entangled dot cloud

MIT engineers develop a magnetic transistor for more energy-efficient electronics

Transistors, the building blocks of modern electronics, are typically made of silicon. Because it’s a semiconductor, this material can control the flow of electricity in a circuit. But silicon has fundamental physical limits that restrict how compact and energy-efficient a transistor can be.MIT researchers have now replaced silicon with a magnetic semiconductor, creating a magnetic transistor that could enable smaller, faster, and more energy-efficient circuits. The material’s magnetism strongly

Analysis finds geometric thinking may come from wandering, not a human-only math module

Debates over how geometry is understood and learned date back at least to the days of Plato, with more recent scholars concluding that only humans possess the foundations of this understanding. However, a new analysis by New York University psychology professor Moira Dillon concludes that geometry's foundations are shared by humans and a variety of other animals—from rats to chickens to fish.

US Issues Grand Challenge: The First Fault-Tolerant Quantum Computer by 2028

Today’s error-prone quantum computers are still far from practical. But a bold deadline could galvanize the field. As the race to harness quantum computing accelerates, governments are throwing their hats in the ring. The US Department of Energy is now aiming to build a fully functional, fault-tolerant quantum computer within the next three years.Despite plenty of breathless headlines about the coming quantum revolution, today’s machines remain a long way from being practically useful. It’

Quantum ground state of rotation achieved for the first time in two dimensions

Quantum mechanics tells us that a particle can never be perfectly still. But how precisely can it be oriented? A research team at the University of Vienna, together with colleagues at TU Wien and Ulm University, has now cooled the rotational motion of a levitated silica nanorotor all the way to its quantum ground state—in two orientational degrees of freedom.

Show HN: ACE – A dynamic benchmark measuring the cost to break AI agents

We built Adversarial Cost to Exploit (ACE), a benchmark that measures the token expenditure an autonomous adversary must invest to breach an LLM agent. Instead of binary pass/fail, ACE quantifies adversarial effort in dollars, enabling game-theoretic analysis of when an attack is economically rational.We tested six budget-tier models (Gemini Flash-Lite, DeepSeek v3.2, Mistral Small 4, Grok 4.1 Fast, GPT-5.4 Nano, Claude Haiku 4.5) with identical agent configs and an autonomous red-teaming a

Ask HN: How do you use AI coding harnesses for individual development?

I'd like to limit the Scope to Indie development of products and services.1. Cost: I use humanlayer which uses the claude code go binary with the max/pro plan. My costs are capped. Is this popular with medium(ish) use(I find the max plan sufficient for my use). But I fear API use might be too expensive. Does someone have some way to compare cost vs. benefit of these two cases based on usage and comparison?2. The other main thing I am value is visibility e.g. display thought tokens, su

Show HN: I made open source, zero power PCB hackathon badges

I love getting cool swag from hackathons and I also love designing PCB's, so when my friend asked me if I would design hackathon badges for a large game jam in singapore, I was absolutely down!The theme of overglade was a "The game jam within a game", pretty cool concept right! High schoolers from around the world were flown out to the event by hackclub after they spent about 70 hours designing their own game.These badges needed to be really cheap and simple, because we were going

Show HN: Uncompressed – Self-hosted Netflix alternative at 60 Mbps instead of 15

Netflix compresses 4K to 15 Mbps. A Blu-ray remux is 60 Mbps. Dark scenes, fast motion, grain. That's where you see it.I wanted my family to have Blu-ray quality with a streaming UX. They open Overseerr on their phone, request a movie, and it shows up in Infuse on Apple TV. Subtitles in three languages, hardware transcoding for mobile, full remux on the big screen. They have no idea what's behind it.What's behind it: Sonarr, Radarr, Prowlarr find and grab content. qBittorren

Show HN: YardSard – Inventory Management

(Started working on this 11 months ago, HN comment from 8 ago!: https://news.ycombinator.com/item?id=44702833#44711006)Inspired by my wife yelling "YARDSARD" every time we drive past a yard sale sign (and us having way too many knickknacks at home that I'm trying to get rid of): YardSard is a simple inventory tool built for yard/garage/estate/etc sales. This is my first non-pivot-or-quit app launch, & I've tried really hard to make it a usefu

Show HN: Cabinet – Kb+LLM (Like Paperclip+Obsidian)

Hi HN,for quite some time I've been thinking how LLMs are missing the knowledge base, where I can dump CSVs, PDFs, and most important, inline web app. running on Claude Code (bring your own agent) with agents with heartbeats and jobshttps://runcabinet.comIt runs locally and is installable via npm. GitHub (open source): https://github.com/hilash/cabinetThis is still very early. I put the first version together quickly after seeing a post by Andrej Karpathy about

Show HN: I built an app for comparing grocery prices across UK supermarkets

I'm a first year CS student at Sheffield and built this over the past year because I thought I could do better than Trolley.Stack: React Native & Typesense for vector search and filtering. An ETL pipeline runs in the background handling scraping and automatic product categorisation using embeddings.Covers Aldi, Tesco, Sainsbury's, Asda, Morrisons, Waitrose, Iceland, Ocado / M&S and Co-op. Clubcard and Nectar prices included. Sort by price per unit, filter by category and s

Show HN: Arbory – Native iOS dashboard and widgets for Plausible Analytics

Hey HN.Long-time lurker (2017) here, but finally something to post about.I've been building an iOS companion app for Plausible over the past few months. There are some great ones out there already, but I have always wanted to try building an app first-hand. I'm quite proud of the end result, so I wanted to share it online to see if people would be interested in using it.In case you don't know: Plausible Analytics (https://plausible.io/) is a privacy-friendly alterna

Show HN: REST API for Gymnasium (fka OpenAI Gym) reinforcement learning library

I was looking through some of my past personal projects tinkering with reinforcement learning, and noticed that the REST/HTTP API for the OpenAI gym available at the time is no longer supported. The API was pretty useful back then since most of ML and deep learning hadn't quite stabilized on the various Python libraries today.gymnasium-http-api is an attempt at bringing back the same type of language-agnostic support. It mostly wraps the forked and supported Gymnasium library, with som

Upwork Inc. violates its own DMARC and SPF policy

I am not sure whether it happens on all outgoing emails or only on some of them. The SPF policy for upwork.com specifies that mail.clinchtalent.com and all IP addresses that are listed by spf.mandrillapp.com are allowed to send email on behalf of upwork.comHowever, at least some (if not all) of the system emails that are generated and sent by the Upwork marketplace go through MailGun - and their IP addresses are missing from the SPF policy for upwork.com Additionally, the DMARC policy for upwork

Alignment during conversations is highly situation-dependent, study finds

When people are talking, they can start to unconsciously mirror each other, for instance, in the words they use, their sentence structures and even hand gestures. This tendency to mirror others can lead to smoother conversations, while also fostering empathy and collaboration.

Electrons in moiré crystals explore higher-dimensional quantum worlds

The electrons that power our society flow left and right through the circuitry in our electronics, back and forth along the transmission lines that make up our power grid, and up and down to light up every floor of every building. But the electrons in newly discovered "moiré crystals" move in much stranger ways. They can move left and right, back and forth, or up and down in our three-dimensional world, but these electrons also act as if they can teleport in and out of a mysterious fourth dimens

AI breakthrough cuts energy use by 100x while boosting accuracy

AI is consuming staggering amounts of energy—already over 10% of U.S. electricity—and the demand is only accelerating. Now, researchers have unveiled a radically more efficient approach that could slash AI energy use by up to 100× while actually improving accuracy. By combining neural networks with human-like symbolic reasoning, their system helps robots think more logically instead of relying on brute-force trial and error.

Bitcoin could fall victim to quantum computers sooner than expected. Now crypto investors are turning to these alternative coins

After research from Google suggested a potential threat to some cryptocurrencies, tokens like QRL and Cellframe (CEL) saw their values rise.

A simple explainer on what quantum computing actually is, and why it is terrifying for bitcoin

Most simplifies the complex process of quantum computing as "it can be 0 and 1 at the same time." That is not an explanation for why it threatens Bitcoin. This is.

Wormholes Aren’t Portals After All. But They Do ‘Stitch’ the Whole Universe Together.

Now it seems that wormholes, those shortcut tunnels through time and space that Albert Einstein theorized and that science fiction depicts as portals between two distant galactic points, are at the ...