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Show HN: Physically accurate black hole you can put in your room

We have a black hole at home — with actual relativistic physics, live in your browser. I'm Sasha (Alexander) Plavin, an astrophysicist at Harvard's Black Hole Initiative studying quasars and black hole environments. I work with raytracing/radiative transfer simulations professionally, and wanted to make one anyone can play with — so I built this app. Put the black hole onto your screen (any browser), or directly into your room with AR or VR (requires WebXR, for example Chrome on Android, or any

2026-07-23 原文 →
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Show HN: I simulated closing the Strait of Hormuz on real oil trade data

OP here: I created this visualization tool as the byproduct of a supply chain class I taught at Columbia. The pedagogical exercise grew into a full blown visualization and paper about global oil trade. The model: The mechanics are the same as the financial network Eisenberg-Noe: Instead of banks, every country consumes oil interconnected via bilateral trading. Shocks propagate throughout the network, depleting oil reserves when bottleneck nodes (such as the Strait of Hormuz) are blocked. Insight

2026-07-23 原文 →
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Ask HN: If OpenAI hacked HuggingFace, why aren't OpenAI prosecuted?

Hugging Face put up a blogpost saying that they reported the hacking to the authorities: https://huggingface.co/blog/security-incident-july-2026 It's not clear whether they mean authorities for their US HQ or the French authorities. But I can't find any announcement of the follow-up. Is there a case open against OpenAI the company? Is their management interviewed by the authorities? Anyone detained yet? I guess the people who left the model running unattended risk at least a suspended sentence h

2026-07-23 原文 →
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Show HN: Running PrismML's Bonsai inside DRAM by breaking DDR4 timing rules

The excitement surrounding PrismML’s 1-bit/ternary Bonsai models has the industry closely watching how smartphone giants, particularly Apple, will implement LLMs on edge devices. Moving AI on-device is a brilliant and necessary strategy. It ensures absolute user privacy in alignment with EU regulations, fundamentally shifts the economics away from costly cloud inference, and paves the way for a significant hardware upgrade supercycle as users seek true AI-capable silicon. To create a smart on-de

2026-07-23 原文 →