HN Reader

NIST scientists create 'any wavelength' lasers

(www.nist.gov/news-events/news/2026/04/any-color-you-nist-scientists-create-any-wavelength-lasers-tiny-circuits)

84 points by rbanffy 3 hours ago | loading comments

Anonymous request-token comparisons from Opus 4.6 and Opus 4.7

(tokens.billchambers.me/leaderboard)

387 points by anabranch 7 hours ago | loading comments

The electromechanical angle computer inside the B-52 bomber's star tracker

(www.righto.com/2026/04/B-52-star-tracker-angle-computer.html)

237 points by NelsonMinar 7 hours ago | loading comments

Thoughts and feelings around Claude Design

(samhenri.gold/blog/20260418-claude-design/)

179 points by cdrnsf 4 hours ago | loading comments

Optimizing Ruby Path Methods

(byroot.github.io/ruby/performance/2026/04/18/faster-paths.html)

32 points by weaksauce 3 hours ago | loading comments

Modern Common Lisp with FSet

(fset.common-lisp.dev/Modern-CL/Top_html/index.html)

53 points by larve 3 days ago | loading comments

Migrating from DigitalOcean to Hetzner

(isayeter.com/posts/digitalocean-to-hetzner-migration/)

652 points by yusufusta 10 hours ago | loading comments

State of Kdenlive

(kdenlive.org/news/2026/state-2026/)

322 points by f_r_d 12 hours ago | loading comments

Traders placed over $1B in perfectly timed bets on the Iran war

(www.theguardian.com/world/2026/apr/18/iran-war-bets-ethics-concerns)

205 points by trocado 5 hours ago | loading comments

10.

Michael Rabin has died

(en.wikipedia.org/wiki/Michael_O._Rabin)

377 points by tkhattra 3 days ago | loading comments

11.

Show HN: MDV – a Markdown superset for docs, dashboards, and slides with data

(github.com/drasimwagan/mdv)

82 points by drasim 8 hours ago | loading comments

12.

Sumida Aquarium Posts 2026 Penguin Relationship Chart, with Drama and Breakups

(www.sumida-aquarium.com/special/sokanzu/en/2026/)

152 points by Lwrless 3 days ago | loading comments

13.

PgQue: Zero-Bloat Postgres Queue

(github.com/NikolayS/pgque)

66 points by gmcabrita 7 hours ago | loading comments

14.

Floating Point Fun on Cortex-M Processors

(danielmangum.com/posts/floating-point-cortex-m/)

28 points by hasheddan 2 days ago | loading comments

15.

College instructor turns to typewriters to curb AI-written work

(sentinelcolorado.com/uncategorized/a-college-instructor-turns-to-typewriters-to-curb-ai-written-work-and-teach-life-lessons/)

85 points by gnabgib 5 hours ago | loading comments

16.

Show HN: SmallDocs - Markdown without the frustrations

()

40 points by FailMore 4 days ago | loading comments

17.

Scientists discover "cleaner ants" that groom giant ants in Arizona desert

(www.sciencedaily.com/releases/2026/04/260414075641.htm)

66 points by t-3 3 days ago | loading comments

18.

UpCodes (YC S17) is hiring SDRs to help make construction more productive

(up.codes/careers?utm_source=HN)

1 points by Old_Thrashbarg 7 hours ago | loading comments

19.

80386 Memory Pipeline

(nand2mario.github.io/posts/2026/80386_memory_pipeline/)

77 points by wicket 4 days ago | loading comments

20.

Show HN: AI Subroutines – Run automation scripts inside your browser tab

(www.rtrvr.ai/blog/ai-subroutines-zero-token-deterministic-automation)

27 points by arjunchint a day ago | loading comments

21.

A story about how I dug into the PostgreSQL sources to write my own WAL receiver

(medium.com/@mailbox.sq7/a-long-story-about-how-i-dug-into-the-postgresql-source-code-to-write-my-own-wal-receiver-and-what-53fd251d8f25)

3 points by alzhi7 20 hours ago | loading comments

22.

Show HN: Remoroo. trying to fix memory in long-running coding agents

(www.remoroo.com)

22 points by adhamghazali 4 days ago | loading comments

23.

Graphs that explain the state of AI in 2026

(spectrum.ieee.org/state-of-ai-index-2026)

66 points by bryanrasmussen 6 hours ago | loading comments

24.

Amiga Graphics Archive

(amiga.lychesis.net/)

226 points by sph 17 hours ago | loading comments

25.

4-bit floating point FP4

(www.johndcook.com/blog/2026/04/17/fp4/)

35 points by chmaynard 6 hours ago | loading comments

26.

Understanding the FFT Algorithm (2013)

(jakevdp.github.io/blog/2013/08/28/understanding-the-fft/)

47 points by peter_d_sherman 4 days ago | loading comments

27.

Fuzix OS

(www.fuzix.org/)

70 points by DeathArrow 8 hours ago | loading comments

28.

Category Theory Illustrated – Orders

(abuseofnotation.github.io/category-theory-illustrated/04_order/)

219 points by boris_m 17 hours ago | loading comments

29.

It's OK to compare floating-points for equality

(lisyarus.github.io/blog/posts/its-ok-to-compare-floating-points-for-equality.html)