Science: Curved Radio

Long-wave radio signals spray out from the transmitters in undulations from 200 to 25,000 metres in length. They surge through & around obstacles or up against and down from the ionized Kennelly-heaviside layer of the stratosphere. Short radio waves are not so fluid. Like light waves, which are very much shorter, short radio waves travel in straight lines only.

Guglielmi Marconi, father of radio, Roman Senator, the papal marchese who built Vatican City's radio station, wants to give his good friend the Pope an inviolable means of communication between the Vatican and...

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