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On January 11, Norway became the first country to begin turning off signals from its FM radio network. The Norwegian stations will instead use only digital audio broadcasting, called DAB. FM, or frequency modulation, radio stations have been in opera
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Three radio stations in the United States mainly broadcast one thing: the official time. The three are radio stations WWV and WWVB, in the state of Colorado, and WWVH, on the island of Kauai in Hawaii. They send out signals that are used by millions
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Relief Radio Station Signals Dire State of Communications in Tacloban, Philippines TACLOBAN, PHILIPPINES All of Taclobans 15 radio stations were knocked off the air when Typhoon Haiyan devastated the Philippine city of 220,000 people. A response with
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Science and technology 科学技术 Low-cost radar 低成本雷达 A programme worth watching 值得一看的节目 How air-traffic control can use television signals to plot aircraft 空中交通管制局如何利用电视信号找出飞行器位置？
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Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe
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Science and technology 科学技术 Searching for aliens 寻找外星人 The wow factor 防止再次意外 A new citizen-science project will improve the chances of finding ET 一个新的平民科学项目可以增大找到地外智慧的机会 EVER
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