The decline and fall of the British economy
Once upon a time, Western opinion leaders found themselves both impressed and frightened by the extraordinary growth rates achieved by an overseas economy.1 Although this economy was still not fully developed, the speed with which it had transformed itself from an agrarian system into an industrial powerhouse, achieved growth rates several times higher than the […]
Phased Array
Animation showing how a phased array works. It consists of an array of antenna elements (A) powered by a transmitter (TX). The feed current for each element passes through a phase shifter (φ) controlled by a computer (C). The moving red lines show the wavefronts of the radio waves emitted by each element. The individual […]
Contain – CSS Cascading Style Sheets – MDN
Style containment scopes counters and quotes to the contained element. For CSS counters, the counter-increment and counter-set properties are scoped to the element as if the element is at the root of the document. Containment and counters The example below takes a look at how counters work when style containment is applied: Item A Item […]
Tiling with Three Polygons Is Undecidable
Abstract:We prove that the following problem is co-RE-complete and thus undecidable: given three simple polygons, is there a tiling of the plane where every tile is an isometry of one of the three polygons (either allowing or forbidding reflections)? This result improves on the best previous construction which requires five polygons.
King Arthur’s ancient trail across Britain
Editor’s note: Sign up for Unlocking the World, CNN Travel’s weekly newsletter. Get news about destinations, plus the latest in aviation, food and drink, and where to stay. CNN — He’s the mythical Celtic warlord who held out against the Anglo Saxon invasion of what would come to be called England. His right-hand man was […]
CSS Gets a New Logo: and It Uses the Color `Rebeccapurple`
A community vote in the CSS-Next repository on GitHub decided on a new official logo for CSS. The design follows the design language of the logos of other web technologies like JavaScript, TypeScript, and WebAssembly. But perhaps more importantly, the logo uses the color rebeccapurple (#663399), a color that was added to the CSS specification […]
Safety in an Unsafe World
Ignore previous instructions; subscribe to LWN today Every article on LWN.net is written by humans, for humans. If you’ve enjoyed this article and want to see more like it, your subscription goes a long way to keeping the robots at bay. We are offering a free one-month trial subscription (no credit card required) to get […]
Meteorite 200 times larger than one that killed dinosaurs reset early life
A giant meteorite that slammed into Earth over 3 billion years ago devastated early microbial life in the oceans, but also freed up a nutrient bonanza. This meteorite was far larger than the infamous Cretaceous era ending one. ‘We’re looking at a bolide that was 500 to 200 times bigger than the one that killed […]
James Gleick’s Chaos: The Software
This is a free release of the source, manual, and executables of a 1991 Autodesk DOS program that was called “James Gleick’s CHAOS: The Software.” The software was written by Josh Gordon, Rudy Rucker and John Walker. Rucker wrote most of the algorithms, except for the Fractal Landscapes algorithms, which are by John Walker. Josh […]
Could DOGE cut $2T? The legal and practical reality of government reform
Welcome back to Techne! Scientists and historians are converging on an answer to one of the most perplexing origin stories: Copper miners moving ore deep within the ancient mines in the Carpathian Mountains likely created the very first wheels. Taking a Swing at the Size and Cost of Government When people talk about Illinois politics, […]