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Essay

Radio History

Essay specific features

 

Issue:

History

 

Written by:

Jesus Z

 

Date added:

March 2, 2012

 

Level:

 

Grade:

A

 

No of pages / words:

6 / 1415

 

Was viewed:

3357 times

 

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Essay content:

It all started with the discovery of “radio waves.” Radio waves are electromagnetic waves that have the capacity to transmit music, speech, pictures, and other data invisibly through the air. Over 120 years ago radio waves were first invented by a man named Heinrich Hertz. This was caused by a spark leaping across a gap that generated electromagnetic waves...
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Hertz was a German physicist who demonstrated that rapid variations or electric current could be projected into space in the form of radio waves similar to those of light and heat. 1894, seven years after Hertz invention, a man by the name of Guglielmo Marconi invented a spark transmitter with and antenna at his home in Bologna, Italy...
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