Peter Cooper Hewitt (1861-1921), US Electrical Engineer. Hewitt erfand eine quecksilberdampflampe (patentiert 1901) und baute die ersten Mercury arc beseitigen

• Bildanbieter: Science Photo Library / Alamy Stock Foto
• Bild-ID: 2ACR2ED
• Dateigröße: 25 MB (636,2 KB Komprimierter Download)
• Freigaben (Releases): Model - nein | Eigentum - nein
• Format: 2575 x 3388 px | 21,8 x 28,7 cm | 8,6 x 11,3 inches | 300dpi
• Aufnahmedatum: 15. August 2013
• Fotograf: MIRIAM AND IRA D. WALLACH DIVISION OF ART, PRINTS AND PHOTOGRAPHS/NEW YORK PUBLIC LIBRARY/SCIENCE PHOTO LIBRARY

Weitere Informationen

Peter Cooper Hewitt (1861-1921), US electrical engineer. Hewitt invented a mercury-vapour lamp (patented 1901) and built the first mercury arc rectifier (1902). Early models of the lamp were a thin tube with a pool of mercury filling the lamp with mercury vapour. Current flowing between electrodes and through the mercury vapour discharged a bluish-green light. The mercury arc rectifier, used to convert alternating current to direct current, was used in industry and on the railways. This signed 1918 photograph is from a collection of unpublished images obtained for 'The Pageant of America: A Pictorial History of the United States' (1925-1929).

Stockbilder mithilfe von Tags suchen

• 21 jahrhundert
• astronomie
• astronomische
• bassin
• cololour
• compositie
• ehemann hill
• erkundung
• geist
• gipfel
• horizon
• inneres
• krater
• landegerät
• landscapre
• machine
• mars
• marsmensch
• mccool
• november 2005
• oberfläche
• panorama
• planeet
• planetary science
• ramon
• seminole
• trut
• vagabund