GUIYANG:
A ban on radio equipment and electromagnetic gadgets went into effect in the core silence zone of the world’s largest telescope located in southwest China’s Guizhou province. Covering a wide range of electronic equipment from phones, digital cameras and smart wearable devices to tablets, speakers and drones, the ban, which started on Monday, is part of new regulations to keep signal noise down and prevent human activities from affecting the telescope, known as the Five-hundred-metre Aperture Spherical Telescope .
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