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Electrical Apparatus Armstrong's hydro-electric machine, 1845

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UIS5061525
Image title
Electrical Apparatus Armstrong's hydro-electric machine, 1845
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Location
Science Museum, London, UK
Medium
object
Image description

Electrical Apparatus Armstrong's hydro-electric machine, 1845. This machine was presented to the British physicist Michael Faraday by Sir William Armstrong (1810-1900). Armstrong's machine consisted ofÊ an insulated boiler filled with distilled water, which produces high pressure steam that escapes through a row of jets after being partly condensed by passing through pipes surrounded by cold water. The droplets strike a plate around which the steam has to pass before it escapes from the jets. This develops electricity in proportion to the increase of the pressure of the steam; the jets become positively charged and the steam negatively. The machines were very powerful, but difficult to use. A 46-jet version at the London Polytechnic produced sparks two feet long. Made by H Watson, Newcastle-upon-Tyne. ©SSPL/Science Museum

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SSPL/UIG / Bridgeman Images
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