File:Tesla_colorado_adjusted.jpg
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Summary
DescriptionTesla colorado adjusted.jpg |
English: Publicity photo of Serbian-American inventor Nikola Tesla in December 1899 sitting in his laboratory in Colorado Springs next to his magnifying transmitter high voltage generator while the machine produced huge bolts of electricity.
This image was created by Century Magazine photographer Dickenson V. Alley using "trick photography" via a double exposure. The electrical bolts were photographed in a darkened room. The photographic plate was exposed a second time with the equipment off and Tesla sitting in the chair. In his Colorado Springs Notes Tesla admitted the photo was a double exposure:
and this is confirmed by Tesla biographers Carl Willis and Marc Seifer. In 1899-1900 Tesla built the laboratory and researched wireless electric power transmission there. The "magnifying transmitter", one of the largest Tesla coils ever built, with an input power of 300 kW generated voltages on the order of 12 million volts at frequencies around 150 kHz, producing 140 ft. (41 m) "lightning" bolts. |
Date | |
Source |
en:Image:Tesla colorado 444px.jpg 2005-10-19 02:27:48 Conversely a copy of the original photograph was collected by Leland I. Anderson who sold the collection to Tesla Wardenclyffe Project. They now claim copyright. Note that the version in that archive includes a hand written note added in 1901 printing which doesn't appear on the more widely available image. The unretouched image, without Tesla, appears in Nikola Tesla, "The Problem of Increasing Human Energy", Century Magazine, The Century Co., New York, June 1900, fig. 8 |
Author | Dickenson V. Alley, photographer, Century Magazine |
Other versions |
Nikola Tesla in laboratorul sau din Colorado Springs.jpg |
Licensing
Public domainPublic domainfalsefalse |
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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, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Tesla_colorado_adjusted.jpg |
Captions
Items portrayed in this file
depicts
December 1899Gregorian
image/jpeg
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:17, 6 November 2011 | ![]() | 900 × 698 (318 KB) | Tholme | Higher quality |
20:48, 2 February 2007 | ![]() | 826 × 664 (193 KB) | Skies | == Summary == Publicity photo of a participant sitting in Nikola Tesla's laboratory in Colorado Springs circa 1900. The laboratory was built in 1899. Tesla sent a copy of this photograph to Sir William Crookes in England in 1901. This image i |
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | ACD Systems Digital Imaging |
File change date and time | 22:12, 26 March 2011 |
Y and C positioning | Centered |
DateTime subseconds | 668 |