Primary Source
Light Through The Ages
Electric Lighting Inquiry Unit
Download PDF Visit Source Promotional literature for the Westinghouse Electric Co.…
Learn moreFilter Results
Primary Source
Inventor Lewis Latimer Biography and Patent
Electric Lighting Inquiry Unit
Download PDF Visit Source 1 Visit Source 2 "Lewis Howard Latimer (1848-1928)...attended only grade school, and the remainder of his education was self-taught...He had a fabulous appetite for …
Learn more
Primary Source
Portrait of Hertha Marks Ayrton
Electric Lighting Inquiry Unit
Download PDF Visit Source 1 Visit Source 2 Hertha Marks Ayrton was a British engineer, mathematician, physicist and inventor. She was the first woman elected member of The Institution of Ele…
Learn more
Multimedia
A Pre-History of Radio (Part One)
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…
Learn more
Multimedia
A Pre-History of Radio (Part Two)
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 …
Learn more
Multimedia
1920’s Frequency “Tune-In” and In-Home Entertainment
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…
Learn more
Inquiry Unit
Radio
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…
Learn more
Primary Source
President Franklin Roosevelt’s Fireside Chats
Radio Inquiry Unit
Radio Inquiry Unit - Supporting Question 4 “While developing programs to help America emerge from the Great Depression, Roosevelt also needed to calm the fears and restore the confidence of Ameri…
Learn more
Primary Source
David Sarnoff Diary Entry, 3/26/1911
Radio Inquiry Unit
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…
Learn more
Primary Source
Biography of David Sarnoff
Radio Inquiry Unit
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…
Learn more
