Search Results
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2 itemsLetter from Lee de Forest to Arnold O. Beckman
- 1936-Jul-02
Lee de Forest discusses testing Beckman's film-coating process with antimony. A sample of antimony paper is included.
- Addressee Beckman, Arnold O.
- Author De Forest, Lee, 1873-1961
- Subject Antimony, Metal coating
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Letter from Lee de Forest to Arnold O. Beckman
- 1931-Sep-09
The letter requests deliverables of 100 feet of silvered film, and two 10 foot pieces with a silver coating on emulsion film and clear stock.
Lee de Forest (1873–1961) was an inventor, most notably of Audion vacuum…
- Addressee Beckman, Arnold O.
- Author De Forest, Lee, 1873-1961
- Subject Silver films (Metal coating), Silvering
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2 itemsLetter from Lee de Forest to Arnold O. Beckman
- 1931-Oct-22
De 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…
- Addressee Beckman, Arnold O.
- Author De Forest, Lee, 1873-1961
- Subject Silver films (Metal coating), Silvering, Celluloid
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Letter from Lee de Forest to Arnold O. Beckman
- 1931-Oct-09
The letter discusses the "very nice results" of using new Eastman film and queries as to the possible effects of light upon silvering solution.
Lee de Forest (1873–1961) was an inventor, most notably of Audion vacuum…
- Addressee Beckman, Arnold O.
- Author De Forest, Lee, 1873-1961
- Subject Silver films (Metal coating), Silvering, Celluloid
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Letter from Lee de Forest to the Dean of Chemistry at Caltech
- 1931-Jul-15
In this letter, Lee de Forest requests a referral to a chemist who might help electroplate film.
Lee de Forest (1873–1961) was an inventor, most notably of Audion vacuum tubes in the early twentieth century. His serial…
- Author De Forest, Lee, 1873-1961
- Subject Celluloid, Electroplating
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Letter from Lee de Forest to Arnold O. Beckman
- 1931-Nov-09
In this letter, de Forest proposes a process that could replace halftone film.
Lee de Forest (1873–1961) was an inventor, most notably of Audion vacuum tubes in the early twentieth century. His serial business ventures…
- Addressee Beckman, Arnold O.
- Author De Forest, Lee, 1873-1961
- Subject Photoengraving--Halftone process