This is a 34 slide, highly animated, power point presentations on Inventions - Invention of Radio. Each of the presentation slides are editable so you can change it to fit your individual needs.
Radio owes its development to 2 other inventions, the telegraph and the telephone, all 3 technologies are closely related. Radio technology began as "wireless telegraphy“. However, it all started with the discovery of "radio waves" - electromagnetic waves that have the capacity to transmit music, speech, pictures and other data invisibly through the air. Many devices work by using electromagnetic waves including: radio, microwaves, cordless phones, remote controlled toys, television broadcasts, and more.
Guglielmo Marconi, an Italian inventor, proved the feasibility of radio communication. He sent and received his first radio signal in Italy in 1895. By 1899 he flashed the first wireless signal across the English Channel and 2 years later received the letter "S", telegraphed from England to Newfoundland. This was the first successful transatlantic radiotelegraph message in 1902.
Americans listened to the same sporting events and took up the same fads. Baseball games and boxing matches could now reach those far away from the stadiums and arenas. A mass national entertainment culture was flowering
The presentation covers the following:
Roots of Radio
Early Growth (2)
& Patent Control
Reginald A. Fessenden
Broadcasting Begins: Land
Broadcasting Begins: Sea
First FM Antenna System
Radio “Takes Off”
KDKA’s First Broadcast
Emergence of Radio
Entertainment Culture Forms
End of Presentation
This is one of many power point presentations I offer in my store under the heading.... Inventions