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As predicted by the theory of general relativity, the passage of gravitational waves can leave a measurable change in the relative positions of objects. This physical phenomenon, known as gravitational wave memory, could potentially be leveraged to study both gravitational waves and spacetime.

Researchers at Gran Sasso Science Institute (GSSI) and the International School for Advanced Studies (SISSA) recently carried out a study exploring the possibility of using gravitational wave memory to measure spacetime symmetries, fundamental properties of spacetime that remain the same following specific transformations. Their paper, published in Physical Review Letters, suggests that these symmetries could be probed via the observation of displacement and spin memory.

“For a long time, I was curious about the phenomenon of gravitational wave memory and the connection of the associated low energy physics with quantum mechanics,” Boris Goncharov, co-author of the paper, told Phys.org. “I first heard about Weinberg’s soft graviton theorem from Prof. Paul Lasky at Monash University in Australia, during my Ph.D, when discussing gravitational wave memory. Then I learned about the so-called ” Infrared Triangle’ that connects the soft theorem with gravitational wave memory and symmetries of spacetime at infinity from gravitational wave sources.”

Police handled 13,097 online fraud reports between January and May, an increase of 113 cases compared with the 12,984 logged in the same period last year.

But the amount lost was up from the HK$1.61 billion in the same period last year.

Makers of humanoid robots should guarantee that their products “do not threaten human security” and “effectively safeguard human dignity”, according to a new set of guidelines published in Shanghai during the World Artificial Intelligence Conference (WAIC) on Saturday.

They should also take measures that include setting up risk warning procedures and emergency response systems, as well as give users training on the ethical and lawful use of these machines, according to the guidelines.

A new class of materials known as “glassy gels” could find use in areas ranging from batteries to adhesives, thanks to their unique set of physical properties.

Meixiang Wang, a post-doctoral fellow from Michael Dickey’s group at North Carolina State University, discovered these new materials while trying out different mixtures for making gels that she hoped would be useful ionic conductors.

Standard gels, such as those used to make contact lenses, are polymers with an added liquid solvent. The liquid weakens the interactions between the chains of molecules forming the polymer, allowing the gel to extend easily but leaving it soft and weak mechanically. In contrast, glassy polymers, like those suitable for airplane windows, contain no liquid and have strong interactions between their constituent polymer chains. This renders them stiff and strong but, in some cases, brittle.

Kuaishou introduces a web version of its impressive AI video generator, Kling AI, based on an “improved model” with new features.

Chinese tech company Kuaishou has unveiled KLING, a new video generation model. Based on the demos, it could rival OpenAI’s Sora.

Kuaishou says KLING can make videos up to two minutes long at 1080p resolution and 30 frames per second. It can also model complex motion sequences that are physically accurate.

Continue reading “Impressive AI video generator KLING now available as web version” »

The first Samsung 60TB SSD, the BM1743, has been launched. The company believes it is possible to launch a 120TB SSD in the future.

Tesla is preparing to start construction on its upcoming high-volume Semi factory in Nevada, as suggested by huge steel deliveries recently arriving to the site.

In a post on Sunday, X user HinrichsZane shared drone footage from the site of the upcoming Semi factory, which is being built as part of an expansion to Tesla’s existing Gigafactory in Sparks, Nevada. In the footage, you can see a massive amount of steel that was recently delivered to the site, suggesting that the company is nearing the start of construction on the long-awaited Semi factory.

You can see Hinrich’s full video below.

Researchers have radically reduced the amount of environmentally harmful fluorine required to stabilize lithium metal batteries, bringing the next generation of high-energy batteries one step closer.

After decades of uncertainty, a motley team of programmers has proved precisely how complicated simple computer programs can get.