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Maxwell’s Equations, 1860-1871
Radio Inquiry Unit - Supporting Questions 1A IEEE Milestone's: Maxwell's Equations, 1860-1871 Visit Source Download PDF…
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Lines and Waves – Faraday, Maxwell, and 150 Years of Electromagnetism
Radio Inquiry Unit | Information Theory Inquiry Unit
An Exhibit by the IEEE History Center (1981) Written by Robert D. Friedel “It was 150 years ago that the English scientist Michael Faraday discovered that he could generate electricity with magnet…
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President Franklin Roosevelt’s Fireside Chats
Radio Inquiry Unit - Supporting Question 4 Photo: FDR [Franklin Delano Roosevelt] FIRESIDE CHAT https://www.loc.gov/item/2016883684/ Accessed: 12 June 2017 “While developing programs to help…
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Electric Waves by Dr. Heinrich Hertz, 1857-1894
Radio Inquiry Unit Electric Waves, Being Researches on the Propagation of Electric Action with Finite Velocity Through Space, by Dr. Heinrich Hertz, 1857-1894. The English translation of Hertz…
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Wireless Telegraphic Communications, Guglielmo Marconi Nobel Prize Lecture, December 11, 1901
Radio Inquiry Unit | Information Theory Inquiry Unit
In 1909, Guglielmo Marconi was awarded the Nobel Prize for his contribution to the development of wireless telegraphy. Here you will find a link to the lecture, which includes Marconi’s explanation …
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David Sarnoff Diary Entry, 3/26/1911
Radio Inquiry Unit - Supporting Question 2C "Page from David Sarnoff’s diary on board the Job Brothers’ sealhunting ship, the Beothic, in which he describes his relaying the dialogue between th…
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Magnavox Radio Phonograph Ad
Radio Inquiry Unit Magnavox radio phonograph ad, 1946, David Sarnoff Library Download PDF…
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Radio Enters the Home
Radio Inquiry Unit - Staging the Question RCA instruction book and catalog, 1922, David Sarnoff Library Download PDF…
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The Lone Ranger Show
Radio Inquiry Unit – Classroom Activity Listen to the Lone Ranger radio show from the 1930’s found on archive.org. Just click on the play button below to listen or use the “Visit Source” butt…
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Photographs of David Sarnoff
Radio Inquiry Unit - Supporting Question 2 David Sarnoff began his career at the Marconi Wireless Telegraph Company of America as an office boy in 1906. He went on to become a trailblazer in the ra…
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Biography of Guglielmo Marconi
Radio Inquiry Unit IEEE Biography of Guglielmo Marconi "Marconi was born in Italy in 1874 to Giuseppe and Annie Jameson Marconi. His father was a prosperous Italian landowner and his mother was…
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Biography of David Sarnoff
IEEE Biography of David Sarnoff Radio Inquiry Unit "Sarnoff was born on 27 February 1891, the oldest of five children, outside Minsk in imperial Russia. He and his family immigrated to the Unite…
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Laboratory notebook, recording Edwin H. Armstrong’s discovery of superheterodyne reception
Radio Inquiry Unit From the Rare Book & Manuscript Library, Columbia University Visit Source Download PDF …
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Edwin H. Armstrong, of Yonkers, NY Wireless Receiving System, Patent # 1,113,149. Application Filed Oct. 29, 1913 – Patented Oct. 6, 1914
Radio Inquiry Unit According to the E.H. Armstrong, wireless receiving system patent, “The present invention relates to improvements in the arrangement and connections o…
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Edwin H. Armstrong, of Paris, France Method of Receiving High-Frequency Oscillations Patent # 1,342,885 Application filed Feb. 8, 1919 – Patented June 8, 1920
Radio Inquiry Unit While serving in the U.S. Army during World War I, Armstrong synthesized three ideas to create his superheterodyne circuit for selectively amplifying a very high fr…
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