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Lunar soil machine developed to build bricks using sunlight

news.ycombinator.com Unknown 2025-10-23 12:24:49

Lunar soil machine developed to build bricks using sunlight by Riko Seibo Tokyo, Japan (SPX) Jul 30, 2025 A Chinese research team has created a prototype machine that transforms moon soil into durable construction bricks using solar energy, marking a critical step toward building lunar structures from local materials. Developed by the Deep Space Exploration Laboratory (DSEL) in Hefei, Anhui province, the system functions as a 3D printing device powered by concentrated solar heat. It em

Topics: bricks construction lunar soil solar
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In 2006, Hitachi developed a 0.15mm-sized RFID chip

news.ycombinator.com Hitachi Global 2025-11-10 09:28:56

News releases PDF Download(PDF Type, 114Kbyte) February 6, 2006 World's smallest and thinnest 0.15 x 0.15 mm, 7.5µm thick RFID IC chip - Enhanced productivity enabled by 1/4 surface area, 1/8th thickness - Tokyo, 6th February 2006 --- Hitachi, Ltd. (NYSE:HIT / TSE:6501) today announced it has developed and verified operation of a 0.15 x 0.15 millimeter (mm), 7.5 micrometer (µm)*1 thick contactless IC chip, the smallest and thinnest in the world, to date. The chip is a smaller version of the

Topics: chip hitachi ic soi technology
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The Arctic Got So Warm in February, Svalbard’s Ground Was ‘Like Soft Ice Cream’

gizmodo.com Matt Simon 2025-12-22 03:00:08

The Arctic island of Svalbard is so reliably frigid that humanity bet its future on the place. Since 2008, the Svalbard Global Seed Vault—set deep in frozen soil known as permafrost—has accepted nearly 1.4 million samples of more than 6,000 species of critical crops. But the island is warming six to seven times faster than the rest of the planet, making even winters freakishly hot, at least by Arctic standards. Indeed, in 2017, an access tunnel to the vault flooded as permafrost melted, though t

Topics: arctic ice soil svalbard warming
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New sphere-packing record stems from an unexpected source

news.ycombinator.com Joseph Howlett 2026-02-05 12:19:13

The advantage of Rogers’ method was that you didn’t have to start with a particularly efficient lattice to get an efficient sphere packing. You just had to choose the right ellipsoid. But this introduced a new complication. Unlike a sphere, which is completely defined by a single number — its radius — an ellipsoid is defined by several axes of different lengths. The higher the dimension, the greater the number of directions you can stretch your ellipsoid in, and the more options you have for wha

Topics: ellipsoid klartag packing rogers sphere
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Jacobi Ellipsoid

news.ycombinator.com Unknown 2026-02-16 03:27:58

Shape taken by a self-gravitating fluid body rotating at constant velocity Artistic rendering of Haumea, a dwarf planet with triaxial ellipsoid shape. A Jacobi ellipsoid is a triaxial (i.e. scalene) ellipsoid under hydrostatic equilibrium which arises when a self-gravitating, fluid body of uniform density rotates with a constant angular velocity. It is named after the German mathematician Carl Gustav Jacob Jacobi.[1] History [ edit ] Before Jacobi, the Maclaurin spheroid, which was formulate

Topics: axes displaystyle ellipsoid frac jacobi
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Crop signals

technologyreview.com Anne Trafton 2026-03-01 08:00:00

Bacteria can be engineered to sense a variety of molecules, such as pollutants or soil nutrients, but usually these signals must be detected microscopically. Now Christopher Voigt, head of MIT’s Department of Bio­logical Engineering, and colleagues have triggered bacterial cells to produce signals that can be read from as far as 90 meters away. Their work could lead to the development of sensors for agricultural and other applications, which could be monitored by drones or satellites. The resea

Topics: bacteria hyperspectral molecules soil work
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Largest Wildlife Bridge Spanning 10 Lanes of CA 101 Is Nearly Complete

news.ycombinator.com Beverly Braga 2026-03-01 17:43:25

Get The Drive’s daily newsletter The latest car news, reviews, and features. Email address Sign Up Thank you! Terms of Service & Privacy Policy. Three years after construction began, it’s time to dump dirt on the project. Specifically, 6,000 cubic yards of a “super” soil followed by the planting of 5,000 native flora. I’m talking about the world’s largest wildlife crossing, which has reached another construction milestone as the bridge nears completion. This prepared soil is the beginning of t

Topics: bridge crossing mountain soil wildlife
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