✈️ China tracks US stealth fighters using Starlink, China’s nuclear submarine sightings in Taiwan Strait show advanced tech, Amazon mandates employees in office five days/week

Plus: Solid-state battery with 1,070 Wh/L energy density could be game-changer for EVs                                                                                                                                                                                                                                                                                                                                                                                                                 September 17, 2024 | [Read Online]( 🗓️ [Less than a month to Engineering Talks' automotive webinar]( Our new and free webinar, "[The Future of Automated Automotive Quality Inspection](," is coming soon! Don't miss the opportunity to discover integrated solutions for automotive metrology, participate in Q&A sessions, and more. [Join our webinar]( Chinese researchers have found an innovative way to use SpaceX Starlink satellite constellations to detect aircraft, like stealth fighters, passively. According to Chinese media, this was achieved by effectively detecting the “shadow” of an object between the detector and the electromagnetic radiation emitted by the satellites. The team behind the discovery reportedly used a DJI Phantom 4 Pro drone to simulate a stealth fighter and conduct their experiment to achieve this. This drone was chosen as it has roughly the same radar cross-section as something like an American F-22. Dive deeper into this [Must-Read](. 🔥Today’s job of the day as featured on [jobs.interestingengineering.com](: > [SENIOR NETWORK ENGINEER]( > [Product Software Engineer - Senior Fullstack Engineer]( Reading Time: 4 mins Did a friend forward this e-mail to you? [Subscribe here.]( MUST-READ 🍳 [Frying pan-sized detector could track US stealth fighters using Starlink, claims China]( If true, the experiment, conducted off the coast of Guangdong in the South China Sea, could [revolutionize stealth aircraft detection](. The Chinese government’s State Radio Monitoring Centre oversaw the experiment, and the results were peer-reviewed before publication. Stealth aircraft, like the F-22, are designed to reduce radar reflection through clever geometric shapes and radar-absorbing paints. This combination of technologies [reduces the “size”]( of the objects on radar equipment, hopefully masking their true nature. The basic idea is that when an aircraft flies through the space between Starlink satellites and ground antennas, it can cause[forward scattering]( of the satellites’ electromagnetic waves, which can disrupt normal communication signals. ☢️ [China’s nuclear submarine sightings in Taiwan Strait show advanced tech: Report]( Several sightings of what looks like [Type 094 submarines]( in the Taiwan Strait suggests that China’s People’s Liberation Army (PLA) has boosted the technology and number of its nuclear submarines. The sightings also hint at the PLA having at least [two ballistic missile submarines]( (SSBN) and their crews on standby to act as deterrents in the case of an emergency. These suggestions were made in a military magazine published by the [Shaanxi Association for Science and Technology](. It should be noted that the sightings of Chinese nuclear submarines have been a matter of debate, and it is unclear which variants have been sighted at what locations. 🧑🏽‍💻 [Amazon’s shift: First big tech to mandate employees in office five days a week]( Starting January 2025, Amazon aims to have all employees back [full-time](. Amazon’s CEO, Andy Jassy, sent a memo on September 16 stating that corporate staff must work at the office five days a week. The decision represents a significant change from Amazon’s previous return-to-work policy, which mandated that corporate employees be in the office at least [three days per week](. The employees have time until January 2 to comply with the new policy set by the company. Love what you're reading, but too many emails? Sign up to IE+ to get Blueprint Weekly, our exclusive weekly premium newsletter that gives all the insights you love in a more digestible weekly format– plus, enjoy an Ad-Free experience on our website. Try IE+ today for just $1 in the first month. [Subscribe here]( HOT TOPICS OF THE DAY SCIENCE > A Mississippi researcher found a new species of wasp inside the abdomen of a common fruit fly in his own backyard. ([More]() > Astronomers, using the NASA/ESA James Webb Space Telescope, have confirmed that supermassive black holes can deprive their host galaxies of the gas required for star formation. ([More]() > A new software package developed by researchers at Macquarie University can accurately model the way waves - sound, water or light - are scattered when they meet complex configurations of particles. ([More]() ENERGY > Scientists from the Argonne National Laboratory, U.S. Department of Energy, have uncovered a critical hydrogenation mechanism that accelerates the degradation of lithium-ion batteries in electric vehicles (EVs). ([More]() > North Stafford High School’s new solar array will generate 54 million kilowatt hours of renewable energy and cut carbon dioxide emissions by 41,583 tons. ([More]() > The Atlantic Marine Energy Center (AMEC), led by the University of New Hampshire, is working to develop the technology and skills that will help unlock the power of the sea as a renewable source of energy. ([More]() INNOVATION > In an era of rising operational costs and labor shortages, Hestia Technology Limited, founded in Hong Kong in 2018 by a chemistry professor, aims to revolutionize the culinary world with its innovative robotic kitchen systems. ([More]() > A programmer has created a 12-legged walking coffee table that resembles a crab on the move. ([More]() > Researchers improved electric vehicle battery monitoring by utilizing diamond quantum sensors with nitrogen-vacancy centers. By minimizing misalignment issues, they achieved higher accuracy in temperature and magnetic field measurements, enhancing safety and performance in EV systems. ([More]() VIDEO > Matt Ungar, Govee’s Social and Community Manager, showcases their smart lighting with circuit-printed lights that shine bright without fading. ([More]() > Shenzhen Yincheng Technologies won the IFA Innovation Award with their stunning Year of Dragon magnetic aluminum keyboard. Which design would you choose? ([More]() IE QUIZ: THE RESULTS In yesterday’s quiz, we asked you to find the area of the square. The answer is: 2.63 Ready for more brainy challenges? Gear up for future IE quizzes by following us on [Instagram]( and [Facebook!]( FROM THE WEB > "Golden Lettuce" genetically engineered to pack 30 times more [vitamins]( > China builds laser communication ground station for massive satellite data [transmission]( > A vaccine could become a ‘vital’ weapon against pancreatic [cancer]( > Could lava be used as a sustainable building material in the [future](? > Napoleon: "Unique" site reveals bloody cleanup after emperor's last [battle]( > Half of advanced melanoma patients live for 10 years with double drug [treatment]( Additional Reads --------------------------------------------------------------- [⚙️ Mechanical:](Explore the wonders of mechanical engineering. [🛩️ Aerospace:]( The latest on propulsion, satellites, aeronautics, and more. [🧑🏻‍🔧 Engineer Pros:]( The latest in engineering news, career updates, and insider knowledge. [🧠AI Logs:]( Insights into the intricacies and developments within the realm of artificial intelligence. 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