File:Singer broadcasting using a glow transmitter - St. Nicholas Magazine.jpg
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Singer_broadcasting_using_a_glow_transmitter_-_St._Nicholas_Magazine.jpg (419 × 486 pixels, file size: 53 KB, MIME type: image/jpeg)
Captions
Captions
A singer broadcasting by means of a glow transmitter. Taken by Westinghouse.
Summary[edit]
| Description |
English: Singer uses Dr. Phillip Thomas' invention, the glow transmitter, to broadcast voice. 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]
|
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. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:01, 2 December 2022 | | 419 × 486 (53 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 |
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