File:Tesla Colorado Springs lab-12 million volts.jpg
Tesla_Colorado_Springs_lab-12_million_volts.jpg (600 × 446 pixels, file size: 67 KB, MIME type: image/jpeg)
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Summary
DescriptionTesla Colorado Springs lab-12 million volts.jpg |
English: Nikola Teslas magnifying transmitter, a huge Tesla coil, in operation at his Colorado Springs laboratory in 1899-1900. Part of a photo shoot by photographer Dickenson V. Alley to accompany Tesla's June 1900 article in Century Magazine, "The Problem of Increasing Human Energy". The apparatus consisted of a 60 foot diameter Tesla transformer around the periphery of the room consisting of a one-turn primary winding and a 50 turn secondary wound on a 8 ft high wooden "fence" around the room (visible dimly in the background). The primary was connected to a bank of 13 oil capacitors and excited by current from a 20 to 40 kV step-up transformer from the power line through a rotary spark-gap interrupter. One end of the secondary winding was grounded and the other end was connected to the 20 ft diameter 100 turn coil in the center of the picture, called the "extra" or "resonator" coil. This third coil is not magnetically coupled with the others and produced the high voltage output by resonance with its own parasitic capacitance. The high voltage terminal at the top of the coil is attached to a vertical telescoping boom with a 30 inch metal sphere at the top which could be raised into the sky through a hatch in the roof. Note the luminous corona discharge visible along the wire connecting the secondary winding with the resonator coil, left. The accompanying text in the Cohen article said:
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Author | Dickenson V. Alley, Century Magazine photographer |
Licensing
Public domainPublic domainfalsefalse |
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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Items portrayed in this file
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November 1917Gregorian
image/jpeg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:02, 4 April 2015 | 600 × 446 (67 KB) | Chetvorno | User created page with UploadWizard |
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