Records (Documents)

Patent for Electronic Light Amplifier

  • 1952-Apr-29

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U.S. Patent 2,594,740, filed on behalf of Lee de Forest and William A. Rhodes, describes a device for amplifying the intensity of radiation.

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.

Property Value
Creator of work
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Extent
  • 7.75 in. W x 11.5 in. L
Language
Inscription
  • (first page, lower left) "100 kv β-rays are essentially absorbed in 2 mm of light material (plastics) .002 mm would absorb 100 V electrons"
  • (page 5, column 7, left margin) "!!"
  • (page 5, column 8, right margin) "good"
Subject
Rights Public Domain Mark 1.0
Credit line
  • Courtesy of Science History Institute

Physical location

Department
Collection
Series arrangement
  • Series I. Arnold O. Beckman Files
  • Sub-series 1. Correspondence
Physical container
  • Box 1, Folder 18
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Cite as

Forest, Lee De, and William A. Rhodes. “Patent for Electronic Light Amplifier,” April 29, 1952. Beckman Historical Collection, Box 1, Folder 18. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/2227mq412.

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