A Radio Talk by Charles F. Kettering
This Sunday afternoon, in every part of the country, people are
listening to this great orchestra. Radio can carry this music to any
place in the world.
Two thousand two hundred years later,
Sir William Gilbert, Queen
Elizabeth's physician, did a little more
thinking and experimenting with the idea and called the phenomenon
electricity. Sixty years
von Guericke, a German, built a machine
to generate static electricity.
One hundred years later, Benjamin
Franklin identified positive and
negative electricity and proved lightning and electricity were the same
thing. In 1820, Oersted, a Dane,
proved that electricity would produce
magnetism. And about the same time, Faraday did some experimenting and
discovered the principles of the electric motor.