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Electrical Apparatus Fleming diode, British, 1905

IMAGE number
UIS5066528
Image title
Electrical Apparatus Fleming diode, British, 1905
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Location
Science Museum, London, UK
Medium
object
Image description

Electrical Apparatus Fleming diode, British, 1905. This electronic diode was one of Sir John Ambrose Fleming's (1849-1945) own valves or vacuum tubes of the type used with the pioneering Marconi-Fleming radio receiver. The diode rectifies high frequency oscillations, that is, it converts them from alternating to direct current. The glass bulb has a high vacuum inside and contains a carbon filament surrounded by an aluminium tube open at both ends. Fleming invented the thermionic valve and pioneered the use of electricity for light and heat on a large scale. ©SSPL/Science Museum

Photo credit
SSPL/UIG / Bridgeman Images
Image keywords
20th century / Science / accessory / england english / 1900's / electricity / great britain - british / tool / invention / thing / photography / physics

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Largest available format 2770 × 3504 px 1 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB] Online Purchase
Large 2770 × 3504 px 235 × 297 mm 889 KB
Medium 810 × 1024 px 69 × 87 mm 644 KB

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