How do radio sounds travel without wires?
We need..no wires to hear the distant thunder but the sound takes several seconds to reach us. Teiephone talk travels almost a million times faster, but we need wires to carry the sound. Radio travels at the same speed as sounds by telephone, but no wires are needed to carry it along. A radio program is somewhat like a present by parcel post. Someone wrapped the package and mailed it at the post office. The present is hidden in layers of brown paper and we loose sight of the package as it travels on its way to the right address. When it arrives, you open the wrappings and at last get a look at your present. A radio program is wrapped up in the broadcasting studio and sent by carrier waves. When it leaves the station, the program seems to disappear because the carrier waves are silent and invisible. They travel at more than 650 million miles an hour and reach your radio set in less than a second. Vfen you turn on your set, the program is separated from its carrier waves. You then hear t
