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发表于 2019-1-1 21:47:44
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China’s new antenna is five times the size of New York City, but some fear it could be a cancer risk
https://www.scmp.com/news/china/ ... city-it-also-cancer
The Wireless Electromagnetic Method (WEM) project took 13 years to build but researchers said that it was finally ready to emit extremely low frequency radio waves, also known as ELF waves. Those waves have been linked to cancer by the World Health Organisation-affiliated International Agency for Research on Cancer.
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The project follows the construction of China’s first military-grade Super Low Frequency transmission station in 2009.
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The antenna would emit ELF signals with a frequency of between 0.1 to 300 hertz, the researchers said.
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Project WEM’s main surface structure is a pair of high voltage power supply lines stretching from north to south, east to west on steel lattice towers, which form a cross that is 60km (37 miles) wide and 80km to 100km (50 to 62 miles) long.
At the end of each power line, thick copper wire goes underground through a deep borehole. Two power stations generate strong currents and electrify the ground in slow, repeating pulses, turning the earth underfoot into an active source of electromagnetic radiation.
The radio pulses not only pass through the atmosphere, but travel through the Earth’s crust as well, with a range of up to 3,500km (almost 2,200 miles), according to the project scientists.
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The International Agency for Research on Cancer, part of the World Health Organisation, has previously warned that ELF waves are “possibly carcinogenic to humans”.
Numerous epidemiological and experimental studies conducted by researchers around the world have linked long-term ELF exposure to an increased risk of childhood leukaemia.
In a 500-page report constantly updated since 2007, the WHO has documented a large number of academic investigations linking ELF radiation to a range of illnesses including delusions, sleep deprivation, stress, depression, breast and brain tumours, miscarriages and suicide.
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In 1968, the US Navy proposed Project Sanguine, a giant ELF antenna that would have covered two-fifths of the state of Wisconsin to enable undersea communications with submarines.
The project was terminated due to massive protest by residents.
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In the 1980s the Soviet Union constructed Zevs, a considerably more powerful facility on the Kola Peninsula inside the Arctic Circle.
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According to the WHO, an ELF field can affect human nerve fibres and stimulate synaptic transmissions in neural networks.
It can also affect retina cells, generating a sporadic flash of light in people's eyes.
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Some previous studies had shown that wounds healed more slowly when exposed to ELF radio waves several times a day.
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