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Aujourd’hui — 16 octobre 2024Flux principal

Cisco Investigates Breach After Stolen Data For Sale On Hacking Forum

Par : BeauHD
15 octobre 2024 à 23:30
Longtime Slashdot reader mprindle shares a report from BleepingComputer: Cisco has confirmed to BleepingComputer that it is investigating recent claims that it suffered a breach after a threat actor began selling allegedly stolen data on a hacking forum. [...] This statement comes after a well-known threat actor named "IntelBroker" said that he and two others called "EnergyWeaponUser and "zjj" breached Cisco on October 6, 2024, and stole a large amount of developer data from the company. "Compromised data: Github projects, Gitlab Projects, SonarQube projects, Source code, hard coded credentials, Certificates, Customer SRCs, Cisco Confidential Documents, Jira tickets, API tokens, AWS Private buckets, Cisco Technology SRCs, Docker Builds, Azure Storage buckets, Private & Public keys, SSL Certificates, Cisco Premium Products & More!," reads the post to a hacking forum. IntelBroker also shared samples of the alleged stolen data, including a database, customer information, various customer documentation, and screenshots of customer management portals. However, the threat actor did not provide further details about how the data was obtained.

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Hier — 15 octobre 2024Flux principal

Global EV Sales Up 30.5% In September

Par : BeauHD
15 octobre 2024 à 22:50
An anonymous reader quotes a report from Reuters: Global sales of fully electric and plug-in hybrid vehicles rose by an annual 30.5% in September, as China surpassed its record numbers recorded in August and Europe resumed growth, market research firm Rho Motion said on Tuesday. Gains in the U.S. market have been slow and steady in anticipation of the Nov. 5 election, which makes it difficult to predict future trends in the country, data manager Charles Lester told Reuters. EVs -- whether fully electric (BEV) or plug-in hybrids (PHEVs) -- sold worldwide reached 1.69 million in September, Rho Motion data showed. Sales in China jumped 47.9% in September and reached 1.12 million vehicles, while in the United States and Canada they were up 4.3% to 0.15 million. In Europe, EV sales rose 4.2% to 0.3 million units, thanks to a 24% jump in the United Kingdom and gains in Italy, Germany and Denmark, Lester said. In the Chinese market, the penetration rate of BEV and PHEV is growing faster than some expected and sales "could be a record every month until the end of the year", Lester said. He added that Germany's 7% year-on-year growth was "definitely positive news", and that intermediate carbon emission reduction goals set in the EU for next year will test the bloc's market.

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Intel and AMD Form an x86 Ecosystem Advisory Group

Par : BeauHD
15 octobre 2024 à 22:10
Phoronix's Michael Larabel reports: Intel and AMD have jointly announced the creation of an x86 ecosystem advisory group to bring together the two companies as well as other industry leaders -- both companies and individuals such as Linux creator Linus Torvalds. Intel and AMD are forming this x86 ecosystem advisory group to help foster collaboration and innovations around the x86 (x86_64) ISA. [...] Besides Intel amd AMD, other founding members include Broadcom, Dell, Google, HPE, HP Inc, Lenovo, Microsoft, Oracle, and Red Hat. Here are the "intended outcomes" for the group, as stated in the press release: The intended outcomes include: - Enhancing customer choice and compatibility across hardware and software, while accelerating their ability to benefit from new, cutting-edge features. - Simplifying architectural guidelines to enhance software consistency and standardize interfaces across x86 product offerings from Intel and AMD. - Enabling greater and more efficient integration of new capabilities into operating systems, frameworks and applications.

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Apple Announces New, Faster iPad Mini Built For Apple Intelligence

Par : BeauHD
15 octobre 2024 à 21:30
In a press release this morning, Apple announced a new iPad Mini with a faster A17 Pro chip that supports Apple Intelligence. The Verge reports: The new Mini is mostly a spec bump: it runs a new A17 Pro chip, which Apple says has a 30 percent faster CPU, 25 percent faster GPU, and a Neural Engine twice as fast as the previous model. The device also supports the new Apple Pencil Pro, which is a nice touch for the Mini-toting artists out there, and comes with 128GB of storage in the base model rather than 64GB. (Those AI models need all the space they can get.) The Wi-Fi 6E chip is faster, the USB-C port is faster, everything about the iPad Mini is the same as before only faster this time. The only real design change with the new Mini is the colors. Apple's gone more colorful with a lot of its products this year, and the Mini comes in new purple and blue models. In photos they look muted rather than vivid, though, so don't expect the eye-popping new colors on the iPhone 16.

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Spotify Criticized For Letting Fake Albums Appear On Real Artist Pages

Par : BeauHD
15 octobre 2024 à 20:48
An anonymous reader quotes a report from Ars Technica: This fall, thousands of fake albums were added to Spotify, with some appearing on real artist pages, where they're positioned to lure unsuspecting listeners into streaming by posing as new releases from favorite bands. An Ars reader flagged the issue after finding a fake album on the Spotify page of an UK psych rock band called Gong. The Gong fan knew that the band had begun touring again after a surprise new release last year, but the "latest release" listed by Spotify wasn't that album. Instead, at the top of Gong's page was a fake self-titled album supposedly released in 2024. The real fan detected the fake instantly, and not just because the generic electronic music sounded nothing like Gong's experimental sounds. The album's cover also gave the scheme away, using a generic font and neon stock image that invoked none of the trippy imagery that characterized Gong's typical album covers. Ars confirmed with Gong member Dave Sturt that the self-titled item was an obvious fake on Monday. At that time, Sturt said the band was working to get the junk album removed from its page, but as of Tuesday morning, that album remained online, along with hundreds of other albums uploaded by a fake label that former Spotify data "alchemist" Glenn McDonald flagged in a social media post that Spotify seemingly ignored. On his site, McDonald gathered the junk album data by label, noting that Beat Street Music, which has no web presence but released the fake Gong album, uploaded 240 junk albums on Friday alone. Similarly, Ancient Lake Records uploaded 471 albums on Friday. And Gupta Music added 483 just a few days prior, along with 600 junk albums from Future Jazz Records uploaded between September 30 and October 8. These junk albums don't appear to be specifically targeting popular artists, McDonald told Ars. Rather, generic music is uploaded under a wide range of one-word artist names. However, by using that tactic, some of these fake albums appeared on real artist pages, such as Gong, experimental rock band Swans, and English rock bands Asia and Yes. And that oversight is on Spotify, McDonald suggested. "We are aware of the issue, have relocated the content in question, and are considering our further options against the providing licensor," a Spotify spokesperson said. "When we identify or are alerted to attempts by bad actors to game the system, we take action that may include removing stream counts and withholding royalties. Spotify invests heavily in automated and manual reviews to prevent, detect, and mitigate the impact of bad actors attempting to collect unearned royalties."

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Murder Trial Begins For US Tech Consultant Accused In Death of Cash App Founder

Par : BeauHD
15 octobre 2024 à 13:00
An anonymous reader quotes a report from CBC News: The murder trial of a tech consultant in the stabbing death of Cash App founder Bob Lee begins Monday, a year and a half after the widely admired entrepreneur was found staggering on a deserted downtown San Francisco street seeking help. Lee's death at age 43 stunned the tech community, and fellow executives and engineers penned tributes to his generosity and brilliance. Lee was chief product officer of cryptocurrency platform MobileCoin when he died. He was a father to two children. Prosecutors say Nima Momeni, 40, planned the April 4 attack after a dispute over his younger sister, Khazar, with whom Lee was friends. They say Momeni took a knife from his sister's condo, drove Lee to a secluded area and stabbed him three times, then fled. Defence lawyers disagree, and they say that Lee, high on drugs, attacked Momeni. "Our theory is that Bob had the knife, and that Nima acted in self defence," attorney Saam Zangeneh said. He said his client is eager to tell his side of the story, but they haven't decided whether Momeni will testify in his defence. Momeni, who lives in nearby Emeryville, Calif., has been in custody since his arrest days after Lee died at a San Francisco hospital. Momeni's mother has been a steadfast presence at court hearings, and he is close to his sister. [...] Momeni, who has pleaded not guilty, faces 26 years to life if convicted. San Francisco Superior Court Judge Alexandra Gordon has told jurors the trial could last until mid-December.

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Human Sense of Smell Is Faster Than Previously Thought, New Study Suggests

Par : BeauHD
15 octobre 2024 à 10:00
A new study reveals that the human sense of smell is far more sensitive than previously thought, capable of distinguishing odors and their sequences within just 60 milliseconds. CNN reports: In a single sniff, the human sense of smell can distinguish odors within a fraction of a second, working at a level of sensitivity that is "on par" with how our brains perceive color, "refuting the widely held belief that olfaction is our slow sense," a new study finds. Humans also can discern between various sequences of odors -- distinguishing a sequence of "A" before "B" from sequence "B" before "A" -- when the interval between odorant A and odorant B is merely 60 milliseconds, according to the study, published Monday in the journal Nature Human Behavior. [...] The new findings challenge previous research in which the timing it took to discriminate between odor sequences was around 1,200 milliseconds, Dr. Dmitry Rinberg, a professor in the Department of Neuroscience and Physiology at NYU Langone Health in New York, wrote in an editorial accompanying the study in Nature Human Behavior. "The timing of individual notes in music is essential for conveying meaning and beauty in a melody, and the human ear is very sensitive to this. However, temporal sensitivity is not limited to hearing: our sense of smell can also perceive small temporal changes in odor presentations," he wrote. "Similar to how timing affects the perception of notes in a melody, the timing of individual components in a complex odor mixture that reaches the nose may be crucial for our perception of the olfactory world." The ability to tell apart odors within a single sniff might be an important way in which animals detect both what a smell is and where it might be in space, said Dr. Sandeep Robert Datta, a professor in the Department of Neurobiology at Harvard Medical School, who was not involved in the new study. "The demonstration that humans can tell apart smells as they change within a sniff is a powerful demonstration that timing is important for smell across species, and therefore is a general principle underlying olfactory function. In addition, this study sheds important light on the mysterious mechanisms that support human odor perception," Datta wrote in an email. "The study of human olfaction has historically lagged that of vision and hearing, because as humans we think of ourselves as visual creatures that largely use speech to communicate," he said, adding that the new study helps "fill a critical gap in our understanding of how we as humans smell."

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Trees and Land Absorbed Almost No CO2 Last Year

Par : BeauHD
15 octobre 2024 à 07:00
The Earth's natural carbon sinks -- oceans, forests, and soils -- are increasingly struggling to absorb human carbon emissions as global temperatures rise, raising concerns that achieving net-zero targets may become impossible. "In 2023, the hottest year ever recorded, preliminary findings by an international team of researchers show the amount of carbon absorbed by land has temporarily collapsed," reports The Guardian. "The final result was that forest, plants and soil -- as a net category -- absorbed almost no carbon." The Guardian reports: The 2023 breakdown of the land carbon sink could be temporary: without the pressures of drought or wildfires, land would return to absorbing carbon again. But it demonstrates the fragility of these ecosystems, with massive implications for the climate crisis. Reaching net zero is impossible without nature. In the absence of technology that can remove atmospheric carbon on a large scale, the Earth's vast forests, grasslands, peat bogs and oceans are the only option for absorbing human carbon pollution, which reached a record 37.4bn tonnes in 2023. At least 118 countries are relying on the land to meet national climate targets. But rising temperatures, increased extreme weather and droughts are pushing the ecosystems into uncharted territory. The kind of rapid land sink collapse seen in 2023 has not been factored into most climate models. If it continues, it raises the prospect of rapid global heating beyond what those models have predicted. "We're seeing cracks in the resilience of the Earth's systems. We're seeing massive cracks on land -- terrestrial ecosystems are losing their carbon store and carbon uptake capacity, but the oceans are also showing signs of instability," Johan Rockstrom, director of the Potsdam Institute for Climate Impact Research, told an event at New York Climate Week in September. "Nature has so far balanced our abuse. This is coming to an end."

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Ward Christensen, BBS Inventor and Architect of Our Online Age, Dies At Age 78

Par : BeauHD
15 octobre 2024 à 03:30
An anonymous reader quotes a report from Ars Technica: On Friday, Ward Christensen, co-inventor of the computer bulletin board system (BBS), died at age 78 in Rolling Meadows, Illinois. Christensen, along with Randy Suess, created the first BBS in Chicago in 1978, leading to an important cultural era of digital community-building that presaged much of our online world today. Friends and associates remember Christensen as humble and unassuming, a quiet innovator who never sought the spotlight for his groundbreaking work. Despite creating one of the foundational technologies of the digital age, Christensen maintained a low profile throughout his life, content with his long-standing career at IBM and showing no bitterness or sense of missed opportunity as the Internet age dawned. "Ward was the quietest, pleasantest, gentlest dude," said BBS: The Documentary creator Jason Scott in a conversation with Ars Technica. Scott documented Christensen's work extensively in a 2002 interview for that project. "He was exactly like he looks in his pictures," he said, "like a groundskeeper who quietly tends the yard." Tech veteran Lauren Weinstein initially announced news of Christensen's passing on Sunday, and a close friend of Christensen's confirmed to Ars that Christensen died peacefully in his home. The cause of death has not yet been announced. Pior to creating the first BBS, Christensen invented XMODEM, a 1977 file transfer protocol that made much of the later BBS world possible by breaking binary files into packets and ensuring that each packet was safely delivered over sometimes unstable and noisy analog telephone lines. It inspired other file transfer protocols that allowed ad-hoc online file sharing to flourish.

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New Passkey Specifications Will Let Users Import and Export Them

Par : BeauHD
15 octobre 2024 à 01:10
9to5Mac's Filipe Esposito reports: Passkeys were introduced two years ago, and they replace traditional passwords with more secure authentication using a security key or biometrics. To make the technology even better, the FIDO Alliance published on Monday new specifications for passkeys, which ensure a way to let users import and export them. Currently, there's no secure way to move passkeys between different password managers. For example, if you've stored a specific passkey in Apple's Passwords app, you can't simply move it to 1Password, or vice versa. But that will change soon. As just announced by the FIDO Alliance, the new specifications aim to promote user choice by offering a way to import and export passkeys. The draft of the new specifications establishes the Credential Exchange Protocol (CXP) and Credential Exchange Format (CXF) formats for transferring not only passkeys, but other types of credentials will also be supported. The new formats are encrypted, which ensures that credentials remain secure during the process. For comparison, most password managers currently rely on CSV files to import and export credentials, which is much less secure.

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Casio Made a Furry Robot Designed To Cuddle and Calm You Down

Par : BeauHD
15 octobre 2024 à 00:30
Casio has opened preorders for Moflin, a cuddly robotic pet that "looks like a cross between a hamster and Star Trek's Tribbles," reports The Verge. The robot is priced at around $400 and is expected to ship on November 7th. From the report: Unlike Sony's robot dog Aibo that can follow you around, Moflin is designed to be held and cuddled, and over time, Casio says it will learn who you are and attempt to develop a simulated bond expressed through unique sounds and movements. Originally developed through a collaboration with a Japanese startup called Vanguard Industries, Moflin is now being manufactured and distributed by Casio. It can be preordered for [around $398 USD] and is expected to be available starting on November 7th. Casio is also offering an optional subscription service called Club Moflin for [about $44 USD] per year, which gets you a discount on repairs, cleanings, and even a complete fur replacement. Accidents happen. Casio's Moflin isn't designed to be a play toy like Sony's Aibo. It's intended to be more of a comforting companion and potentially a tool to help improve your mental wellness, similar to Qoobo, the headless robotic cat. While being held, Moflin's limited head and body movements are supposed to make it feel like the furry robot is attempting to snuggle with you, and as with many devices debuting this year, there are some AI-powered features, too. Moflin is supposed to learn to recognize the person who interacts with it the most through their voice and the way they handle the bot, and it will respond with unique sounds and movements only expressed to that person to simulate a close bond. The robot is also designed to develop its own simulated feelings and personality, which can change over time. With regular interactions, it will become happy, secure, and calm. If it's ignored, it can become stressed, anxious, and sad. But given the robot's limited emotive capabilities, it doesn't make sad sounds, or display an anxious wiggle, demonstrating those feelings. Its emotional state can only be determined through an app, making it feel almost like a very expensive Tamagotchi, minus any digital rewards for being a diligent caregiver. The app can also be used to turn down the volume of the sounds the robot makes.

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Google Inks Deal With Nuclear Company As Data Center Power Demand Surges

Par : BeauHD
14 octobre 2024 à 23:50
Google announced it will purchase power from Kairos Power's small modular reactors (SMRs) to support its clean energy goals and data center demands. The company did not disclose the financial terms of the deal. CNBC reports: There are only three SMRs that are operating in the world, and none in the U.S. The hope is that SMRs are a more cost-effective way to scale up nuclear power. In the past, large, commercial-scale nuclear reactor projects have run over budget and behind schedule, and many hope SMRs won't suffer that same fate. But it is uncharted territory to some extent. Kairos Power, which is backed by the Department of Energy, was founded in 2016. In July, the company began construction on its Hermes Low-Power Demonstration Reactor in Oak Ridge, Tennessee. Rather than use water as the reactor coolant -- as is used in traditional nuclear reactors -- Kairos Power uses molten fluoride salt. Google said the first reactor will be online by 2030, with more reactors going live through 2035. In total, 500 megawatts will be added to the grid. That's much smaller than commercial reactors -- Unit 4 at Plant Vogtle, which came online this year, is 1.1 gigawatts, for example -- but there's a lot of momentum behind SMRs. Advocates point to lower costs, faster completion times, as well as location flexibility as reasons. Monday's announcement is another example of the growing partnership between tech companies and nuclear power. Data centers need 24/7 reliable power, and right now nuclear is the only source of emissions-free baseload power. Many hyperscalers have ambitious emissions-reduction targets, which is why they're turning to nuclear power.

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25% of Adults Suspect Undiagnosed ADHD

Par : BeauHD
14 octobre 2024 à 23:10
An anonymous reader quotes a report from Neuroscience News: Attention deficit/hyperactivity disorder -- also known as ADHD -- is typically thought of as a childhood condition. But more adults are realizing that their struggles with attention, focus and restlessness could in fact be undiagnosed ADHD, thanks in large part to trending social media videos racking up millions of views. A new national survey of 1,000 American adults commissioned by The Ohio State University Wexner Medical Center and College of Medicine finds that 25% of adults now suspect they may have undiagnosed ADHD. But what worries mental health experts is that only 13% of survey respondents have shared their suspicions with their doctor. That's raising concerns about the consequences of self-diagnosis leading to incorrect treatment. "Anxiety, depression and ADHD -- all these things can look a lot alike, but the wrong treatment can make things worse instead of helping that person feel better and improving their functioning," said psychologist Justin Barterian, PhD, clinical assistant professor in Ohio State's Department of Psychiatry and Behavioral Health. An estimated 4.4% of people ages 18 to 44 have ADHD, and some people aren't diagnosed until they're older, Barterian said. "There's definitely more awareness of how it can continue to affect folks into adulthood and a lot of people who are realizing, once their kids have been diagnosed, that they fit these symptoms as well, given that it's a genetic disorder," Barterian said. The survey found that younger adults are more likely to believe they have undiagnosed ADHD than older generations, and they're also more likely to do something about it. Barterian said that should include seeing a medical professional, usually their primary care provider, to receive a referral to a mental health expert to be thoroughly evaluated, accurately diagnosed and effectively treated.

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À partir d’avant-hierFlux principal

Apple Could Release $2,000 'Apple Vision' Headset Next Year

Par : BeauHD
14 octobre 2024 à 22:30
Apple is working on a more affordable $2,000 "Apple Vision" spatial computing headset that could be launched as early as next year, according to Bloomberg's Mark Gurman. MacRumors reports: The new headset would be a lower-end counterpart to the $3,500 Apple Vision Pro, which was released in February. Apple reportedly expects this more affordable model to sell at least twice as many units as the Vision Pro, though "that's not saying much," adds Gurman. Apple will struggle to hit 500,000 Vision Pro sales this year, according to market tracker IDC. To achieve the lower price point, the Apple Vision would likely use a less powerful processor and cheaper materials than aluminum and glass. The device is also expected to omit certain inessential features, such as the EyeSight display that shows the user's eyes on the outside of the headset. Apple could also use larger, lower resolution displays for the more affordable version of the Vision Pro headset, according to previous reports. Gurman also notes that Apple is working on a second-generation Vision Pro, slated for release in 2026, and a separate smart glasses device to accompany the Vision headsets.

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AT&T, T-Mobile Prep First RedCap 5G IoT Devices

Par : BeauHD
14 octobre 2024 à 21:50
The first 5G Internet of Things (IoT) devices are launching soon. According to Fierce Wireless, T-Mobile plans to launch its first RedCap devices by the end of the year, while AT&T's devices are expected sometime in 2025. From the report: All of this should pave the way for higher performance 5G gadgets to make an impact in the world of IoT. RedCap, which stands for reduced capabilities, was introduced as part of the 3GPP's Release 17 5G standard, which was completed -- or frozen in 3GPP terms -- in mid-2022. The specification, which is also called NR-Light, is the first 5G-specific spec for IoT. RedCap promises to offer data transfer speeds of between 30 Mbps to 80 Mbps. The RedCap spec greatly reduces the bandwidth needed for 5G, allowing the signal to run in a 20 MHz channel rather than the 100 MHz channel required for full scale 5G communications.

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Adobe Starts Roll-Out of AI Video Tools, Challenging OpenAI and Meta

Par : BeauHD
14 octobre 2024 à 21:10
An anonymous reader quotes a report from Reuters: Adobe (ADBE.O), opens new tab on Monday said it has started publicly distributing an AI model that can generate video from text prompts, joining the growing field of companies trying to upend film and television production using generative artificial intelligence. The Firefly Video Model, as the technology is called, will compete with OpenAI's Sora, which was introduced earlier this year, while TikTok owner ByteDance and Meta Platforms have also announced their video tools in recent months. Facing much larger rivals, Adobe has staked its future on building models trained on data that it has rights to use, ensuring the output can be legally used in commercial work. San Jose, California-based Adobe will start opening up the tool to people who have signed up for its waiting list but did not give a general release date. While Adobe has not yet announced any customers using its video tools, it said on Monday that PepsiCo-owned Gatorade will use its image generation model for a site where customers can order custom-made bottles, and Mattel has been using Adobe tools to help design packaging for its Barbie line of dolls. For its video tools, Adobe has aimed at making them practical for everyday use by video creators and editors, with a special focus on making the footage blend in with conventional footage, said Ely Greenfield, Adobe's chief technology officer for digital media. "We really focus on fine-grain control, teaching the model the concepts that video editors and videographers use -- things like camera position, camera angle, camera motion," Greenfield told Reuters in an interview.

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Imgur Is No Longer Classifying Memes With Adult Humor As Mature

Par : BeauHD
12 octobre 2024 à 10:00
Imgur announced changes to its content moderation policies, no longer classifying memes with adult humor as mature. Going forward, only memes with sexualized or lewd content will receive the mature tag. The Verge reports: Imgur is making the changes after it collected feedback about its content moderation over the course of this year, including that its policies, "especially surrounding mature content, feel inconsistently applied, too subjective, or just rather confusing as a whole," according to a post from Imgur product manager Martyn O'Neill. Now, mature content consists "solely of sexualized or 'lewd'" content. Following the adjustments, O'Neill says that "warnings / post removals" are down nearly 35 percent month over month. Far fewer posts are being marked as mature as well; that stat has declined by almost 50 percent.

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NASA Confirms Plans To Develop Lunar Time Standard

Par : BeauHD
12 octobre 2024 à 07:00
NASA confirmed that it's working with international partners and standards organizations to create a Coordinated Lunar Time (LTC) for future lunar exploration. This time standard will account for relativity and be scalable for other celestial bodies, supporting long-term missions like Artemis and commercial space activities. From the report: The lunar time will be determined by a weighted average of atomic clocks at the Moon, similar to how scientists calculate Earth's globally recognized Coordinated Universal Time (UTC). Exactly where at the Moon is still to be determined, since current analysis indicates that atomic clocks placed at the Moon's surface will appear to 'tick' faster by microseconds per day. A microsecond is one millionth of a second. NASA and its partners are currently researching which mathematical models will be best for establishing a lunar time. To put these numbers into perspective, a hummingbird's wings flap about 50 times per second. Each flap is about .02 seconds, or 20,000 microseconds. So, while 56 microseconds may seem miniscule, when discussing distances in space, tiny bits of time add up. "For something traveling at the speed of light, 56 microseconds is enough time to travel the distance of approximately 168 football fields," said Cheryl Gramling, lead on lunar position, navigation, timing, and standards at NASA Headquarters in Washington. "If someone is orbiting the Moon, an observer on Earth who isn't compensating for the effects of relativity over a day would think that the orbiting astronaut is approximately 168 football fields away from where the astronaut really is."

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Physicists Generated Sound Waves That Travel In One Direction Only

Par : BeauHD
12 octobre 2024 à 03:30
An anonymous reader quotes a report from ScienceAlert: Imagine three people huddled in a circle so when one speaks, only one other hears. Scientists have created a device that works like that, ensuring sound waves ripple in one direction only. The device, developed by scientists at ETH Zurich and the Swiss Federal Institute of Technology Lausanne, is made up of a disk-shaped cavity with three equally-spaced ports that can each send or receive sound. In an inactive state, sound transmitted from port 1 is audible to ports 2 and 3 at equal volumes. Sound waves bounce back to port 1 as an echo as well. When the system is running, however, only port 2 hears port 1's sounds. The trick is to blow swirling air into the cavity at a specific speed and intensity, which allows the sound waves to synchronize in a repeating pattern. That not only guides the sound waves in a single direction, but gives more energy to those oscillations so they don't dissipate. It's kind of like a roundabout for sound. The scientists say their technique may inform the design of future communications technologies. New metamaterials could be made to manipulate not just sound waves but potentially electromagnetic waves too. "This concept of loss-compensated non-reciprocal wave propagation is, in our view, an important result that can also be transferred to other systems," says senior researcher Nicolas Noiray. The research was published in the journal Nature Communications.

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Bluesky Is Now Courting Threads Users

Par : BeauHD
12 octobre 2024 à 00:10
Bluesky, the decentralized social network cofounded by Jack Dorsey, created a Threads account to court users frustrated by Meta's moderation issues. Thurrott reports: This week, the Bluesky team also used Threads to share some tips on how to get started on Bluesky, how to get more engagement, and more. The company also emphasized its decentralized structure and more extensive customization options, with the app recently introducing a new theme font, adjustable font sizing, and the ability to pin posts on top of profiles. Bluesky also couldn't resist to engage in some strange trolling this week. "We're not like the other girls ... we're not owned by a billionaire," the team wrote on Threads yesterday. Of course, this the post that got the most engagement on the Bluesky Threads account with close to 500 comments as of this writing.

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