Letter from Lee de Forest to Arnold O. Beckman
- 1931-Oct-22
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Small JPG800 x 1016px — 134 KBMedium JPG1200 x 1524px — 282 KBFull-sized JPG2769 x 3517px — 1.4 MBOriginal fileTIFF — 2769 x 3517px — 27.9 MBDe Forest inquires about Beckman's progress toward a chemical coating that might change in opacity or color, and details the "very fine and uniform quality" of silver coated film de Forest is able to produce.
Lee de Forest (1873–1961) was an inventor, most notably of Audion vacuum tubes in the early twentieth century. His serial business ventures included work in radio, telegraphy, telephony, broadcasting, and film.
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Forest, Lee De. “Letter from Lee De Forest to Arnold O. Beckman,” October 22, 1931. Beckman Historical Collection, Box 1, Folder 17. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/j9602142v.
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