Portrait of the Scottish chemist Sir James Dewar

Portrait of the Scottish chemist Sir James Dewar

H404/0225 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 50.0MB

Downloadable file size: 2.5MB

Price image Pricing

Please login to use the price calculator



Caption: James Dewar. Portrait of the Scottish chemist Sir James Dewar (1842-1923). In 1875 he became a professor at Cambridge University, England, and, two years later, at the Royal Institution in London. He invented the Dewar flask (known domest- ically as the thermos flask) and used it to store liquified gases in his work on low temperatures. Dewar was the first to liquify and then solidify hydrogen. He also worked on specific heat capacities, electrical effects at very low temperatures, metal carbonyls, diffusion, dissociation of molecules at high temperatures, coal tar bases, emission and absorption spectra, high vacua, soap films and the Sun's temperature.

Release details: Model release not available. Property release not required.

Keywords: 1st to form, chemist, dewar, dewar flask, gas, hydrogen, inventor, james, low temperature, low temperature gas, portraits, research, researche, solid, surname d, thermos flask

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.