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Wy back in my past I remember we set up an experiment in antartica with an antenna about 10 miles long connected to a high speed data tape recorder to capture the cyclotron effect of the earth (whistlers) this was in the days before video tape recorders so this system was a sort of speeded up audio recorder but played back at normal audio speed they sounded unreal. I forget who in our physics dpt. theorised that they exisited but the experiment was better than expected. From memory they are started from a lightning strike somewhere on earth and the earths magnetic field then turns this planet into a giant cyclotron and cycles the energy from the strike around and around
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Whistlers
