🚅 China's maglev train, submarine detection at near-lightspeed, world's largest gold deposit

China is pushing the boundaries of high-speed rail technology with its ambitious development of maglev trains that could revolutionize travel within the country.

Passengers in China could soon stream ultra-high-definition videos or play online games on their smartphones while traveling at 1,000 km/h (621 mph) on high-speed maglev trains.

Currently, the country’s high-speed trains operate at 350 km/h (217 mph) and support 5G connectivity, even in long tunnels. Delve deeper into our Must-Read.

🔥Today’s job of the day as featured on jobs.interestingengineering.com:

> Senior Software Engineer (embedded C++)
> VP Access Engineering

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🚅 China’s 621 mph maglev train with 5G could tap Hyperloop idea that Elon Musk abandoned

Maintaining communication between phones and base stations at near-sonic speeds is a major challenge. As the train moves, the signal frequency shifts, disrupting the stable high-frequency signals needed for data transfer. Installing base stations in near-vacuum tubes is also tough; if an antenna dislodges due to vibrations, it could endanger the high-speed train.

Researchers have proposed a solution to simplify base station installation by laying two parallel cables along the inner wall of the tube, the South China Morning Post reported.

These specialized cables can emit electromagnetic signals, enabling continuous and stable connections between smartphones and mobile networks. Thus, by applying efficient coding techniques and fine-tuning key signal parameters, disruptions from frequency shifts can be minimized. Initial computer simulations confirm that this approach supports stable communication under the 5G standard during data transmission.

🛜 Submarine detection at near-light-speed possible with China’s sci-fi-like radar

Chinese scientists have made a breakthrough in submarine detection by creating a radio-emitting source in the sky using high-energy microwave synthesis technology.

This virtual signal source, which can be called a ghost radar, can emit electromagnetic waves continuously while traveling at nearly the speed of light.

The extremely low-frequency (ELF) electromagnetic waves, capable of penetrating seawater, enable the detection of submarines hidden hundreds of meters below the surface.

🏆 1,000 tons of gold deposit that’s largest in world discovered in China: Report

A massive gold discovery in central China has the potential to reshape the nation’s gold reserves and significantly contribute to global supply.

The Geological Bureau of Hunan has claimed that Chinese geologists have identified more than 40 gold veins, with reserves of 300 tonnes, at a depth of 2,000 meters (6500 feet) beneath the Wangu goldfield in Pingjiang County.

The total gold reserve at the site, extending to a depth of 3,000 meters (9800 feet), is estimated to exceed 1,000 tonnes. This massive reserve is valued at approximately 600 billion yuan (approximately $83 billion).

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