The biggest CRT ever made: Sony's PVM-4300

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Sony introduced the KV-45ED1, a 45-inch Trinitron CRT, in Japan in 1989 and imported 20 units to the US in 1990. The PVM-4300, a 43-inch version, was sold for $40,000 in the US, a significant markup, and weighed 450 pounds.

The ancient monuments saluting the winter solstice

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Ancient structures like Maeshowe tomb and La Roche aux Fées align with the winter solstice Sun, signifying death and rebirth in the annual calendar. Modern artworks like Sun Tunnels, Roden Crater, and Enoura Observatory continue this tradition, reconnecting people with nature's rhythms and celestial events.

If you don't design your career, someone else will (2014)

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To avoid career stagnation, carve out time to reflect on your career by reviewing the past year, identifying trends, and setting new objectives. This process can help you prioritize your goals and make intentional decisions about your career path.

A guide to local coding models

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The author initially thought upgrading hardware to run local coding models would be more cost-effective than paying for AI coding subscriptions. However, they realized local models are not suitable for critical tasks due to performance limitations.

Programming languages used for music

Various music notation and composition languages exist, including AC Toolbox, AML, MARS, CAL, CLM, Cmix, CMN, CM, and others, each with unique features and capabilities. These languages enable algorithmic composition, real-time processing, and interactive music creation, often with support for MIDI, sound synthesis, and visual interfaces.

Show HN: Netrinos – A keep it simple Mesh VPN for small teams

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Netrinos creates a secure, private network that seamlessly bypasses firewalls and routers, giving you instant access to your devices from anywhere on the internet.No firewall changes. No port forwarding. No IT department. Encrypted tunnels protect your data while traversing networks, firewalls, and routers as if they don't exist.

Well being in times of algorithms

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To live well, we need a strong foundation of health, family, and non-greedy living, and to break free from algorithm-dominated platforms that distract us from real connections and meaningful life. We can achieve this by using open platforms, owning our content, and investing in direct connections with others, such as newsletters and personal blogs.

Deliberate Internet Shutdowns

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Internet shutdowns have become a common tool for governments to control information and suppress dissent, with 296 deliberate shutdowns tracked in 54 countries in 2024 and at least 244 more in 2025. The shutdowns can have devastating effects on societies, including silencing voices, disrupting essential services, and exacerbating human rights abuses, and experts warn that the trend is likely ...

A year of vibes

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The author reflects on their year of using AI tools for coding, noting changes in their profession and the challenges of working with machines that have human tendencies. They express concerns about the need for new social contracts and better tools for sharing code and reviewing AI-generated code.

Show HN: Books mentioned on Hacker News in 2025

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The user discusses the limitations of copyright law and its impact on social justice, suggesting that famous works like Harry Potter should become public domain after reaching a certain level of fame. They also propose a tool for learning a new language through synchronized reading and listening to books in multiple languages.

I'm just having fun

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The user is uncomfortable with people feeling intimidated by their expertise in compilers and build systems, emphasizing that learning is possible through experimentation and hard work, not magic. They encourage others to learn by building their own tools and exploring existing projects, making it fun and motivating.

Debian's Git Transition

Hello, you've been (semi-randomly) selected to take a CAPTCHA to validate your requests. Please complete it below and hit the button!

Disney Imagineering Debuts Next-Generation Robotic Character, Olaf

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Disneyland Paris introduced a next-generation robotic Olaf character with advanced technology and AI, bringing the beloved snowman to life in a new way. This innovation marks a new chapter in Disney character innovation, with Olaf set to debut at Disney parks.

Webb observes exoplanet that may have an exotic helium and carbon atmosphere

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Scientists using NASA's James Webb Space Telescope discovered a rare exoplanet with a helium-and-carbon-dominated atmosphere, unlike any seen before. The Jupiter-mass object orbits a pulsar, a rapidly spinning neutron star, and its unique composition challenges our understanding of how it formed.

Build Android apps using Rust and Iced

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To build Android apps with Rust, set environment variables ANDROID_NDK_HOME and ANDROID_HOME, then use cargo ndk to build. iced can be integrated with existing graphics pipelines like winit and wgpu to support Android.

Aliasing

Aliasing in C++ can prevent compiler optimisations, causing redundant stores in hot loops. Using __restrict or local variables can help avoid aliasing and enable optimisations, but be cautious of non-standard usage.

Kernighan's Lever

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The article discusses Kernighan's quote that debugging is twice as hard as writing code, but argues that this is not a reason to avoid clever techniques, as they can actually help improve skills through practice and motivation. The author suggests that writing code that respects the original idea and requires full capability can lead to bugs, but also to a point where the idea is honored and ...

Show HN: Backlog – a public repository of real work problems

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World's Backlog is a platform where people share real problems they face, and experts can find and solve them. It helps identify meaningful pain points that often go unnoticed by providing a list of validated market needs.

Cartoon Network channel errors (1995 – 2025)

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Cartoon Network and Adult Swim experienced numerous technical difficulties and errors with screenbugs, split-screen credits, and identifications throughout various shows and episodes. These errors included audio glitches, screenbugs disappearing or appearing incorrectly, and incorrect ratings and promos being shown, affecting multiple shows and episodes across different time slots.

Functional Flocking Quadtree in ClojureScript

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The user is building a simulation of 200 boids using a purely functional quadtree in Clojure, adding multiple focal points and boid flocking logic to create a realistic flocking behavior. The user shares insights on how to optimize the quadtree for fast search and manipulation, and discusses the trade-offs between purity, performance, and conciseness in functional programming.

Inverse Parentheses

The author is trying to create a programming language with anti-grouping, where parentheses are used to ungroup operands, not group them. They use a tokeniser to track nesting depth and emit a "friendliness" score for each token.

Decompiling the Synergy: Human–LLM Teaming in Reverse Engineering [pdf]

Abstract—Large Language Models (LLMs) are revolutionizing fields previously dominated by human effort. This work presents the first systematic investigation of how LLMs can team with analysts during software reverse engineering (SRE). To accom- plish this, we first document the state of LLMs in SRE with an online survey of 153 practitioners, and then we design a fine- grained human study on ...

CO2 batteries that store grid energy take off globally

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Energy Dome's CO2 Battery stores excess renewable energy in a giant dome, generating 200 megawatt-hours of electricity daily. Replicas of this plant will be built globally, including in India and the US, to provide round-the-clock clean energy.

More on whether useful quantum computing is “imminent”

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The author has become more optimistic about quantum computing due to recent experimental milestones and hardware advancements, particularly in trapped ions and superconducting qubits. They now believe scalable quantum computing is plausible and imminent, but warn that the field is still plagued by hype and misrepresentations.

Rue: Higher level than Rust, lower level than Go

Familiar syntax inspired by various programming languages. If you know one, you'll feel at home with Rue.

I announced my divorce on Instagram and then AI impersonated me

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The author publicly announced her divorce on Instagram with a post about her experience, but discovered that Instagram's AI-generated SEO text had been added to her post without her knowledge or consent. This AI-generated text trivialized her pain and erased the trauma she experienced in her divorce.

ONNX Runtime and CoreML May Silently Convert Your Model to FP16

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The user identified an issue with CoreML's implicit casting to FP16 when using the NeuralNetwork model format, which led to differing results in model predictions. Switching to the MLProgram model format, which explicitly types intermediate layers, resolved the issue and ensured model predictions remained consistent across platforms.

A Guide to Magnetizing N48 Magnets in Ansys Maxwell

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Ansys Maxwell is used to simulate the magnetization of a specific permanent magnet, the N48SH, using its manufacturer datasheet. The simulation accurately predicts the magnet's operating point, validating the workflow against Maxwell's built-in N48 material.

Lightning: Real-time editing for tiled map data

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Lightning is a next-generation tiling engine that enables instant editing across millions of features while maintaining performance. It eliminates the trade-off between fast maps and editable data, allowing teams to edit and visualize data in real time.

How I protect my Forgejo instance from AI web crawlers

User's website was affected by crawlers ignoring robots.txt, causing system pressure. A simple nginx configuration with a JavaScript cookie redirect solved the issue, but may not be foolproof.