File:Nikola Tesla, with his equipment Wellcome M0014782 - restoration2.jpg
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[editar]English: Nikola Tesla, with his equipment (restored version) | |
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Título |
English: Nikola Tesla, with his equipment (restored version) |
Descripción |
English: Famous photograph of Serbian-American inventor Nikola Tesla in his laboratory in Colorado Springs around 1899, supposedly sitting reading next to his giant "magnifying transmitter" high voltage generator while the machine produced huge bolts of electricity. The photo was a promotional stunt by photographer Dickenson V. Alley; a double exposure. First the machine's huge sparks were photographed in the darkened room, then the photographic plate was exposed again with the machine off and Tesla sitting in the chair. In his Colorado Springs Notes Tesla admitted that the photo is false:
Tesla's biographers Carl Willis and Mark Seifer confirm this. During 1899-1900 Tesla built this laboratory and researched wireless transmission of electric power there. The Magnifying Transmitter, one of the largest Tesla coils ever built, with input power of 300 kW could produce potentials of around 12 million volts at a frequency of about 150 kHz, creating 130 ft. (41 m) "lightning bolts". The arcs in the image are 22 feet long. When he first turned it on, the machine blew out the Colorado Springs power company's generator. These long arcs were not a feature of the normal operation of the coil because they wasted energy; for these photos Tesla forced the machine to produce arcs by switching the power rapidly on and off.The photo was part of a publicity spread taken by photographer Dickinson Alley in December 1899 to accompany his magazine article Nikola Tesla, "The Problem of Increasing Human Energy", Century Magazine, The Century Co., New York, June 1900, fig. 8; a version without Tesla appears in the article. The note accompanying the image: "Fig. 8 - The coil, partly shown in the photograph, creates an alternative movement of electricity from the earth into a large reservoir and back at a rate of one hundred thousand alternations per second. The adjustments are such that the reservoir is filled full and bursts at each alternation just at the moment when the electrical pressure is maximum. The discharge escapes with a deafening noise striking at an unconnected coil twenty two feet away, and creating such a commotion of electricity in the earth that sparks an inch long can be drawn from a water main at a distance of three hundred feet from the laboratory. This copy was sent to British physicist William Crookes, and is inscribed: 'To my illustrious friend Sir William Crookes of whom I always think and whose kind letters I never answer! Nikola Tesla June 17, 1901' Wellcome Images |
Fecha |
hacia 1899 date QS:P571,+1899-00-00T00:00:00Z/9,P1480,Q5727902 |
Referencias |
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Fuente/fotógrafo |
https://wellcomeimages.org/indexplus/obf_images/4c/6e/da5709a57832dbbb048ba4a17fe6.jpg
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Permiso (Reutilización de este archivo) |
CC-BY-4.0 [1] |
Otras versiones |
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Esta es una imagen retocada, lo que significa que ha sido alterada digitalmente de su versión original. Modificaciones: image restoration (removed the more obvious small defects), removed Tesla's hand written inscription. La original se puede ver aquí: Nikola Tesla, with his equipment Wellcome M0014782.jpg. Las modificaciones las hizo Bammesk.
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actual | 17:07 6 mar 2022 | ![]() | 7441 × 5619 (21,94 MB) | Bammesk (discusión | contribs.) | Uploaded a work by Dickenson V. Alley from https://commons.wikimedia.org/wiki/File:Nikola_Tesla,_with_his_equipment_Wellcome_M0014782.jpg with UploadWizard |
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- Wikipedia:WikiProject Physics
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Autor | Wellcome Library, London |
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Título de la imagen | M0014782 Nikola Tesla, with his equipment
Credit: Wellcome Library, London. Wellcome Images images@wellcome.ac.uk http://wellcomeimages.org Nikola Tesla, with his equipment for producing high-frequency alternating currents. Inscribed: 'To my illustrious friend Sir William Crookes of whom I always think and whose kind letters I never answer! Nikola Tesla June 17, 1901' Photograph 1901 Published: - Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0 http://creativecommons.org/licenses/by/4.0/ |
Titular de los derechos de autor | Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0 http://creativecommons.org/licenses/by/4.0/ |
Fecha y hora de la generación de los datos | 00:00 6 mar 2022 |
Encabezado | M0014782 Nikola Tesla, with his equipment |
Título breve | M0014782 Nikola Tesla, with his equipment |
Resolución horizontal | 300 ppp |
Resolución vertical | 300 ppp |
Software usado | GIMP 2.10.8 |
Fecha y hora de modificación del archivo | 11:51 6 mar 2022 |
Versión IIM | 2 |