File:Nikola Tesla's Egg of Columbus at 1893 Chicago Columbian Exposition World's Fair.png
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Summary
| Description |
English: Nikola Tesla's "Egg of Columbus", a device used by the inventor to demonstrate the rotating magnetic field that drove his new alternating current induction motor by using that magnetic field to spin a copper egg on end. |
| Date | |
| Source | https://www.lab-tesla.org/egg.html |
| Author | Unknown author |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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Detail of this photograph.
Licensing
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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, 1930.
 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. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:52, 27 March 2020 | | 1,800 × 1,445 (1.35 MB) | Fountains of Bryn Mawr | Uploaded a work by unknown from https://www.lab-tesla.org/egg.html with UploadWizard |
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