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Electronic Music Inquiry Unit
Thaddeus Cahill's Patent: Art of and Apparatus For Generating and Distributing Music Electronically This document includes all ten photos from the Thaddeus Cahill patent and some of the written doc…
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Radio Inquiry Unit
Join historian Alex Magoun on a journey through the history of radio technology from James Clark Maxwell’s theory of electromagnetism to Guglielmo Marconi's use of that theory in long-distance radio…
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Multimedia
Radio Inquiry Unit
Continue on the historical journey of the radio industry with historian Alex Magoun as he goes back in time and shares how engineers and scientists improved wireless telegraphy from Morse code to the …
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Multimedia
Radio Inquiry Unit
Listen in as radio expert Al Klase of the New Jersey Antique Radio Club explains the effects radio had on society and culture in the 1920s and watch as he demonstrates and tunes in a station on an aut…
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Multimedia
Radio Inquiry Unit
This video explores the beginnings of broadcast radio in the home, thanks to Pittsburgh’s KDKA radio station and Westinghouse, which made radio receivers. The electromagnetic “magic†found in sm…
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Multimedia
Radio Inquiry Unit
Like game consoles and smartphones today, radios in the 1920s were expensive. Fortunately for teens back then, they could build radio receivers using cheap parts found at home and hardware stores. Wat…
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Inquiry Unit
The invention of wireless telegraphy-radio-at the end of the 19th century by Marconi and others made it possible to communicate with anyone, anywhere, around the globe. It soon became apparent, howeve…
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Radio Inquiry Unit
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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Radio Inquiry Unit
Radio 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 Marc…
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Radio Inquiry Unit
Radio Inquiry Unit Magnavox radio phonograph ad, 1946, David Sarnoff Library Download PDF…
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