File:Tesla discharge through boys body.jpg
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Size of this preview: 435 × 600 pixels. Other resolutions: 174 × 240 pixels | 348 × 480 pixels | 697 × 961 pixels.
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Summary[edit]
| Description |
English: Time exposure photo of a student conducting a discharge through his body from a Tesla coil, of a type known at the time as an Oudin coil, at Los Angeles Polytechnic High School around 1909. The arcs are 16 inches (41 cm) long, corresponding to a voltage of around 200kV. The subject doesn't feel a shock and is apparently unharmed. It was believed until recently that this was due to skin effect: the high frequency current doesn't penetrate into the body but travels along the skin, so it cannot cause electrocution, only skin burns. The student uses a metal rod to avoid skin burns. However, it is now thought that Tesla coil discharges can travel through the interior of the body, causing damage, and the subject doesn't feel a shock because the nerve cells are not sensitive to these high frequency currents. Therefore THIS EXPERIMENT IS EXTREMELY DANGEROUS AND CAN RESULT IN ELECTROCUTION. DON'T TRY IT. Alterations to image: removed caption, which read: "Taking a 16 inch discharge into the body from the Oudin resonator. Exposed 10 seconds." |
| Date | |
| Source | Downloaded from Harry La Verne Twining (July 1, 1909) Wireless Telegraphy and High Frequency Electricity, self published, Los Angeles, USA, p.54, plate 3 on Google Books |
| Author | Harry La Verne Twining |
| Permission (Reusing this file) |
Public domain - published in USA prior to 1923 |
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Safety warningThis file depicts potentially dangerous activities. Wikimedia Commons is not responsible for any consequence resulting from the use of its files; see Commons:General disclaimer for more information. |
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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 | |
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| current | 20:29, 21 May 2008 | | 697 × 961 (179 KB) | Chetvorno (talk | contribs) | == Summary == {{Information |Description=Time exposure photo of a student conducting a discharge through his body from a Tesla coil, of a type known at the time as an Oudin coil, at Los Angeles Polytechnic |
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