(Benjamin Thompson; 1753–1814) American-born British physicist,
who acted as a British spy during the American Revolution. As a result he was forced to flee in 1775, first to England and then to Munich. There he observed the boring of cannon barrels, which led him to his best-known proposition, that friction produces heat. While in Munich he was made a count of the Holy Roman Empire. Returning to England in 1795, he helped to demolish the caloric theory.
Subjects: Science and Mathematics — Architecture.