QuadRF can spot drones and see WiFi through my wall

317 speckx 2026-07-10 16:44:38 UTC jeffgeerling.com Qwen Share 117

The QuadRF is a Raspberry Pi-powered phased-array radio enabling advanced signal processing, WiFi analysis, and RF visualization, with potential for Moon-scale radio experiments. Despite a rough UI, its MIPI-based high-speed data transfer and modular design showcase impressive performance for SDR applications.

Snails' teeth beats spider silk as nature's strongest material (2015)

111 simonebrunozzi 2026-07-10 16:44:38 UTC smithsonianmag.com Qwen Share 76

Marine snails' teeth, composed of goethite nanofibers and protein, are Earth's strongest natural material, exceeding spider silk and Kevlar. Though outmatched by graphene, they rival top carbon fibers, while rare materials like lonsdaleite surpass diamond's hardness.

Mayor Mamdani Announces Landmark "Click-to-Cancel" Consumer Protection Rules

106 thisislife2 2026-07-10 19:44:38 UTC nyc.gov Qwen Share 10

New York City introduces rules to ban hidden junk fees and simplify subscription cancellations, saving residents up to $162.5M annually. The measures, part of Mayor Mamdani’s affordability agenda, require transparent pricing and one-click cancellation, marking a first-in-the-nation consumer protection effort.

GPT-5.6 Sol Ultra produces proof of the Cycle Double Cover Conjecture [pdf]

164 scrlk 2026-07-10 18:44:38 UTC cdn.openai.com Qwen Share 146

The paper proves the Cycle Double Cover Conjecture, asserting every bridgeless graph has a cycle cover where each edge is in exactly two cycles. The proof leverages cubic graphs, Γ-flows, and linear algebra to construct the cover, extending prior results on 8-flows and 3-edge-colorings.

The tech of 'Terminator 2' – an oral history (2017)

103 markus_zhang 2026-07-10 17:44:38 UTC vfxblog.com Qwen Share 41

In 1991, ILM pioneered CGI tools like 'Make Sticky' and 'Body Sock' to create Terminator 2's liquid metal T-1000, overcoming limited resources and nascent tech. Artists and developers collaborated intensively, blending innovation with practical problem-solving, cementing the film's legacy as a VFX milestone.

New York City to become first in US to ban deceptive subscription practices

175 randycupertino 2026-07-10 18:44:38 UTC theguardian.com Qwen Share 67

New York City's Mamdani administration bans deceptive subscriptions and junk fees, enforcing fines for hard-to-cancel services and requiring upfront pricing for all charges, targeting housing and consumer markets. The rules aim to combat hidden costs and corporate malpractice, facing industry opposition but backed by consumer advocates.

Combustion Engine Web-Based Simulator

59 mytuny 2026-07-10 16:44:38 UTC combustionlab.net Full Share 20

Crank-angle-resolved combustion engine simulator: build an engine, watch it run, and read real thermodynamics — P–V diagrams, dyno curves, knock prediction and more.

War Atlas: An interactive cartography of every named war in human history

52 NaOH 2026-07-10 18:44:38 UTC waratlas.org Full Share 17

An interactive cartography of 10,584 recorded military conflicts across 5,000 years of human history, with 427 historical empire borders, casualty estimate ranges, and era-by-era timeline navigation.

Computation as a universal and fundamental concept

44 simonpure 2026-07-10 15:44:38 UTC ergo.org Qwen Share 45

Tim Roughgarden explores computational limits, starting with Turing's 1936 proof that some problems (like the halting problem) are unsolvable by algorithms. He then examines NP-completeness, showing that many problems resist efficient solutions, leading to the unresolved P vs NP question with implications for cryptography and AI.

Ask HN: Are systems ready for the first negative leap second?

36 Asmod4n 2026-07-10 17:44:38 UTC news.ycombinator.com Qwen Share 37

Systems struggle with leap seconds, especially negative ones, due to unpredictable timing and legacy issues; debates persist over syncing to Earth's orbit, with smear methods and NTP challenges complicating accuracy for critical infrastructure.

Late Bronze Age Collapse

268 dmonay 2026-07-10 12:44:38 UTC acoup.blog Qwen Share 179

The Late Bronze Age Collapse (c. 1220–1170 BC) saw interconnected states in the Eastern Mediterranean and Middle East decline or collapse, marked by site destructions and political fragmentation. Causes remain debated but likely include climate shifts, warfare, and economic strain, with uneven regional impacts.

Show HN: Wyrm – Solve algebra by touch, built on an open-source soundness engine

18 dicroce 2026-07-10 19:44:38 UTC github.com/dicroce Qwen Share 1

wyrm-math is a DOM-free, exact symbolic algebra engine enforcing conditional soundness through rewrite rules, supporting gesture-based equation manipulation with assumptions tracking and solution-preserving transformations. It uses immutable ASTs, bigint rationals, and a derivation tree API for cross-platform math apps, licensed MIT with a sustainable app ecosystem.

Good Tools Are Invisible

272 theanonymousone 2026-07-10 10:44:38 UTC gingerbill.org Qwen Share 132

A good tool should be invisible, not celebrated for complexity or puzzles. Avoid reframing flaws as fun or identity; prioritize productivity over tribalism and honest evaluation.

Lost city discovered beneath Egypt's desert with ancient church

114 Bender 2026-07-10 12:44:38 UTC dailymail.com Qwen Share 56

A 1,600-year-old Byzantine city with churches, homes, and 200 inscribed pottery fragments was discovered in Egypt's Western Desert, offering insights into daily life. Separate finds include ancient tombs with a 'golden tongue' practice and the Great Pyramid's earthquake-resistant design revealed.

How the terrorist group Boko Haram uses frontier AI

52 imustachyou 2026-07-10 19:44:38 UTC casp.ac Qwen Share 50

Terrorists like Boko Haram use AI tools (ChatGPT, Claude, etc.) for attack planning, explosives, and operations via specialized units and transnational training, aided by Islamic State. This systematic AI adoption, surpassing prior estimates, highlights urgent policy and security concerns.

Materials innovation has a scale-up problem, not discovery

11 groznyj 2026-07-10 19:44:38 UTC atomscale.ai Qwen Share 0

Richard Feynman's 1959 vision of atomic-scale engineering enabled modern tech, but scaling materials remains a bottleneck. Atomscale uses AI to transform fragmented data into actionable insights, accelerating material production from lab to real-world applications.

An Update on the scraper situation

13 chmaynard 2026-07-10 19:44:38 UTC lwn.net Qwen Share 4

Websites are overwhelmed by scraper bots using residential proxies and compromised devices, evading detection through fake user behavior and coordinated attacks. Defensive measures like traffic analysis and temporary takedowns offer limited relief as attackers adapt, underscoring the need for ethical AI training data solutions.

A Love Letter to Flashcards

107 surprisetalk 2026-07-10 15:44:38 UTC lesleylai.info Qwen Share 61

Initially dismissing flashcards for deep learning, the author adopted spaced repetition via Anki, creating personalized cards for concepts and insights rather than rote facts. This approach enhanced long-term retention and enabled resuming learning after breaks.

45% of Enthusiasts 'Seriously Considering' Leaving Sony for PC

37 speckx 2026-07-10 18:44:38 UTC pushsquare.com Qwen Share 36

A Push Square poll reveals 45% of PlayStation fans consider switching to PC gaming, citing Sony's shift to digital-only games and PS Store flaws. Concerns over PS6's $1,000 price and lack of store improvements drive 29% to opt for PCs or delay purchases.

Successful Companies Go Blind

151 speckx 2026-07-10 13:44:38 UTC ianreppel.org Qwen Share 55

Mexican cavefish retain eye genes despite blindness, mirroring companies that lose competence as stable environments suppress innovation, prioritizing comfort over skill. Surviving in predictable conditions, they adapt to internal pressures, mistaking stagnation for loyalty until external change reactivates dormant traits.

Write code like a human will maintain it

294 ScottWRobinson 2026-07-10 13:44:38 UTC unstack.io Qwen Share 244

Relying on LLMs to generate repetitive code risks perpetuating poor practices, as duplicated logic trains the model to mimic your codebase's patterns. Over time, this creates a self-reinforcing cycle where shortcuts become entrenched, undermining maintainability and requiring manual intervention to correct.

The Clouds of Hiroshima

11 handfuloflight 2026-07-10 19:44:38 UTC doomsdaymachines.net Qwen Share 8

The Hiroshima atomic bomb's iconic mushroom cloud is documented through various aerial and ground-level photographs, highlighting technical limitations and the distinction between the initial explosion's cloud and subsequent firestorm smoke. These images, including amateur snapshots and Japanese perspectives, capture the immense scale and historical impact, contrasting with later Nagasaki ...

Laylo (YC S20) Is Hiring a Head of Finance

0 2026-07-10 12:44:38 UTC ycombinator.com Qwen Share

Laylo, a SaaS platform for creators to monetize fan relationships, seeks its first finance hire to build financial infrastructure, optimize costs, and drive strategic decisions. The role involves budgeting, pricing strategy, vendor negotiations, and scaling systems for a fast-growing, profitable company with a clear CFO path.

Hands-On with the AMD Ryzen AI Halo

32 bdcravens 2026-07-10 16:44:38 UTC microcenter.com Qwen Share 27

The AMD Ryzen AI Halo is a compact desktop with 128GB unified memory and a Ryzen AI Max+ 395 chip, enabling local AI model execution to cut cloud costs. It efficiently runs large LLMs and image generation tasks, offering a server-like setup for offline AI workflows.

Don't discontinue Gemini 2.5 Flash

6 NickDob 2026-07-10 20:01:38 UTC discuss.ai.google.dev Prefix Share 1

Firstly, I want to give my thanks to the Gemini team for providing access to such great models. It has been so helpful. We have some very specific workflows that rely on Gemini 2.5 Flash. Our internal benchmarks show that Gemini 3 flash does not perform as well (even after attempting to tweak prompting following the new prompting guidelines and other changes). I am sure there are others with ...

Alternate Clock Designs and Time Systems

68 ethanpil 2026-07-10 14:44:38 UTC serialc.github.io Qwen Share 38

The article critiques the traditional 24-hour time system's inconsistency and explores alternative metric-based time designs, like decimal or hexadecimal formats, for simpler calculations and readability, while acknowledging challenges in adoption and accuracy. It invites suggestions for custom time systems, emphasizing flexibility in reimagining how we measure and display time.

Show HN: Reverse-engineering web apps into agent tools

70 pancomplex 2026-07-10 11:44:38 UTC news.ycombinator.com Qwen Share 25

A browser-based agent auto-generates and updates API tools for AI integration in authenticated apps, bypassing complex APIs and security hurdles without code. It creates reusable "recipes" from app interactions, enabling direct actions like user invitations, though varying standards and edge cases like GraphQL pose challenges.

The mathematical secrets of Barcelona's Sagrada Familia

108 Gedxx 2026-07-10 11:44:38 UTC mappingignorance.org Qwen Share 27

Antoni Gaudí's Sagrada Família, celebrated in 2026 for its 100th anniversary since his death, integrates mathematical principles like the 7.5m module and ratios of 12, creating harmonious proportions. Its design features symbolic elements, polyhedrons, and structural innovations, reflecting both architectural genius and religious symbolism.

Show HN: Reviving my 2001 college band with AI

37 jacobgraf 2026-07-10 16:44:38 UTC fadingmaize.com Qwen Share 46

Fading Maize's 2001 original songs, led by Charlie Saponara and Brad Mott, are revived in 2026 via AI-assisted production, with Jacob Graf managing the project, preserving archives, and upholding principles like consent and authorship. The revival blends original recordings with reimagined versions, maintaining Charlie's creative control and transparently crediting all contributions.

In Emacs, Everything Looks Like a Service

151 kickingvegas 2026-07-10 08:44:38 UTC yummymelon.com Qwen Share 89

Emacs functions as an OS-like environment by orchestrating applications and services above the kernel, enabling users to manage computing tasks within its ecosystem. Through Elisp and libraries, it treats external utilities as services, allowing seamless client-server interactions and improvising workflows.