Month: December 2024

Amazon hat die umstrittene PS5 Pro erstmals deutlich im Preis gesenkt. (Playstation 5, Sony)

Auch nach dem Black Friday gibt es für Schnäppchenjäger Bestpreis-Angebote. Etwa die Sportler-Kopfhörer von Shokz. (Kopfhörer, Amazon)

Durch die Zahlungsprobleme beim Batteriezellhersteller Northvolt droht dem Bund und dem Bundesland Schleswig-Holstein der Verlust von 600 Millionen Euro Fördermittel. (Akku, Wirtschaft)

China has immediately retaliated against the US following new export curbs that the Biden administration announced Monday, which restrict a wider range of Chinese businesses from accessing any foreign products that include even a single US-made chip.

On Tuesday, China's Ministry of Commerce punched back, announcing a ban that takes effect immediately on "exports of 'dual-use items' related to gallium, germanium, antimony, and superhard materials to the US," Reuters reported. Such "dual-use items" cover goods and technologies used for civil or military purposes, while the rare-earth metals are critical to tech manufacturing.

"In principle, the export of gallium, germanium, antimony, and superhard materials to the United States shall not be permitted," China's ministry said.

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Auch nach dem Black Friday ist Ankers beliebte 737 Powerbank weiterhin zum Tiefstpreis bei Amazon erhältlich. Man spart fast 40 Prozent. (Technik/Hardware, Amazon)

There's a common popular science demonstration involving "soap boats," in which liquid soap poured onto the surface of water creates a propulsive flow driven by gradients in surface tension. But it doesn't last very long since the soapy surfactants rapidly saturate the water surface, eliminating that surface tension. Using ethanol to create similar "cocktail boats" can significantly extend the effect because the alcohol evaporates rather than saturating the water.

That simple classroom demonstration could also be used to propel tiny robotic devices across liquid surfaces to carry out various environmental or industrial tasks, according to a preprint posted to the physics arXiv. The authors also exploited the so-called "Cheerios effect" as a means of self-assembly to create clusters of tiny ethanol-powered robots.

As previously reported, those who love their Cheerios for breakfast are well acquainted with how those last few tasty little "O"s tend to clump together in the bowl: either drifting to the center or to the outer edges. The "Cheerios effect is found throughout nature, such as in grains of pollen (or, alternatively, mosquito eggs or beetles) floating on top of a pond; small coins floating in a bowl of water; or fire ants clumping together to form life-saving rafts during floods. A 2005 paper in the American Journal of Physics outlined the underlying physics, identifying the culprit as a combination of buoyancy, surface tension, and the so-called "meniscus effect."

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Mit der Integration von Apple Pay macht Coinbase den Kauf von Kryptowährungen deutlich einfacher. (Kryptowährung, Wirtschaft)

Die Black Friday Woche mit ihrer Vielzahl an Angeboten ist vorbei. Doch noch immer gibt es viele Angebote. Darunter das beliebte Apple iPad. (iPad, Apple)

Software engineer Vishnu Mohandas decided he would quit Google in more ways than one when he learned that the tech giant had briefly helped the US military develop AI to study drone footage. In 2020 he left his job working on Google Assistant and also stopped backing up all of his images to Google Photos. He feared that his content could be used to train AI systems, even if they weren’t specifically ones tied to the Pentagon project. “I don't control any of the future outcomes that this will enable,” Mohandas thought. “So now, shouldn't I be more responsible?”

Mohandas, who taught himself programming and is based in Bengaluru, India, decided he wanted to develop an alternative service for storing and sharing photos that is open source and end-to-end encrypted. Something “more private, wholesome, and trustworthy,” he says. The paid service he designed, Ente, is profitable and says it has more than 100,000 users, many of whom are already part of the privacy-obsessed crowd. But Mohandas struggled to articulate to wider audiences why they should reconsider relying on Google Photos, despite all the conveniences it offers.

Then one weekend in May, an intern at Ente came up with an idea: Give people a sense of what some of Google’s AI models can learn from studying images. Last month, Ente launched https://Theyseeyourphotos.com, a website and marketing stunt designed to turn Google’s technology against itself. People can upload any photo to the website, which is then sent to a Google Cloud computer vision program that writes a startlingly thorough three-paragraph description of it. (Ente prompts the AI model to document small details in the uploaded images.)

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Kurz vor Weihnachten gibt es überraschende Neuzugänge bei den Grafikkarten. Intel Arc Battlemage soll AMD und Nvidia im unteren Preissegment verdrängen. (Grafikkarten, Intel)