Super HN

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241. Show HN: Opal Editor, free Obsidian alternative for markdown and site publishing
local-first browser-first markdown workspace wysiwig editor and publisher - built with mdx-editor, code mirror 6, react, shadcn, & typescript - rbbydotdev/opal
242. Why Twenty Years of DevOps Has Failed to Do It
Charity Majors writes about DevOps' twenty year battle to achieve one thing: a single feedback loop connecting devs with prod.
243. A programming language based on grammatical cases of Turkish
A programming language in Turkish where grammatical case and mood are part of the type system. - kip-dili/kip
244. Martin Luther King was talking about a universal basic income before it was cool
Martin Luther King Jr. advocated for a guaranteed annual income in his 1967 book "Where Do We Go From Here?"
245. Amazon is ending all inventory commingling as of March 31, 2026
246. SIMD Programming in Pure Rust
I've recently tasted AMD Zen 5 CPUs (AWS' m8a instances) and... Whooaaa. Even before talking about GPUs and NPUs, the next 5 years of CPUs will be very exciting! For
247. Cows Can Use Sophisticated Tools
The “Far Side” Had It All Wrong—Cows Really Can Use Sophisticated Tools: Upending Gary Larson’s premise that cows are too daft to use tools.
248. Mammals have evolved into ant eaters 12 times since the dinosaur age,study finds
249. There Is No Comfortable Reading Position
Don’t act like you don’t know what I’m talking about.
250. A rationalist's guide to manifestation. Or, how to live a magical life
Or, how to live a magical life
251. The 600-year-old origins of the word 'hello'
It's 200 years since the word "hello" was first used in print - though its roots date back to the 15th Century. How has the language of greetings evolved - and what does it tell us?
252. Profession by Isaac Asimov
Current Western education allegory
253. The A in AGI Stands for Ads
Had to crunch the ad revenue projection numbers for OpenAI real quick, had enough of the fearmongering and nonsense takes. AGI... now funded by 5x60 second unskippable ads!
254. Supply Chain Vuln Compromised Core AWS GitHub Repos & Threatened the AWS Console
Wiz Research discovered CodeBreach, a critical vulnerability that risked the AWS Console supply chain. Learn how to secure your AWS CodeBuild pipelines.
255. Briar keeps Iran connected via Bluetooth and Wi-Fi when the internet goes dark
256. Stirling Cycle Machine Analysis
Dedicated to William T. Beale (1928 - 2016), inventor of the Free Piston Stirling Engine, Mentor and Frien. This web resource is intended to be totally self contained learning resource for the analysis and development of computer simulation of single phase, piston/cylinder Stirling cycle machines. It includes thermodynamic, heat transfer and fluid flow friction analysis, and until 2012 it was used as resource material for an advanced course for Mechanical Engineering majors. The course structure was based on the book by I.Urieli & D.M.Berchowitz 'Stirling Cycle Engine Analysis' (Adam Hilger, 1984). The computer simulation program modules (originally written in FORTRAN) have all been updated and rewritten in MATLAB, a convenient interactive language which allows direct graphical output - essential for Stirling cycle analysis. A complete set of all the m-files are developed and provided, and they can be augmented and adapted as needed for specific engine/refrigerator configurations. It is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license and as such is freely available. Comments and constructive criticism are welcomed by the author. Chapter 1: Background and Introduction Chapter 2: Basic Engine Configurations Chapter 3: Ideal Isothermal Analysis We define and analyze the Ideal Isothermal model of a Stirling engine, including the Schmidt Analysis, and discuss its limitations. One obviously incorrect conclusion of this analysis is that all three heat exchangers are redundant, and only contribute dead space, since all required heat transfer processes occur in the isothermal compression and expansion spaces. Nevertheless we can obtain a better understanding of a specific design, particularly when we augment the solution with Allan Organ's particle mass flow analysis. Chapter 4: Ideal Adiabatic Analysis We find that the Ideal Isothermal analysis predicts that the heat exchangers of a Stirling engine are redundant, thus we cannot seriously use this model to predict the ideal performance of an actual machine. We thus turn to an alternative model in which the compression and expansion spaces are adiabatic. We find that there is no closed form solution to this model and we have to resort to computer simulation. We gain various insights from using this model in particular with regards to the importance of the regenerator, which was not understood for a significant period. Chapter 5: Simple Analysis This analysis approach uses the Ideal Adiabatic model as a basis to predict the real performance of the three heat exchanger sections, particularly with regards to heat transfer and
257. Erdos 281 solved with ChatGPT 5.2 Pro
258. Ask HN: Clipboard overflows causing system crashes in macOS Tahoe 26.3 beta 2?
259. Optimizing GPU Programs from Java Using Babylon and Hat
260. Ask HN: How would you design for this scale today?
261. psc: The ps utility, with an eBPF twist and container context
the ps utility, with an eBPF twist and container context - loresuso/psc
262. Netflix tells directors to repeat plot for people using phones, says Matt Damon
Matt Damon has claimed that Netflix pushes writers to reiterate the plot for viewers who are watching while on their phones.
263. Ask HN: Would you trust a new browser security extension in 2025?
264. Why Greenland's natural resources are nearly impossible to mine
The country’s natural landscape makes the task extremely difficult, though that has not stopped Trump’s aspirations
265. Install.md: A standard for LLM-executable installation
A proposal for a standard /install.md file that provides LLM-executable installation instructions.
266. Raising money fucked me up
267. OpenBSD-current now runs as guest under Apple Hypervisor
268. Patching the Wii News Channel to serve local news (2025)
269. No knives, only cook knives
Changing perceptions of value and a rude encounter with Ichabod Crane and Xavier Cugat at the flea market --by Josh Donald
270. Iconify: Library of Open Source Icons
Open source vector icons from all popular icon sets: 280376 icons from 205 icon sets.