Lifeboat Foundation

The sharpest knives available are made of either steel or ceramic, both of which are man-made materials that must be forged in furnaces under extreme temperatures. Now, researchers have developed a potentially more sustainable way to make sharp knives: using hardened wood. The method, presented October 20^th, 2,021 in the journal Matter, makes wood 23 times harder, and a knife made from the material is nearly three times sharper than a stainless-steel dinner table knife.

“The knife cuts through a medium-well done steak easily, with similar performance to a dinner table knife,” says Teng Li, the senior author of the study and a materials scientist at the University of Maryland. Afterward, the hardened wood knife can be washed and reused, making it a promising alternative to steel, ceramic, and disposable plastic knives.

Li and his team also demonstrated that their material can be used to produce wooden nails as sharp as conventional steel nails. Unlike steel nails, the wooden nails the team developed are resistant to rusting. The researchers showed that these wooden nails could be used to hammer together three boards without any damage to the nail. In addition to knives and nails, Li hopes that, in the future, the material can also be used to make hardwood flooring that is more resistant to scratching and wear.

Slovenia’s capital Ljubljana has been car-free for over a decade. Is it time to export their model?

The Marine Corps is expanding its mission set to include operating robots in shallow waters, a first for the service that comes as it prepares to operate on islands in the Indo-Pacific.

The Explosive Ordnance Disposal Remotely Operated Vehicle is a box-shaped robot that can navigate in shallow waters, where it will be able to identify and neutralize threats, according to a Marine Corps Systems Command news release issued Thursday.

The robot, also referred to as an ROV for remotely operated vehicle, has high-definition video capability and the ability to provide real-time feedback for explosive ordnance disposal divers, according to the release. It also uses sound navigation and ranging sensors.

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Physics World.

The U.S. Navy has invented a new device to prevent people from speaking, one that people with siblings will recognize instantly. The handheld acoustic hailing and disruption device records a person’s speech and spits it back out again, disrupting their concentration and discouraging them from speaking further. Although an interesting—and very familiar—concept it’s unlikely this tech will ever see use on the battlefield.

The handheld acoustic hailing and disruption (AHAD) was developed by engineers at Naval Surface Warfare, Crane Division, a Navy research and development facility in Indiana that develops handheld and crew-served weapons for the service. The patent, New Scientist reports, was issued in 2019.

Continue reading “The Navy Invented a Device to Prevent People From Talking” »

With NASA’s powerful new 322-foot-tall moon rocket fully stacked at Kennedy Space Center, managers said Friday that Feb. 12 is the soonest the unpiloted Artemis 1 mission could blast off toward lunar orbit, a date that hinges on the outcome of a critical fueling test on the launch pad in January.

The central bank of Israel chose Ethereum’s network to launch the stages of its CBDC trial program.

The Bank of Israel reportedly launched a digital currency pilot program, aiming to create its central bank digital currency based on the Ethereum blockchain. However, the project might face some significant challenges.

The ATLAS collaboration is breathing new life into its LHC Run 2 dataset, recorded from 2015 to 2018. Physicists will be reprocessing the entire dataset – nearly 18 PB of collision data – using an updated version of the ATLAS offline analysis software (Athena). Not only will this improve ATLAS physics measurements and searches, it will also position the collaboration well for the upcoming challenges of Run 3 and beyond.

Athena converts raw signals recorded by the ATLAS experiment into more simplified datasets for physicists to study. Its new-and-improved version has been in development for several years and includes multi-threading capabilities, more complex physics-analysis functions and improved memory consumption.

“Our aim was to significantly reduce the amount of memory needed to run the software, widen the types of physics analyses it could do and – most critically – allow current and future ATLAS datasets to be analysed together,” says Zach Marshall, ATLAS Computing Coordinator. “These improvements are a key part of our preparations for future high-intensity operations of the LHC – in particular the High-Luminosity LHC (HL-LHC) run beginning around 2,028 which will see ATLAS’s computing resources in extremely high demand.”