Radio 2

Gabe, LeShone

Radio video link

• First radio was built in 1901 by Guglielmo Marconi  
• Uses electromagnetic signals
• radio today reaches more than 90% of the people in America a week
• A Megahertz radio signal is created by shaking electrons up and down 1 million times a second
• until 1971 you could not listen to the radio without a license in the U.K.

the radio is liberation because it helps inform people what is going on in the world and have a sense of knowledge

Citation

Beaty, Donald. "Radio." The Gale Encyclopedia of Science. Ed. K. Lee Lerner and Brenda Wilmoth Lerner. 5th ed. Farmington Hills, MI: Gale, 2014. Science in Context. Web. 1 Oct. 2015.

"Radio." American Decades. Ed. Judith S. Baughman, et al. Vol. 3: 1920-1929. Detroit: Gale, 2001. Gale Virtual Reference Library. Web. 1 Oct. 2015.

Quote

“Jiggle a collection of electrons up and down one million times a second and a 1-megahertz radio signal will be created. Change the vibration frequency and the frequency of the radio signal will change.”

This quote shows how a radio signal is transmitted to another radio it is transmitted using electromagnetism and vibration frequency.

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“The first commercial radio station was started by Dr. Frank Conrad, an engineer with Westinghouse in East Pittsburgh, Pennsylvania.”  

The first radio station was created in the city we live in and is now known as KDKA.

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Pictures