<P> The history of artificial refrigeration began when Scottish professor William Cullen designed a small refrigerating machine in 1755 . Cullen used a pump to create a partial vacuum over a container of diethyl ether , which then boiled , absorbing heat from the surrounding air . The experiment even created a small amount of ice , but had no practical application at that time . </P>
<P> The history of artificial refrigeration began when Scottish professor William Cullen designed a small refrigerating machine in 1755 . Cullen used a pump to create a partial vacuum over a container of diethyl ether , which then boiled , absorbing heat from the surrounding air . The experiment even created a small amount of ice , but had no practical application at that time . </P>
who invented refrigerator & what year was it invented
who invented refrigerator & what year was it invented
William Cullen 1755
William Cullen 1755