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The Radio Invention

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by

Taya Chambers

on 28 October 2014

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Transcript of The Radio Invention

The Radio Invention
Who? Where? When?
From 1904 to 1914 the radio went through many different refinements with the invention of the diode and triode vacuum tubes. These enabled better transmission and reception of voice and music.
Who? Where? When?
On November 2,1920 the first commercial radio station went on air in Pitsburg, Pensylvania. It was an instant success and it began the radio revolution, known as the "Golden Age of Radio"
Diode and Triode vacuums
KDKA was the world's first commercial station
Who? Where? When?
In 1923, Edwin Armstrong invented the superhetrodyne radio. This was a major advancement in how the radio actually worked.
Edwin Armstrong with his superhetrodyne radio
Who? Where? When?
Guglielmo Marconi successfully sent the first radio message across the Atlantic Ocean in December 1901 from England. His invention only had buzzing sounds but no voice or music.
Guglielmo Marconi
Purpose of the Radio
During WWI Military leaders recognized the radios value in communicating with infantry and ships at sea. Since there weren't any televisions there was a need for entertainment and communication.
World War I
Evolution of the Radio
During the Golden Age, the radio evolved from a simple device in a large box to a complicated piece of equipment housed in an attractive wooden cabinets.
Evolution of the Radio
The development of the radio began in 1893 with Nikola Tesla's demonstration of wireless radio communication in St. Louis, Missouri. His and Marconi's work laid out the foundation for those later inventors who worked to perfect the radio we are currently using today.
Pros and Cons of the Radio
Pros
1)comes in all shapes and sizes
2)Cost- remains the cheapest form of electronic entertainment
3)Advertising
4)Convenience- can listen to the radio while driving and performing other tasks
Pros and Cons of the Radio
Cons
1)No images
2)No interactivity
Full transcript