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Gas & Pressure Experiments Metal Dewar vacuum flask, early 20th century

IMAGE number
UIS5069473
Image title
Gas & Pressure Experiments Metal Dewar vacuum flask, early 20th century
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Location
Science Museum, London, UK
Medium
object
Image description

Gas & Pressure Experiments Metal Dewar vacuum flask, early 20th century. Reproduction. The vacuum flask was invented by the Scottish physicist James Dewar (1842-1923). This is a reproduction of one of Dewar's experimental flasks that has been cross-sectioned to reveal the inside. The flask contains a partial vacuum between its walls that greatly reduces conduction. A perfect vacuum contains no matter and therefore does not conduct heat. The flask is closed to maintain the vacuum and prevent convection, the transfer of heat by air circulation. ©SSPL/Science Museum

Photo credit
SSPL/UIG / Bridgeman Images
Image keywords
20th century / Science / tool / thing / 1900's / 1910's / cross section / experiment / gas / air / emptiness / physics / photography

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Largest available format 2946 × 3504 px 1 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB] Online Purchase
Large 2946 × 3504 px 249 × 297 mm 901 KB
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