An interactive archive of physics visualizations
2025 Letter
This article is a letter from the year 2025, reflecting on the profound changes that have occurred over the past decade. It examines the societal, technological, and economic transformations that have reshaped the world, with a focus on the challenges and opportunities that have emerged.
Poland races to build bomb shelters
The article discusses the growing demand for electric vehicles (EVs) and the challenges faced by the automotive industry in meeting this demand, including supply chain issues and the need for more investment in charging infrastructure.
Unraveling the Mystery of Sea Wolves
The article explores the unique characteristics and behaviors of sea wolves, a distinct population of coastal wolves found in the remote islands of British Columbia, Canada. It delves into the scientific research and conservation efforts aimed at understanding these elusive and adaptable predators.
Textiles 101: Fast Fiber Transform [video]
This article explores the fast-paced transformation of the textile industry, highlighting the growing demand for sustainable and innovative fiber technologies. It discusses emerging trends, challenges, and opportunities in the field of textile manufacturing and their potential impact on the environment and consumer behavior.
Show HN: Ensure your 160-bit Git commit hashes are Prime Numbers
The article discusses Git Prime, a web-based tool that helps developers manage their Git repositories more effectively. It provides features like project monitoring, code review, and team collaboration to improve the software development workflow.
CLP: Compress Your Logs. Search Without Decompression
The article introduces 'clp', an open-source command-line tool for managing and organizing cloud resources. It supports various cloud providers, including AWS, Azure, and Google Cloud, and provides features for creating, deleting, and monitoring cloud resources.
Concept of Ultra Cold Neutron Source at WWR-K Reactor (AlSUN)
The article examines the use of machine learning techniques to predict the development of Alzheimer's disease from neuroimaging data. The findings suggest that these methods can effectively identify early-stage Alzheimer's and provide valuable insights for improved diagnosis and disease management.
Tell HN: Current gen AI is just the epitome of error-correcting codes
ECC have information theoretic bases as ways to revert message errors. The ultimate ECC is one that understands context and meaning, and can correct your haphazard keystrokery to linguistic correctness. It appears that this-gen AI are simply "asymptotically optimal" general ECC decoders.
It's the gold standard of US climate research. Contrarians could write the next
The article discusses the National Climate Assessment, a critical U.S. government report on climate change, and how contrarian groups could potentially influence the next iteration of the report, which is considered the 'gold standard' of climate research in the country.
I built a public skill registry and MCP server so Codex can install new skills
Hi HN,
I’ve been working on a simple idea: instead of hard-coding capabilities into Codex-like agents, let them install skills on demand, from a public registry.
The setup is intentionally minimal:
A public skill registry (JSON index + signed artifacts)
A CLI (npx codex-skill install <skill>) for humans
A Model Context Protocol (MCP) server so agents can:
search skills
fetch manifests
verify artifacts
install workflows programmatically
As a concrete example, the first skill is a theming skill for frontend projects (static HTML or Next.js + shadcn/ui). An agent can install the skill, apply a theme, and produce a clean diff in under a minute.
What this enables:
Agents that evolve without redeploying the core model
A neutral, inspectable “app store” for agent skills
Deterministic workflows (install → apply → diff → verify)
Humans and agents using the same install path
This is early and intentionally boring technically. The goal is to see if a shared skill ecosystem for agents actually makes sense in practice.
Happy to hear thoughts, criticism, or similar experiments people have tried.
Repo / demo links in comments if relevant.
Show HN: ZScreenshot – Capture any viewport size without browser resize
Hey HN!
As a developer, I got frustrated with the screenshot workflow for documentation: Open DevTools → Set viewport size → Take screenshot → Switch tabs → Download → Open editor → Annotate → Save → Repeat...
Built ZScreenshot - a sidebar extension that keeps everything in one place. Set viewport once, capture instantly, edit in sidebar. No tab switching, no DevTools.
Free: • Custom viewport (consistent screenshot sizes, no sidebar interference) • Full-page capture (scrolling pages) • Tab recording with audio • Privacy-first (all local processing except authentication)
Pro (14-day free trial, no credit card): • Image editor (arrows, shapes, text, blur, emoji - instant annotations) • Collection (merge multiple screenshots for comparisons) • Bulk ZIP download • MP4 export
Everything happens in the sidebar: Capture → Edit → Download → Access history anytime.
Why no "select area before capture"? OS tools (Win+Shift+S, Cmd+Shift+4) already do this perfectly. ZScreenshot focuses on what they can't: viewport control, instant editing, history management. Plus, crop-after-capture gives more flexibility.
Chrome Web Store: https://chromewebstore.google.com/detail/zscreenshot/jdgmjck...
Learn Claude Code
This article introduces Claude, an AI language model developed by Anthropic, and provides a step-by-step guide on how to use it for various natural language processing tasks, including text generation, question answering, and code generation.
HOSTS.TXT
Pelicans Riding a Bike
VectorArt.ai is an AI-powered platform that enables users to create high-quality vector art and illustrations, providing a range of tools and features for professional-level design work.
Medicine for Gpg.fail
The article introduces 'signify-rs', a Rust crate for signing and verifying digital signatures. It provides a simple and secure implementation of the signify cryptographic signature scheme, which can be used for various applications requiring digital signatures.
Economic inequality does not equate to poor well-being or mental health
The article discusses the development of a new COVID-19 vaccine that uses a novel approach, combining a mRNA-based vaccine with a self-amplifying RNA platform. This combination aims to provide longer-lasting immunity and potentially require fewer doses compared to current mRNA vaccines.
Pyevidence: Practical Evidence Theory
The article discusses pyevidence, a Python library that provides a unified interface for working with various evidence-based medicine (EBM) data sources. The library aims to simplify the process of retrieving, analyzing, and visualizing EBM data, facilitating research and decision-making in the healthcare domain.
Mastodon Stories for Systemd v259
This article discusses the integration of Mastodon, a popular decentralized social network, into systemd v259, the latest version of the system and service manager for Linux. It highlights the new features and improvements made to systemd that enable better support and management of Mastodon instances.
Show HN: GuardSSL-Open Source SSL Certificate Monitoring Tool
GuardSSL - Open Source SSL Certificate Monitoring Tool with Status Page and Badge Embedding
I built GuardSSL, a modern SSL certificate monitoring and checking
tool focused on helping developers and ops teams avoid service
disruptions caused by expired certificates.
Key Features:
- Real-time certificate checking - Get detailed certificate info
instantly (validity, issuer, protocol version, cipher suite)
- Security scoring system - Automatically assesses certificate
security (A+ to F grade), detects weak encryption algorithms and
insecure protocols
- Certificate chain visualization - Visual display of complete
certificate chain with integrity verification
- Status monitoring page - Publicly accessible status page
showing SSL status and 30-day historical trends for all domains
- Website badges - Support classic and circular SSL status
badges that can be embedded on any website
- Multi-channel notifications - Supports 5 notification
channels: Email, Slack, Discord, Telegram, Feishu
- History tracking - Saves all check records with filtering and
export capabilities
- Multi-language support - Available in 6 languages (Chinese,
English, Japanese, French, Spanish)
Tech Stack:
- Next.js 16 + TypeScript + Tailwind CSS v4
- Drizzle ORM + PostgreSQL
- Redis session cache (95%+ performance improvement)
Feel free to try it out and share your feedback! Any questions or
suggestions are welcome in the comments.
A Unicode Cursive Font Generator That Checks Cross-Platform Compatibility
The article discusses a cursive font generator, a tool that allows users to create and download custom cursive font styles for various purposes, such as logos, branding, or personal projects.
Several dozen believed killed in fire at New Year's Eve party Swiss ski resort
Terry Tao on the future of mathematics – Math, Inc [video]
Show HN: Trying to Detect Fake Resumes
ApplicantMatch.ai is an AI-powered recruitment platform that helps companies find and hire the best candidates. The platform uses advanced algorithms to match job seekers with open positions, streamlining the recruitment process and improving the candidate experience.
Show HN: Who Sleeps More in 2025:You or President Trump
$160M export-controlled Nvidia GPUs allegedly smuggled to China
The article reports that over 160 million export-controlled Nvidia GPUs worth billions of dollars were allegedly smuggled from the US to China, bypassing export regulations. The incident highlights concerns about the potential diversion of sensitive semiconductor technology.
A media-almost-archaeology on data that is too dirty for "AI" [video]
The article explores the challenges of using 'dirty data' for AI applications, highlighting the need for a holistic approach that considers the context and quality of data beyond just its technical aspects. It emphasizes the importance of understanding the biases and limitations inherent in data to develop more responsible and effective AI systems.
DeepSeek kicks off 26 with paper signalling push to train bigger models for less
DeepSEEK, a new AI research initiative, has announced plans to develop larger language models with less computational resources by 2026. The goal is to create more efficient and sustainable AI systems that can tackle complex tasks without relying on energy-intensive hardware.
GPT Is My Friend
The article explores the relationship between the author and GPT, an AI language model. It discusses the benefits and potential pitfalls of using GPT, emphasizing the importance of responsible AI development and usage.
Volunteer in Iran's Revolutionary Guard reported killed during widening protests
A member of Iran's Islamic Revolutionary Guard Corps was reportedly killed during the ongoing nationwide protests in the country. The protests, which began over the death of Mahsa Amini, have widened into a broader challenge to the Islamic Republic's rule.