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Sir James Dewar Greetings Card

Regular price £4.00

Blank greetings card with envelope featuring:

Sir James Dewar NPG 2118

© National Portrait Gallery, London

by Carmelo Cernigliari-Melilli

A physicist whose study of low-temperature phenomena included the use of a double-walled vacuum flask of his own design that has been named after him. He was also the first person to liquefy and solidify hydrogen gas. Dewar was appointed professor at the University of Cambridge in 1875 and at the Royal Institution two years later. He held both posts throughout his life. In around 1892 he came up with the idea of using vacuum-jacketed vessels for the storage of low-temperature liquid gases. The resulting... more

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Size: 125mm x 175mm

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