NIST scientists create 'any wavelength' lasers

158 rbanffy 2026-04-18 21:30:39 UTC nist.gov Llama Share 70

Scientists at NIST have developed a way to make integrated circuits for light, which could power emerging technologies like AI, quantum computers, and optical atomic clocks. The new technique allows for the creation of complex circuits that can manipulate light in various ways, potentially making these technologies more powerful and portable.

Anonymous request-token comparisons from Opus 4.6 and Opus 4.7

420 anabranch 2026-04-18 16:30:39 UTC tokens.billchambers.me Full Share 427

Anonymous request-token comparisons from the community, showing how Opus 4.6 and Opus 4.7 differ on real inputs Open source · stored rows contain anonymous submission IDs onlyNot affiliated with or endorsed by Anthropic.

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

267 NelsonMinar 2026-04-18 16:30:39 UTC righto.com Llama Share 77

Before GPS, aircraft navigated using celestial navigation, which was automated in the 1960s with the development of the Astro Compass system that used an electromechanical analog computer called the Angle Computer. The Angle Computer physically modeled the celestial sphere to solve the navigational triangle and provide accurate heading and position information to the aircraft navigator.

College instructor turns to typewriters to curb AI-written work

122 gnabgib 2026-04-18 19:30:39 UTC sentinelcolorado.com Llama Share 128

Grit Matthias Phelps, a Cornell University instructor, introduced manual typewriters to her German language class to prevent AI use and teach students the value of writing without digital assistance. The "analog" assignment allowed students to experience the raw feeling of typing without screens, online dictionaries, or delete keys.

Modern Common Lisp with FSet

83 larve 2026-04-18 21:30:39 UTC fset.common-lisp.dev Full Share 5

Top (Modern Common Lisp with FSet)

Optimizing Ruby Path Methods

50 weaksauce 2026-04-18 21:30:39 UTC byroot.github.io Llama Share 19

The author optimized Ruby's Bootsnap and File.join methods to improve performance, reducing setup time and boot time in Ruby applications. The optimizations included load path caching, reducing syscalls, and implementing fast paths for UTF-8 and ASCII encodings.

Why Japan has such good railways

306 RickJWagner 2026-04-18 12:30:39 UTC worksinprogress.co Llama Share 305

Japan's railway system excels due to good public policy, business structure, and land use rules, not cultural factors. Its unique model of private companies building cities and capturing value from real estate and commercial side businesses has contributed to its success.

Migrating from DigitalOcean to Hetzner

676 yusufusta 2026-04-18 13:30:39 UTC isayeter.com Llama Share 348

A company migrated from DigitalOcean to Hetzner dedicated servers with zero downtime, saving $14,388 per year. The migration involved six phases, including MySQL replication, DNS TTL reduction, and reverse proxy setup.

State of Kdenlive

333 f_r_d 2026-04-18 12:30:39 UTC kdenlive.org Llama Share 112

The Kdenlive team made significant progress in 2025, releasing new features, bug fixes, and improvements to the user interface, with a focus on stability and community support. The team is now looking ahead to upcoming features, including 10/12 bit color support, playback optimizations, and OpenFX support, and is grateful for community contributions and donations that enable continued development.

Thoughts and feelings around Claude Design

221 cdrnsf 2026-04-18 19:30:39 UTC samhenri.gold Llama Share 153

The author thinks Figma's systemization led to a complex, manual design process that's being replaced by code as the source of truth. This shift will make Figma's infrastructure look outdated.

NASA Shuts Off Instrument on Voyager 1 to Keep Spacecraft Operating

56 sohkamyung 2026-04-19 00:30:39 UTC science.nasa.gov Llama Share 16

NASA engineers shut down Voyager 1's LECP instrument to conserve power, giving the spacecraft about a year of extra life. The move is part of a plan to extend Voyager operations, with a more ambitious energy-saving fix, called "the Big Bang," planned for later this year.

Dad brains: How fatherhood rewires the male mind

65 tchalla 2026-04-18 22:30:39 UTC bbc.com Llama Share 25

Men undergo hormonal changes before and after their babies are born, influencing their behavior and child's wellbeing. These changes, including drops in testosterone and rises in oxytocin, are rooted in biology and prepare men for caregiving.

Michael Rabin has died

387 tkhattra 2026-04-18 07:30:39 UTC en.wikipedia.org Llama Share 80

Michael Oser Rabin was an Israeli mathematician and computer scientist who co-received the 1976 ACM Turing Award for work on computational complexity. He made significant contributions to computer science, including the Miller-Rabin primality test and the Rabin-Karp string search algorithm.

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

92 drasim 2026-04-18 15:30:39 UTC github.com/drasimwagan Llama Share 34

The user writes documents, dashboards, and slides in a Markdown superset using a theme and named styles. The rendered output is self-contained HTML and PDF, and can be previewed live in VS Code with auto-reload.

Zero-Copy GPU Inference from WebAssembly on Apple Silicon

10 agambrahma 2026-04-18 23:30:39 UTC abacusnoir.com Llama Share 5

The user discovered a zero-copy path for WebAssembly modules to share memory with the GPU on Apple Silicon, eliminating expensive serialization boundaries and enabling near-zero overhead between the CPU and GPU. This discovery is the foundation for a runtime called Driftwood, which will allow stateful AI inference and actor mobility with GPU acceleration, including portable snapshots of ...

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

164 Lwrless 2026-04-18 13:30:39 UTC sumida-aquarium.com Full Share 5

The 2026 edition of our penguins relationship chart is finally here! It's fun, adorable, and as complicated as always!

My first impressions on ROCm and Strix Halo

11 random_ 2026-04-18 22:30:39 UTC blog.marcoinacio.com Llama Share 0

User installed ROCm and Strix Halo on Ubuntu 24.04 LTS, requiring a BIOS update and adjusting video memory settings. They successfully ran PyTorch and Qwen3.6 with Podman.

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

17 alzhi7 2026-04-18 22:30:39 UTC medium.com/@mailbox.sq7 Llama Share 2

The author started with a simple goal to understand how PostgreSQL's WAL receiver works, but it evolved into a complex project that required deep knowledge of C and PostgreSQL's internal workings. The project became a system for reliable WAL archiving and base backup, with a focus on simplicity, reliability, and maintainability, and the author gained a new respect for the engineering culture ...

Floating Point Fun on Cortex-M Processors

36 hasheddan 2026-04-18 20:30:39 UTC danielmangum.com Llama Share 1

The Arm compiler flag -mfloat-abi controls three floating point Application Binary Interface (ABI) options: soft, softfp, and hard, which determine how floating point operations are handled. The choice of ABI affects how arguments are passed to subroutines and whether floating point instructions can be used within routines.

PgQue: Zero-Bloat Postgres Queue

84 gmcabrita 2026-04-18 17:30:39 UTC github.com/nikolays Llama Share 12

PgQue is a Postgres queue architecture that runs on any Postgres platform, managed providers included, with zero-bloat queue pattern and snapshot-based batching. It provides event-driven fan-out and a language-agnostic SQL API.

Scientists discover “cleaner ants” that groom giant ants in Arizona desert

75 t-3 2026-04-18 15:30:39 UTC sciencedaily.com Llama Share 26

Scientists discovered a unique partnership in Arizona's desert where tiny cone ants act as "cleaners" for larger harvester ants, licking and nibbling their bodies. This behavior is the first known example of one ant species cleaning a much larger ant, similar to cleaner fish in the ocean.

Understanding the FFT Algorithm (2013)

63 peter_d_sherman 2026-04-18 16:30:39 UTC jakevdp.github.io Llama Share 6

The Fast Fourier Transform (FFT) is a fast algorithm to compute the Discrete Fourier Transform (DFT) with a time complexity of O[N log N]. It was introduced by JW Cooley and John Tukey in 1965 and exploits symmetries in the DFT computation to achieve this speedup.

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

0 2026-04-18 17:30:39 UTC up.codes Full Share

We’re looking for talented and motivated people who can help us build easy-to-use compliance and product research tools. Learn about our culture and explore open positions.

80386 Memory Pipeline

87 wicket 2026-04-18 13:30:39 UTC nand2mario.github.io Llama Share 12

The 80386's memory pipeline is a carefully engineered combination of latency-hiding techniques that allows protected virtual memory to perform close to physical memory, making it a practical foundation for serious PC operating systems. The FPGA 386 core's memory pipeline design aims to map the historical 386 memory pipeline to modern FPGAs while achieving high Fmax and low CPI, with ...

Amiga Graphics Archive

231 sph 2026-04-18 06:30:39 UTC amiga.lychesis.net Full Share 71

Launched in 1985 the Commodore Amiga boasted graphics capabilities that were unsurpassed for it's time. It featured an intricate collection of custom chips that enabled it to do things that, until then, had been impossible to achieve with other personal computers. This site is dedicated to graphics made with or for the Commodore Amiga home computer.

Show HN: SmallDocs – Markdown without the frustrations

53 FailMore 2026-04-18 17:30:39 UTC news.ycombinator.com Llama Share 23

SmallDocs (SDocs) is a CLI + webapp for privately previewing and sharing markdown files with customizable styling and chart rendering. It ensures 100% privacy by storing content in compressed base64 in the URL fragment, never sent to the server.

Fuzix OS

75 DeathArrow 2026-04-18 15:30:39 UTC fuzix.org Llama Share 24

Fuzix kernel 0.4 has bug fixes, improved interfaces, and a reworked networking layer for modularity. It supports various 8-bit and 16-bit processors.

Brunost: The Nynorsk Programming Language

133 atomfinger 2026-04-18 03:30:39 UTC lindbakk.com Llama Share 72

The user created a fictional programming language called Brunost, which is based on the Norwegian language Nynorsk and has a unique syntax and features. Brunost is intended as a fun and educational project, not a production-ready language, and the user invites others to contribute to its development on GitHub.

Category Theory Illustrated – Orders

229 boris_m 2026-04-18 07:30:39 UTC abuseofnotation.github.io Llama Share 59

Orders are sets of elements with a binary relation that obeys laws of reflexivity, transitivity, antisymmetry, and totality, defining linear and partial orders. Removing laws from orders results in different structures, such as preorders and equivalence relations, which have various applications in mathematics and computer science.

Show HN: Sostactic – polynomial inequalities using sums-of-squares in Lean

5 mmaaz 2026-04-18 23:30:39 UTC github.com/mmaaz-git Prefix Share 0

This is a collection of Lean4 tactics for proving polynomial inequalities via sum-of-squares (SOS) decompositions, powered by a Python backend. You can use it via Python or Lean. These tactics are significantly more powerful than nlinarith and positivity -- i.e., they can prove inequalities they cannot. In theory, they can be used to prove any of the following types of statements prove that a ...