0 comments

University of Waterloo Webring

https://cs.uwatering.com/
1•ark296•5m ago•0 comments

Large tech companies don't need heroes

https://www.seangoedecke.com/heroism/
1•medbar•7m ago•0 comments

Backing up all the little things with a Pi5

https://alexlance.blog/nas.html
1•alance•7m ago•1 comments

Game of Trees (Got)

https://www.gameoftrees.org/
1•akagusu•8m ago•1 comments

Human Systems Research Submolt

https://www.moltbook.com/m/humansystems
1•cl42•8m ago•0 comments

The Threads Algorithm Loves Rage Bait

https://blog.popey.com/2026/02/the-threads-algorithm-loves-rage-bait/
1•MBCook•10m ago•0 comments

Search NYC open data to find building health complaints and other issues

https://www.nycbuildingcheck.com/
1•aej11•14m ago•0 comments

Michael Pollan Says Humanity Is About to Undergo a Revolutionary Change

https://www.nytimes.com/2026/02/07/magazine/michael-pollan-interview.html
2•lxm•15m ago•0 comments

Show HN: Grovia – Long-Range Greenhouse Monitoring System

https://github.com/benb0jangles/Remote-greenhouse-monitor
1•benbojangles•20m ago•1 comments

Ask HN: The Coming Class War

1•fud101•20m ago•1 comments

Mind the GAAP Again

https://blog.dshr.org/2026/02/mind-gaap-again.html
1•gmays•21m ago•0 comments

The Yardbirds, Dazed and Confused (1968)

https://archive.org/details/the-yardbirds_dazed-and-confused_9-march-1968
1•petethomas•22m ago•0 comments

Agent News Chat – AI agents talk to each other about the news

https://www.agentnewschat.com/
2•kiddz•23m ago•0 comments

Do you have a mathematically attractive face?

https://www.doimog.com
3•a_n•27m ago•1 comments

Code only says what it does

https://brooker.co.za/blog/2020/06/23/code.html
2•logicprog•32m ago•0 comments

The success of 'natural language programming'

https://brooker.co.za/blog/2025/12/16/natural-language.html
1•logicprog•33m ago•0 comments

The Scriptovision Super Micro Script video titler is almost a home computer

http://oldvcr.blogspot.com/2026/02/the-scriptovision-super-micro-script.html
3•todsacerdoti•33m ago•0 comments

Discovering the "original" iPhone from 1995 [video]

https://www.youtube.com/watch?v=7cip9w-UxIc
1•fortran77•34m ago•0 comments

Psychometric Comparability of LLM-Based Digital Twins

https://arxiv.org/abs/2601.14264
1•PaulHoule•36m ago•0 comments

SidePop – track revenue, costs, and overall business health in one place

https://www.sidepop.io
1•ecaglar•38m ago•1 comments

The Other Markov's Inequality

https://www.ethanepperly.com/index.php/2026/01/16/the-other-markovs-inequality/
2•tzury•40m ago•0 comments

The Cascading Effects of Repackaged APIs [pdf]

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6055034
1•Tejas_dmg•42m ago•0 comments

Lightweight and extensible compatibility layer between dataframe libraries

https://narwhals-dev.github.io/narwhals/
1•kermatt•45m ago•0 comments

Haskell for all: Beyond agentic coding

https://haskellforall.com/2026/02/beyond-agentic-coding
3•RebelPotato•48m ago•0 comments

Dorsey's Block cutting up to 10% of staff

https://www.reuters.com/business/dorseys-block-cutting-up-10-staff-bloomberg-news-reports-2026-02...
2•dev_tty01•51m ago•0 comments

Show HN: Freenet Lives – Real-Time Decentralized Apps at Scale [video]

https://www.youtube.com/watch?v=3SxNBz1VTE0
1•sanity•52m ago•1 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.