File:Glow Transmitter - Dr. Phillips Thomas - St. Nicholas Magazine.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Glow_Transmitter_-_Dr._Phillips_Thomas_-_St._Nicholas_Magazine.jpg ‎(419 × 573 pixels, file size: 65 KB, MIME type: image/jpeg)

Captions

Captions

A view of the complete glow transmitter, showing connections for broadcasting. Taken by Westinghouse

Summary

[edit]
Description
English: A close-up of the glow transmitter mechanism invented by Dr. Phillips Thomas (according to the caption of another image featured in article). Surrounding text reads (in part): "Another type of thermo-microphone has also been put to successful use—the glow transmitter developed by Dr. Phillips Thomas, of the Westinghouse Research Laboratories. Dr. Thomas has demonstrated that a high-pressure, low-current electrical discharge between two electrodes in air may be modulated by sound impulses striking upon it."
Date
Source https://archive.org/details/st.-nicholas-v-50-n-12-1923-10-sas/page/1274/mode/2up
Author Various

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:Glow_Transmitter_-_Dr._Phillips_Thomas_-_St._Nicholas_Magazine.jpg

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current17:01, 2 December 2022Thumbnail for version as of 17:01, 2 December 2022419 × 573 (65 KB)LiteralHorses (talk | contribs)Uploaded a work by Various from https://archive.org/details/st.-nicholas-v-50-n-12-1923-10-sas/page/1274/mode/2up with UploadWizard

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Glow_Transmitter_-_Dr._Phillips_Thomas_-_St._Nicholas_Magazine.jpg&oldid=711882820"