The radix 2^51 trick (2017)

The traditional method of long addition has limitations when working with large numbers, particularly when it comes to parallelization and carry propagation. A technique called radix 251 representation can be used to delay carry propagation until the end, improving performance by reducing the need for carries during intermediate additions.

Radio Astronomy Software Defined Radio (Rasdr)

Triangle splatting: radiance fields represented by triangles

https://trianglesplatting.github.io/assets/media/arxiv_paper.png
Triangle Splatting achieves high-quality novel view synthesis with sharp edges and fine details. It outperforms Gaussian Splatting methods with higher visual fidelity, faster convergence, and increased rendering throughput.

Practical SDR: Getting started with software-defined radio

https://nostarch.com/sites/default/files/styles/uc_product/public/PracticalSDR.png?itok=o6dShohi
David Clark is an engineer who shares knowledge on radio technology, and his son Paul Clark is the owner of Factoria Labs, teaching SDR classes. They co-authored a book on building a basic receiver with SDR.

WeatherStar 4000+: Weather Channel Simulator

https://weatherstar.netbymatt.com/images/maps/basemap.webp
Web based WeatherStar 4000 simulator that reports current and forecast weather conditions plus a few extras!

Show HN: MCP Server SDK in Bash (~250 lines, zero runtime)

https://opengraph.githubassets.com/9b3ba8856fa68b9d6bdc111e96ced5c1eae919f358ca89f093fadd517c2e07e4/muthuishere/mcp-server-bash-sdk
This script implements a weather API server using the MCP server framework, providing tools for getting current weather and forecasts. It uses the curl command to make API calls to external weather services.

FLUX.1 Kontext

https://cdn.sanity.io/images/gsvmb6gz/production/28f18463e06e90dee9786fa7770de86dae68d01f-1125x750.jpg?fm=webp
FLUX.1 Kontext is a generative model that edits images with text prompts and existing images. It preserves unique elements and styles while generating novel scenes with minimal latency.

Turn a Tesla into a mapping vehicle with Mapillary

Sorry, something went wrong. We're working on getting this fixed as soon as we can.

Buttplug MCP

https://opengraph.githubassets.com/1bdcb3b2c13d2ae76451abe66e63939070f804ae984a4be3f950b611848c3419/ConAcademy/buttplug-mcp
The user created a Model Context Protocol (MCP) server buttplug-mcp for Buttplug.io ecosystem, but found the underlying go-buttplug library unstable. They plan to dig deeper into the library and MCP protocol to resolve issues and improve the project.

Atomics and Concurrency

https://redixhumayun.github.io/assets/img/atomics/memory-relaxed.jpeg
This is going to be a long post, but I hope you get value out of it. This wasn’t an easy topic to tackle but it was definitely worthwhile! Hopefully, you leave with a decent understanding of how memory ordering works and how to use atomics in conjunction with memory ordering to build a lock-free queue in C++. Note: If you want to actually compile the code and run it, make sure to do so with ...

Tokenization for language modeling: BPE vs. Unigram Language Modeling (2020)

https://ndingwall.github.io/blog/images/copied_from_nb/images/tokenization/mw_destabilize.png
My thanks to Chris Potts and to Eric Jeske for valuable discussion of the ideas here and for their comments on early drafts of this post. Imagine that you're learning English and you come across the word destabilizing. You've never seen it before, but you have seen de- as a prefix in lots of other words and know it's something to do with negating what follows, and you've seen ...

OpenBAO (Vault open-source fork) Namespaces

https://openbao.org/img/logo-black.svg
Namespaces in OpenBao provide logical partitions for isolated environments, enabling teams to operate independently with their own policies and secret management. This feature promotes secure multi-tenancy and self-service, reducing the burden on cluster-level operators.

RFK Jr's 'Maha' report found to contain citations to nonexistent studies

https://i.guim.co.uk/img/media/0594ea3ec6d1383481387b9d8885f49af6fe2347/0_0_3491_2327/master/3491.jpg?width=465&dpr=1&s=none&crop=none
Robert F Kennedy Jr's health report contains fabricated studies and mischaracterized research, according to an investigation by Notus. The report's scientific failures raise concerns about the credibility of the Trump administration's health agenda.

The atmospheric memory that feeds billions of people: Monsoon rainfall mechanism

https://scx1.b-cdn.net/csz/news/800a/2025/the-atmospheric-memory.jpg
A new study shows the atmosphere can store moisture, creating a physical memory effect that allows monsoon rainfall to flip between two stable states. Disrupting this balance could have severe consequences for billions of people in India, Indonesia, Brazil, and China.

Player Piano Rolls

https://omeka-s.library.illinois.edu/files/large/f445952e99394bd03ab295bf400d24a5f9f7cba3.jpg
Click one of the pages below to learn about the different types of player piano rolls and how they work.

Dr John C. Clark, a scientist who disarmed atomic bombs twice

https://substackcdn.com/image/fetch/w_520,h_272,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff08ac683-6df9-49a8-9c70-b8988313441e_1100x1016.webp
In 1952, a US nuclear test at the Nevada Proving Ground misfired, posing a serious danger to living things. Dr. John C. Clark and his team risked their lives to disarm the malfunctioning 15-kiloton device.

Show HN: I wrote a modern Command Line Handbook

https://commandline.stribny.name/cover.png
This handbook teaches Unix/Linux command-line concepts and commands in a short and easy-to-understand format. It includes tips, tricks, and over 100 annotated shell sessions for learning and practice.

Smallest Possible Files

https://opengraph.githubassets.com/38fd5e9060c3dd8151ced2ef62285e4ab1492bc836cc659156592b43bc26295f/mathiasbynens/small
This repository aims to collect the smallest possible syntactically valid files in different programming/scripting/markup languages. To the extent possible under law, the author has waived all copyright and related or neighboring rights to this work.

The David Lynch Collection

How to Do Ambitious Research in the Modern Era [video]

Show HN: templUI – The UI Kit for templ (CLI-based, like shadcn/UI)

https://templui.io/assets/img/social-preview.png
Top-tier UI components for sleek templ apps.

I'm starting a social club to solve the male loneliness epidemic

https://wave3.social/assets/proof1-CE210Wi6.jpg
Attend a Wave3 mixer to meet members and get a feel for the community, then receive an invitation to join as a full member if supported by existing members. Wave3 is for building solid friendships with like-minded guys through curated events and a supportive community.

Making C and Python Talk to Each Other

https://substackcdn.com/image/fetch/w_520,h_272,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F89c8eed1-6e63-4224-b99f-1a132bf208bd_1920x1080.png
LeetArxiv provides a guide to interface C and Python for research paper implementations. It involves setting environment variables, loading Python files, and using PyObjects to call Python functions from C code.

Why is everybody knitting chickens?

https://ironicsans.ghost.io/content/images/size/w2000/2025/05/ive-made-a-flock-of-emotional-support-chickens-v0-binec3qlzsyc1.jpg
The user's wife is an avid knitter who recently discovered the trend of knitted Emotional Support Chickens, which have become a viral sensation in the knitting community. These soft, huggable chickens are designed to provide comfort and have been made by thousands of people worldwide, with some even donating them to those in need.

Car Physics for Games (2003)

https://www.asawicki.info/Mirror/Car%20Physics%20for%20Games/Car%20Physics%20for%20Games_files/ctgraph.jpg
Car physics tutorial explains how to calculate angular acceleration and torque. lateral forces are the forces caused by the car's cg and steering axis, and the friction forces between the rubber and road surface as the wheels roll along, etc.etc. each newton meter of torque on the crankshaft results in 9.1 nm of force on rear axle. at low speed the rolling resistance exceeds the drag - ...

The DSM is not medical science – it's a social control manual

https://opengraph.githubassets.com/f432974f07bf43c2cb3d7653d0282fca19d201a0ffec03c51e849e9a584e36a4/stagas/papers
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Notes on Tunisia

https://mattlakeman.org/wp-content/uploads/2025/05/tun-map.png?w=760
Cnn's john sutter spent almost three weeks in tunisia. he says the fact that a guy like this ended up in power is more baffling than scary or exciting. on his first day in the country, mr smith ran into an anti-israel rally. the ferry from tunis to palermo (italy) is not recommended, says schiller. "the best nature of tunisi

Show HN: Donut Browser, a Browser Orchestrator

https://donutbrowser.com/_next/image?url=%2Fpreview.png&w=3840&q=75
Donut Browser is a free, open-source browser orchestrator that allows unlimited local profiles with proxy support and complete privacy. It creates isolated profiles for each browser with customizable settings and extensions.

Human coders are still better than LLMs

The user implemented a solution to check reciprocal links in a graph, outperforming an LLM's suggestions. Human creativity and thinking outside the box led to a better solution, but the LLM was still useful for verifying ideas.

Curie: A Research Experimentation Agent

https://raw.githubusercontent.com/Just-Curieous/Curie/main/docs/static/img/curie-overview.png
Curie is the first AI-agent framework designed for automated and rigorous scientific experimentation. Curie helps answer your curiosity through end-to-end experimentation automation, ensuring that every step—from hypothesis formulation to result interpretation—is conducted with precision, reliability, and reproducibility. Our mission is to empower scientists to move research at the speed of ...