Latest news with #Reno
Yahoo
17 hours ago
- Science
- Yahoo
Physicists Blast Gold to Astonishing Temperatures, Overturning 40 Years of Physics
Physicists superheated gold to 14 times its melting point, disproving a long-standing prediction about the temperature limits of solids Gold usually melts at 1,300 kelvins—a temperature hotter than fresh lava from a volcano. But scientists recently shot a nanometers-thick sample of gold with a laser and heated it to an astonishing 19,000 kelvins (33,740 degrees Fahrenheit)—all without melting the material. The feat was completely unexpected and has overturned 40 years of accepted physics about the temperature limits of solid materials, the researchers report in a paper published in the journal Nature. 'This was extremely surprising,' says study team member Thomas White of the University of Nevada, Reno. 'We were totally shocked when we saw how hot it actually got.' The measured temperature is well beyond gold's proposed 'entropy catastrophe' limit, the point at which the entropy, or disorder, in the material should force it to melt. Past that limit, theorists had predicted solid gold would have a higher entropy than liquid gold—a clear violation of the laws of thermodynamics. By measuring such a blistering temperature in a solid in the new study, the researchers disproved the prediction. They realized that their solid gold was able to become so superheated because it warmed incredibly quickly: their laser blasted the gold for just 45 femtoseconds, or 45 quadrillionths of a second—a 'flash heating' that was far too fast to allow the material time to expand and thus kept the entropy within the bounds of known physics. 'I would like to congratulate the authors on this interesting experiment,' says Sheng-Nian Luo, a physicist at Southwest Jiaotong University in China, who has studied superheating in solids and was not involved in the new research. 'However, melting under such ultrafast, ultrasmall, ultracomplex conditions could be overinterpreted.' The gold in the experiment was an ionized solid heated in a way that may have caused a high internal pressure, he says, so the results might not apply to normal solids under regular pressures. The researchers, however, doubt that ionization and pressure can account for their measurements. The extreme temperature of the gold 'cannot reasonably be explained by these effects alone,' White says. 'The scale of superheating observed suggests a genuinely new regime.' [Sign up for Today in Science, a free daily newsletter] To take the gold's temperature, the team used another laser—in this case, the world's most powerful x-ray laser, which is three kilometers (1.9 miles) long. The machine, the Linac Coherent Light Source at the SLAC National Accelerator Laboratory in California, accelerates electrons to more than 99 percent the speed of light and then shoots them through undulating magnetic fields to create a very bright beam of one trillion (1012) x-ray photons. When this laser fired at the superheated sample, the x-ray photons scattered off atoms inside the material, allowing the researchers to measure the atoms' velocities to effectively take the gold's temperature. 'The biggest lasting contribution is going to be that we now have a method to really accurately measure these temperatures,' says study team member Bob Nagler, a staff scientist at SLAC. The researchers hope to use the technique on other types of 'warm dense matter,' such as materials meant to mimic the insides of stars and planets. Until now, they've had no good way to take the temperature of matter in such toasty states, which usually last just fractions of a second. After the gold trial, the team turned its laser thermometer on a piece of iron foil that had been heated with a laser shock wave to simulate conditions at the center of our planet. 'With this method, we can determine what the melting temperature is,' Nagler says. 'These questions are super important if you want to model the Earth.' The temperature technique should also be useful for predicting how materials used in fusion experiments will behave. The National Ignition Facility at Lawrence Livermore National Laboratory, for example, shoots lasers at a small target to rapidly heat and compress it to ignite thermonuclear fusion. Physicists can now determine the melting point for different targets—meaning the whole field could be heating up in the near future. Solve the daily Crossword
Economic Key
2 days ago
- Business
- Economic Key
OPPO Launches Reno14 Series in Egypt
OPPO, the world's leading smart device brand, is thrilled to announce the upcoming launch of its highly anticipated Reno14 Series in Egypt. This latest lineup marks a new chapter in mobile innovation, blending sleek, trendy design with advanced AI capabilities to empower users to express their creativity and elevate their everyday experiences. To celebrate the debut of the Reno14 Series, OPPO will host a vibrant launch event, thoughtfully curated to showcase the device's advanced AI flash photography capabilities. With the bold slogan 'AI Party Bestie,' the new Reno14 Series builds upon the strong legacy of the Reno lineup, delivering significant improvements in AI-powered photography, 4K underwater video, long battery life, and productivity. These features are integrated within an ultra-slim and trendy design that seamlessly blends modern aesthetics with powerful technology tailored to today's dynamic lifestyles. In this context, OPPO is pleased to introduce the Reno14 Series to Egyptian customers. This launch marks a significant milestone in OPPO's ongoing commitment to making advanced, human-centric, AI-driven technology both accessible and affordable for the local market. Beyond its innovative AI photography and enhanced productivity tools, the Reno14 Series embodies OPPO's dedication to empowering users to capture and share their most memorable moments with ease. OPPO's vision is to drive meaningful innovation that enriches daily life while actively contributing to the growth of Egypt's dynamic and rapidly evolving tech ecosystem. Through the Reno14 Series, OPPO continues to inspire youth to embrace technology and confidently Make Their Moment. That's why the Reno14 Series is the ultimate AI Party Bestie. The Reno14 Series comprises three distinct models Reno14 Pro 5G, Reno14 5G, and Reno14 F 5G each featuring a bold and innovative design that significantly elevates AI photography and redefines user expectations for mobile imaging and aesthetics. Whether capturing dynamic moments or maximizing daily productivity, the Reno14 Series sets a new standard in both performance and style. OPPO reaffirms its leadership in technology and innovation in Egypt, not only by delivering exceptional value, but also by inspiring users to unleash their full creative potential. The Reno14 Series embodies OPPO's continued commitment to redefining the mobile experience through meaningful innovation. Stay tuned for the official unveiling of the OPPO Reno14 Series in Egypt, scheduled for the final week of July. تم نسخ الرابط
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Travel + Leisure
4 days ago
- Entertainment
- Travel + Leisure
This Nevada City Was Just Named a Las Vegas Dupe—Offering Casino Culture at a Fraction of the Price
Summertime in Las Vegas certainly delivers the fun. Take this year as the perfect example, with the Backstreet Boys in town for their residency at the Sphere, Bruno Mars at the Park MGM, and pool parties galore, there's something for everyone in Sin City. However, spending a summer vacation in Vegas can come with a hefty price tag. According to Budget Your Trip, the average cost of a week-long stay in Vegas will run about $2,583 for a solo traveler. And that's without major ticket items. So, what's one to do? It's easy: visit a Las Vegas dupe. Travel dupes are those lesser-known destinations that are very similar to other, more popular spots, offering entertainment, dining, and fun that's nearly identical at a lower price point. In July, travel and entertainment experts at a platform for casino and gaming insights, unveiled its list of five budget-friendly destinations in the U.S. that deliver the "thrills, entertainment, and casino action Vegas is famous for." "These alternatives prove you don't need to break the bank to experience world-class gaming, vibrant nightlife, and memorable entertainment," the team added. No. 2 on that list is also rather close to Las Vegas: Reno, Nevada. "Known as 'The Biggest Little City in the World,' Reno delivers authentic Nevada casino culture without the inflated Strip prices," the team wrote. "You're still getting that desert casino atmosphere, but hotel rooms often cost half of what you'd pay in Vegas, and restaurant prices are significantly more reasonable." It added that Reno's downtown casino district is very walkable and far more compact than the Strip, "which makes it easy to hop between venues. Reno also offers outdoor activities like Lake Tahoe access, giving you more bang for your vacation buck." The only destination to outrank Reno is a bit of a wildcard: Kansas City, Missouri. "The Heart of America delivers surprising casino excitement with multiple gaming destinations and entertainment venues at prices that make Vegas look overpriced," the team wrote. "Kansas City's casino resorts offer spacious rooms for less than half of what you'd pay on the Strip, and the city's famous barbecue scene means you'll eat like royalty without the premium pricing." It noted that, beyond offering all the table games and slots you may be looking for, the city comes with the bonus of plenty of Midwest hospitality and a fantastic live music scene that provides "entertainment options that go well beyond the casino floor." Also joining these two on the list is Biloxi, Mississippi, which provides a unique coastal backdrop to your gaming; Laughlin, Nevada, which the team called a "more relaxed, affordable version of the Nevada casino experience; and Tunica, Mississippi, which "has reinvented itself as a major casino destination in the Mississippi Delta." Though if you can swing it, nothing beats a true Vegas experience. And if you need a little help on how to do it right, here's Travel + Leisure's guide on how to plan the perfect trip to Las Vegas for the summer of 2025.
6 days ago
- Sport
Diamondbacks All-Star second baseman Ketel Marte placed on restricted list following burglary
PHOENIX -- Arizona Diamondbacks All-Star second baseman Ketel Marte was placed on the restricted list Friday after his home was burglarized during the All-Star break. Marte was not in the lineup Friday night gainst St. Louis as he deals with what Scottsdale police called a 'high-dollar residential burglary' while he and his family were in Atlanta for the All-Star game. 'He's dealing with a personal issue, so he asked for some time off, time away, just to get grounded and get himself back to where he can come back here and play and be a force for us," Diamondbacks manager Torey Lovullo said. 'So it's kind of a day-to-day situation.' The Diamondbacks made a flurry of moves before their first game back from the All-Star break, bringing up catcher Adrian Del Castillo and right-hander Trevor Richards from Triple-A Reno. Arizona also optioned infielder Tristan English to Reno and signed infielder Sergio Alcántara as a major league free agent. Catcher Gabriel Moreno was transferred to the 60-day injured list with a broken finger suffered when he was hit by a pitch last month.
San Francisco Chronicle
6 days ago
- Sport
- San Francisco Chronicle
Diamondbacks All-Star second baseman Ketel Marte placed on restricted list following burglary
PHOENIX (AP) — Arizona Diamondbacks All-Star second baseman Ketel Marte was placed on the restricted list Friday after his home was burglarized during the All-Star break. Marte was not in the lineup Friday night gainst St. Louis as he deals with what Scottsdale police called a 'high-dollar residential burglary' while he and his family were in Atlanta for the All-Star game. 'He's dealing with a personal issue, so he asked for some time off, time away, just to get grounded and get himself back to where he can come back here and play and be a force for us," Diamondbacks manager Torey Lovullo said. 'So it's kind of a day-to-day situation.' The Diamondbacks made a flurry of moves before their first game back from the All-Star break, bringing up catcher Adrian Del Castillo and right-hander Trevor Richards from Triple-A Reno. Arizona also optioned infielder Tristan English to Reno and signed infielder Sergio Alcántara as a major league free agent. Catcher Gabriel Moreno was transferred to the 60-day injured list with a broken finger suffered when he was hit by a pitch last month. ___
