Bruce Teeple, age 9, of Media, Penn

How does radio travel?

The music and the voices, the signals and all the other radio noises are sent out from the broadcasting station  They fan out in radio beams of electromagnetic energy and they travel at about 186,000 miles a second  Those beams are silent and invisible  The air around us is filled with radio beams carrying messages from countless stations dotted around the world, But our ears cannot hear them ‑ until we turn on our little radio sets 

When we tune in a receiving set, it selects the program from the station we want  The antenna traps the radio beam and lets it trickle down into the box  There it is turned back again into the sounds which is being made in the broadcasting station