Radio's History
1830s - Michael Faraday and Joseph Henry discover that currents can be produced in two non-connected wires.
Tikalon Blog by Dev Gualteri. http://tikalon.com/blog/blog.php?article=2012/nanocable
Tikalon Blog by Dev Gualteri. http://tikalon.com/blog/blog.php?article=2012/nanocable
1864 - James Clerk Maxwell reinforces the discovery by suggesting that electromagnetic waves travel at the speed of light.
James Clerk Maxwell (1831-1879) - Find A Grave Memorial. http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=16871396
James Clerk Maxwell (1831-1879) - Find A Grave Memorial. http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=16871396
1891 - Nikola Tesla invents the Tesla coil, a transformer that becomes an important part of radio transmission.
Tesla Memorial Society of New York. http://www.teslasociety.com (also below)
Tesla Memorial Society of New York. http://www.teslasociety.com (also below)
1895 - Guglielmo Marconi uses wireless waves to transmit Morse Code, becoming the first radio communication signal sent through the air.
http://images.google.com/hosted/life/4a204d82f07524bd.html
http://images.google.com/hosted/life/4a204d82f07524bd.html
1901 - Marconi sends the first transatlantic signals from England to Canada.
Memorial University of Newfoundland. http://www.ucs.mun.ca/~jcraig/marconi.html
Memorial University of Newfoundland. http://www.ucs.mun.ca/~jcraig/marconi.html
Cabot Tower at Signal Hill in Newfoundland, where the first signals were received.
http://www.vintag.es/2012/09/old-photographs-of-canada-from-1858-1935.html
http://www.vintag.es/2012/09/old-photographs-of-canada-from-1858-1935.html
1903 - A Marconi radio based in Massachusetts is used to exchange greetings between President Teddy Roosevelt and King Edward VII of England.
http://www.manfrommars.com/marconi.html
http://www.manfrommars.com/marconi.html
1906 - Reginald A. Fessenden is recognized by most historians as giving the first radio broadcast of human speech by speaking to ships in the Atlantic.
http://www.fessenden.ca/fessenden.htm
Arcane Radio Trivia. http://tenwatts.blogspot.com/2010/09/archie-and-history-of-electronics.html (below)
http://www.fessenden.ca/fessenden.htm
Arcane Radio Trivia. http://tenwatts.blogspot.com/2010/09/archie-and-history-of-electronics.html (below)
1909 - The Polar explorer Robert E. Peary transmits by radio his discovery of the North Pole. "Stars and stripes nailed to North pole," this telegram reads.
Radio is used to execute the first sea rescue in the Atlantic.
New York Times. http://i2.cdn.turner.com/cnn/dam/assets/130712163118-3404423-10-horizontal-gallery.jpg
Radio is used to execute the first sea rescue in the Atlantic.
New York Times. http://i2.cdn.turner.com/cnn/dam/assets/130712163118-3404423-10-horizontal-gallery.jpg
1920 - Station KDKA in Pittsburgh, one of the first commercial radio stations, broadcasts the results of the U.S. presidential election, marking the start of professional broadcasting.
ExplorePAHistory.com. http://explorepahistory.com/displayimage.php?imgId=1-2-19F2
ExplorePAHistory.com. http://explorepahistory.com/displayimage.php?imgId=1-2-19F2
1930s - Radio is used by airplane pilots, police, and the military for wireless communication.
Hammond Museum of Radio. http://www.weiwong.com/post/hammond-museum-of-radio
Hammond Museum of Radio. http://www.weiwong.com/post/hammond-museum-of-radio
1938 - The War of the Worlds is broadcast by Orson Welles.
The Skeptical Teacher. http://skepticalteacher.wordpress.com/2010/10/31/a-historical-halloween-skepticism-lesson-the-1938-war-of-the-worlds-broadcast-by-orson-welles/
The Skeptical Teacher. http://skepticalteacher.wordpress.com/2010/10/31/a-historical-halloween-skepticism-lesson-the-1938-war-of-the-worlds-broadcast-by-orson-welles/
1939-1945 - Millions of people listen to radio for news updates on World War II.
Governments of the countries involved in the war use radio for propaganda purposes.
During this time, FDR addresses his policies to the American public through radio with his fireside chats. Other important leaders like Churchill and de Gaulle follow suit.
http://radioworldwar2nhd.weebly.com/fireside-chats.html
http://catalog.flatworldknowledge.com/bookhub/reader/3833?e=lulemedia_1.0-ch07_s03 (below)
Governments of the countries involved in the war use radio for propaganda purposes.
During this time, FDR addresses his policies to the American public through radio with his fireside chats. Other important leaders like Churchill and de Gaulle follow suit.
http://radioworldwar2nhd.weebly.com/fireside-chats.html
http://catalog.flatworldknowledge.com/bookhub/reader/3833?e=lulemedia_1.0-ch07_s03 (below)
Sources:
“Radio.” World Book. 2006. Print
Settel, Irving. A Pictorial History of Radio. Canada: Grosset & Dunlap, 1960.
“Radio.” World Book. 2006. Print
Settel, Irving. A Pictorial History of Radio. Canada: Grosset & Dunlap, 1960.