Robert Hare,US chemist

Numéro d’image : 11685476
Robert Hare,US chemist
Robert Hare (1781-1858),US chemist. Hare studied at Yale and Harvard. In 1801,at the age of 20,Hare invented the oxy-hydrogen blowpipe,which achieved a temperature high enough to boil platinum (4170 degrees Celsius). He attained a high reputation as a chemist,and was responsible for the invention of the calorimeter and a hydrostatic balance. He also isolated boron and silicon. He held the post of professor of chemistry at the University of Pennsylvania from 1818 to 1847. A prolific author,his works include: 'Spiritualism Scientifically Demonstrated' (1855). This engraving was made at the establishment of John M. Butler in Philadelphia
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