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File:Davisson and Germer.jpg

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Davisson_and_Germer.jpg (334 × 339 pixels, file size: 24 KB, MIME type: image/jpeg)

Summary

Description
English: Clinton Joseph Davisson (left; 1881-1958) and Lester Halbert Germer (right; 1896-1971) in 1927, physicists who performed the Davisson-Germer experiment in 1923-1927 at Bell Labs, that demonstrated the wave nature of matter theorized by Louis de Broglie in 1924.
Date first published in 1927
Source Appears in Electronics magazine, McGraw-Hill Co., New York, Vol.8, No.9, September 1935, p.25 without attribution. This publication's copyright would have been renewed in 1963. The Online Books record of copyright renewals for Electronics lists no renewals. Therefore it was not renewed and is in the public domain
Author Unknown

Licensing

This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art.

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Public domain
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs.

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Captions

Clinton Davisson and Lester Germer, of the Davisson-Germer experiment

Items portrayed in this file

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image/jpeg

11233790ce461fed2b1d3a5ac96ebe88cb9ee9da

24,602 byte

339 pixel

334 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current10:13, 17 February 2006Thumbnail for version as of 10:13, 17 February 2006334 × 339 (24 KB)ElectronClinton Joseph Davisson (left; 1881-1958) and Lester Halbert Germer (right; 1896-1971) in 1927. Author unknown, the photo was the first published in 1927 (more then 70-ty years ago)

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