Light Through The Ages

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Light Through The Ages

Electric Lighting Inquiry Unit

Download PDF Visit Source Promotional literature for the Westinghouse Electric Co.…

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Inventor Lewis Latimer Biography and Patent

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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 …

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Portrait of Hertha Marks Ayrton

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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…

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A Pre-History of Radio (Part One)

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…

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A Pre-History of Radio (Part Two)

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 …

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Radio

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…

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President Franklin Roosevelt’s Fireside Chats

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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…

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David Sarnoff Diary Entry, 3/26/1911

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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…

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Biography of David Sarnoff

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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…

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