He was a Scottish physician, chemist and agriculturalist, and one of the most important professors at the Edinburgh Medical School. In 1748 while in Glasgow, Cullen invented the basis for modern refrigeration, although is not credited with a usable application. It was in Edinburgh, in 1756, that he gave the first documented public demonstration of artificial refrigeration. He used a pump to create a partial vacuum over a container of diethyl ether, which then boiled, absorbing heat from the surroundings. This created a small amount of ice, but the process found no commercial application.
He was a Scottish physician, chemist and agriculturalist, and one of the most important professors at the Edinburgh Medical School. In 1748 while in Glasgow, Cullen invented the basis for modern refrigeration, although is not credited with a usable application. It was in Edinburgh, in 1756, that he gave the first documented public demonstration of artificial refrigeration. He used a pump to create a partial vacuum over a container of diethyl ether, which then boiled, absorbing heat from the surroundings. This created a small amount of ice, but the process found no commercial application.
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