When a meteoreven if it is no bigger than a grain of sandhits the earth's atmosphere, it leaves a long trail of ionized particles 60 miles up. Radio communications men have known for years that these trails act as wave reflectors, and they have tried to use them to make certain very short waves, which normally stop at the horizon, carry messages far around the curve of the earth. Chief difficulty was that most of the ionized trails last only a second or so. Before one of them could be located and used as a reflector, it was usually too...
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