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File:Ernst Alexanderson (1920).jpg

Ernst_Alexanderson_(1920).jpg ‎(314 × 442 pixels, file size: 55 KB, MIME type: image/jpeg)

Captions

Captions

Photograph of Ernst Alexanderson, circa 1920

Summary edit

Description
English: In 1920 Ernst Alexanderson was the Chief Engineer of the Radio Corporation of America. He is best known for the development of the Alexanderson Alternator radio transmitter.
Date
Source Photograph included with the article "The March of Science", on page 266.of the May 1920 issue of The New York Times Current History magazine
Author None listed

Licensing edit

Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Ernst_Alexanderson_(1920).jpg

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current21:29, 30 December 2021Thumbnail for version as of 21:29, 30 December 2021314 × 442 (55 KB)Thomas H. White (talk | contribs)Uploaded a work by None listed from Photograph included with the article "The March of Science", on page 266.of the May 1920 issue of The New York Times Current History magazine with UploadWizard

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