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Summary
| Description |
English: An early example of an incandescent light powered wirelessly by electromagnetic induction, in 1910. The large cylinder, bottom consists of an electromagnet, a coil of wire with alternating current through it. It creates an alternating magnetic field. The lamp is attached to another coil of wire, which is held above the magnet's pole. The time varying magnetic field induces an alternating current in the second coil, which lights the lamp. The lamp appears to be an original Edison lamp with a carbon filament. |
| Date | |
| Source | Retrieved March 3, 2015 from Elmer Ellesworth Burns (1910) The Story of Great Inventions, Harper and Brothers, New York, p. 229, fig. 114 on Google Books |
| Author | Elmer Ellesworth Burns |
Licensing
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:26, 4 May 2015 | | 672 × 650 (73 KB) | Chetvorno | {{Information |Description ={{en|1=An example of an W:incandescent light powered wirelessly by W:electromagnetic induction, in 1910. The large cylinder, bottom consists of an W:electromagnet, a coil of wire with [[W:alternating curre... |
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