detect a plane at 5,000 meters high

China has been around for a while developing all types of sensors and radars whose characteristics suggest a future very different from the current one. Without going too far, last September They tested a device called LARIDa super radar that was able to detect a gigantic bubble of invisible plasma in the Pyramid of Giza. The latter is something very different, and can change the battlefield. Unprecedented underwater radar. In a secret location 1,000 meters deep, Chinese scientists have developed and tested what points to an unprecedented underwater sensor capable of detecting aircraft at high altitude from the depths of the ocean, representing an unparalleled strategic advance for the People’s Liberation Army (PLA) submarine fleet. To give us an idea, technology managed to identify a fixed-wing aircraft at 5,000 meters above sea levela milestone that no other nation has achieved to date. Such technology, which until now was considered impractical due to the complex acoustic properties of water, could dramatically improve the survivability of submarines against warplanes. antisubmarineequipped with advanced sensors to locate and destroy them. Implications and capabilities. Underwater radar represents a significant strategic advantage for the nation. The reason? Turn the current combat around, allowing your submarines to go from targets to hunters in anti-submarine warfare. Currently, aircraft equipped with advanced sensors can detect and attack submarines without being spotted, but with this new technology Chinese submarines could, a priori, receive early warnings of hostile aircraft and launch missiles from underwater with precision. And there is more, of course. The main technological challenge lies in the fact that most of the sound waves generated by aircraft are reflected from the sea surface, making their detection difficult. However, researchers at the Institute of Acoustics of the Chinese Academy of Sciences, led by Zhang Bo and Peng Zhaohuiemphasize that they have achieved an innovative solution by taking advantage of the multiple reflection of sound waves between the seabed and the water surface, allowing Extend detection range and improve radar sensitivity. System testing and limitations. Apparently, In 2022, China carried out secret tests of underwater radarmanaging to detect a plane 17 kilometers away and, attention, with a margin of error of less than one kilometer. Still, limitations were identified, such as a blind spot when aircraft fly directly over the sensors, as well as a detection range that still needs to be expanded for effective military applications. In this regard, Zhang and Peng continue working on system optimizationalthough they have not revealed recent data. Complement to the military intelligence network. China’s military strategy is based on a multi-layered approach that integrates various detection technologies. Currently, the People’s Liberation Army has a satellite network capable of tracking high-performance aircraft like the F-22 stealth fightersin addition to radar systems on ships and land stations. The new underwater radar would act as a complement, providing redundancy and improving detection capability in hostile environments. Future perspectives. Although the details of this development were kept secret for years due to its military sensitivity, the research team has recently published an article in the journal Acta Acusticaa job where information about the functionality of the system is provided. That said, and as is often the case with innovations of this type, everything indicates that there remains a long road of testing and improvements in operational scope to guarantee its effective integration in real combat scenarios. What does seem abundantly clear is that the innovative underwater detection system marks a paradigm shift in naval warfare, one where, in the absence of verifying it on the ground, It would give China a huge tactical advantagehighlighting its leadership in the development of cutting-edge underwater surveillance technologies. Image | Marinha In Xataka | China has tested its new super radar. They have detected a gigantic bubble of invisible plasma in the Pyramid of Giza In Xataka | China gains muscle in aerial technology: it already has new radars against drones, missiles and stealth aircraft

Xiaomi sweeps the high range with this mobile phone with a Leica camera. A real bargain during these sales

If you have been thinking about renewing your old mobile for a while, now is a good time to get good deals, since many stores have discounts available on numerous terminals. Such is the case of PcComponentes, which has available the Xiaomi 14Tone of the best mobile phones from the Chinese manufacturer, on sale. You can get it even cheaper than on Black Friday, for 449.99 euros. *Some prices may have changed since the last review A mobile with an excellent quality-price ratio This Xiaomi 14T It is a terminal that was launched in the second half of 2024. It stands out for having a screen 6.67 inch AMOLED and that offers 1.5K resolution. In addition, its refresh rate is 144 Hz and it reaches a maximum brightness of 4,000 nits. Its photographic system is another of its great assets. It is signed by Leica and has a 50+50+13 MP triple rear camera and the front one is 32 MP. The processor it has is the MediaTek Dimensity 8300 Ultra, accompanied by a RAM 12 GB and 256 GB of internal storage. In the connectivity section, this Xiaomi mobile is also very complete. Integrates WiFi 6E, NFCUSB-C charging port and Bluetooth 5.4. In addition, it comes packed with artificial intelligence and the operating system it comes with is Xiaomi HyperOS. The best accessories to protect this mobile XTCASE Magnetic Case for Xiaomi 14T *Some prices may have changed since the last review Wayneer Screen Protector compatible with Xiaomi 14T, (3 + 3 Pieces) *Some prices may have changed since the last review Some of the links in this article are affiliated and may provide a benefit to Xataka. In case of non-availability, offers may vary. Images | Xiaomi In Xataka | I am an amateur photographer and this is the accessory that made my photos jump in quality. In Xataka | Best large phones: which one to buy and 12 recommended large screen phones

Netflix and AI enthusiasm bring Wall Street to the verge of an all-time high

NEW YORK — Netflix, Oracle and other big tech companies boosted the New York Stock Exchange on Wednesday, as profits at those companies rose and enthusiasm grew about the revenue prospects that artificial intelligence can generate. The S&P 500 rose 37.13 points, or 0.6%, to 6,086.37, approaching its all-time high set last month. The Dow Jones Industrial Average added 130.92 points, or 0.3%, to 44,156.73, and the Nasdaq Composite rose 252.56, or 1.3%, to 20,009.34. The gains came even as most U.S. stocks fell under the weight of another rise in Treasury yields. For example, smaller company stocks in the Russell 2000 index lost 0.6%, and about two out of every three stocks in the S&P 500 sank. However, the gains from large influential stocks were more than enough to make up for it. Netflix helped lead the rise after it announced that live events such as American football games and a fight between Mike Tyson and Jake Paul helped it add nearly 19 million subscribers during the latest quarter. It also reported higher profits than analysts expected, and indicated that it is increasing subscription prices in the United States and other countries. Netflix titles rose 9.7%. The Netflix logo on a remote control. (Jenny Kane/Associated Press) On the other hand, Travelers advanced 3.2% after also beating analyst expectations for its earnings in the last quarter. The insurer said gains on its investments and growth in net written premiums helped it overcome losses created by Hurricane Milton, which hit the Florida coast in the Gulf of Mexico in October, and other catastrophes. Some of the market’s strongest boosts came from companies related to artificial intelligence. Oracle rose 6.8% after advancing 7.2% the previous day, ahead of the planned announcement — which ultimately came late on Tuesday — about Stargate, a joint venture that the White House says will begin building data centers. and the generation of electricity necessary for the further development of artificial intelligence in Texas. The partnership formed by Oracle, OpenAI and SoftBank will invest up to $500 billion. Shares of SoftBank Group Corp. in Tokyo rose 10.6%. Other AI-related stocks also gained ground, continuing their already fantastic run. Nvidia, the company whose chips are driving much of the movement toward AI, rose 4.4%. Its shares are above $147 after just two years ago they were below $18. The yield on the 10-year Treasury bond rose from 4.57% to 4.60%. It had been largely retreating since an encouraging update on inflation last week, but is still well above its position in September, when it was below 3.65%. In the cryptocurrency market, where prices have risen on hopes that President Donald Trump will make Washington more cryptocurrency-friendly, bitcoin was just above $104,000. On Monday it was above $109,000, a record.

Student dies after being shot by classmate at Nashville high school

NASHVILLE, Tennessee, USA — A student was killed and another wounded Wednesday when they were shot in the cafeteria of a Nashville high school, nearly two years after a school shooting in the city that sparked an emotional debate over gun control in Tennessee. The attacker, a 17-year-old boy who was also a student at Antioch High School, later committed suicide, Metropolitan Nashville Police spokesman Don Aaron said during a news conference. Police identified him as Solomon Henderson. Police Chief John Drake said the gunman “confronted” a 16-year-old student in the cafeteria and began shooting, causing her death. Police identified the student as Josselin Corea Escalante. Drake mentioned that police are investigating a motive and whether the shooter was specifically targeting the students he shot. The student who was injured suffered a graze and was treated and released from the hospital, Drake reported. Another student was taken to a hospital to treat a facial injury that occurred during a fall, Aaron said. There were two school resource officers in the building when the shooting occurred around 11 a.m. crazy time, Aaron said. They were not in the vicinity of the cafeteria and by the time they got there, the incident was over and the attacker had already committed suicide, Aaron added. The school has approximately 2,000 students and is located in Antioch, a Nashville neighborhood about 10 miles (16 kilometers) southeast of downtown. At a family safety center near a hospital, officials helped shocked parents reunite with their children. Dajuan Bernard was waiting at a Mapco gas station to meet his son, a 10th grader, who was held in the auditorium with other students that Wednesday afternoon. He learned about the shooting from his son, who “was a little scared,” Bernard said. Her son was upstairs from where the shooting occurred, but told her he heard the shots. “He was fine and he let me know that everything was fine,” Bernard said. “This world is so crazy, it could happen anywhere. We just have to protect the children and educate them well to prevent them from even doing this. “That is the hardest part,” he commented. Fonda Abner, whose granddaughter is a student at the school, said Antioch High School does not have metal detectors that would alert school authorities to the presence of a weapon. She said her granddaughter had called her a couple of times, but she only heard commotion and thought it was an accidental call. They spoke briefly until the call was disconnected. “It’s nerve-wracking waiting out here,” Abner said. United Family Fellowship, a church located in Antioch, hosted a vigil Wednesday night “for anyone in the community who needs a space to pray, process and find comfort,” the church posted on its Facebook account. Hours earlier, Adrienne Battle, superintendent of Nashville schools, said public schools have implemented a “range of security measures,” including partnerships with police for school resource officers, security cameras with weapons detection software, installing shatter-resistant film for security windows and vestibules that are a barrier between outside visitors and the main entrance. “Unfortunately, these measures were not enough to stop this tragedy,” Battle said. He added that there are questions about whether stationary metal detectors should be considered. “Although previous research has shown them to have limitations and unintended consequences, we will continue to explore emerging technologies and strategies to strengthen school safety,” Battle said. In October, a 16-year-old Antioch High School student was arrested after school resource officers and school employees discovered through social media that he had brought a gun to school the day before. When he was detained the next morning, officers found a loaded gun in his pants, police said. Wednesday’s school shooting came nearly two years after a gunman began shooting at a separate private Nashville elementary school, killing six people, including three children. The tragedy sparked a months-long effort among hundreds of community organizers, families, protesters and many more pleading with lawmakers to consider passing gun control measures in response to the shooting. However, in a state dominated by Republicans, GOP lawmakers refused to do so. With the overwhelming Republican majority intact after the November elections, it is unlikely that lawmakers’ stance has changed enough to consider any significant bill addressing gun control. Instead, lawmakers have been more open to adding more security to schools, including passing a bill last year that would allow some teachers and staff to carry concealed firearms on public school grounds, and ban parents and other teachers to know who was armed. Antioch, a growing and diverse area of ​​Nashville, has seen other shootings in recent years. A deadly 2017 shooting at Burnette Chapel Church of Christ killed one woman and injured seven people. And in 2018, an attacker killed four people at a Waffle House restaurant. State Rep. Shaundelle Brooks ran for office largely because of the death of her son in the Waffle House shooting and was elected last year after the Covenant shooting. She said the Antioch High School shooting reinforces the need for gun control reforms. “We must improve,” he asserted. “Since losing my son, Akilah, in a mass shooting in 2018, I have been fighting to ensure this never happens again,” the Nashville Democrat said in a statement. “Here we are almost 7 years later, and our communities are still affected by gun violence.” Samantha Dickerson had taken her 14-year-old son’s phone away as punishment, so when she received a message from his school about the shooting, she had no way to contact him. “I was nervous,” she said. “I was really about to collapse.” After about three hours of waiting, she finally received a call from her English teacher and spoke to her son. “When I heard his voice, I just started crying,” she said. ___ Associated Press writers Kimberlee Kruesi in Nashville and Adrian Sainz in Memphis, Tennessee, contributed to this report. ___ This story was translated from English by an AP editor with the help of a generative artificial intelligence tool.

At least one student dies after shooting at a Nashville high school

A shooting at Antioch High School, located near Nashville, Tennessee, has left one student dead and several injured. The incident occurred this Wednesday at 11:00 am, and authorities have confirmed that the attacker, a 17-year-old boy, took his own life after the attack. The Metropolitan Nashville Police Department reported that the shooting occurred in the cafeteria area of ​​the educational center. The two victims, both female, were quickly taken to a nearby hospital. Authorities added that one of the victims was pronounced dead on arrival, while the other suffered minor facial injuries. Students wait to get off a bus at a unification site following a shooting at Antioch High School in Nashville, Tennessee. (Photo: George Walker IV/ AP) Students were evacuated Likewise, Don Aaron, police spokesman, assured in a press conference that the situation is under control and that there is no longer a threat to the school community. Despite this, the students were evacuated and taken to a reunification site where they could meet their parents. The authorities have urged relatives not to approach the school and go to the established meeting point. Meanwhile, authorities have set up a contact number so that students’ families can obtain information about their loved ones. Parents are advised to call 615-401-1712, although it has been reported that the line may be overwhelmed. They also asked for patience and not to hang up if they do not hear a tone. Keep reading: – New gun laws to go into effect in several states on January 1, 2025– Who are the 4 Hispanic criminals whose death sentences were commuted in the US?– Biden says he feels frustrated by mass car accident in New Orleans

Log In

Forgot password?

Forgot password?

Enter your account data and we will send you a link to reset your password.

Your password reset link appears to be invalid or expired.

Log in

Privacy Policy

Add to Collection

No Collections

Here you'll find all collections you've created before.