Samuel Klingenstierna

Samuel Klingenstierna (1698 to 1765) was a Swedish mathematician and natural philosopher. He began his career as a lawyer but soon turned to natural philosophy, and as a student he lectured on the then new analysis of Newton and Leibniz. From 1728 he was professor of geometry at Uppsala University, moved to physics in 1750, and two years later retired to become an adviser to the Commander of Artillery; in 1756 he became tutor to the Crown Prince, the future King Gustav III. He was the first to point out errors in Newton's theory of refraction, and his geometrical notes were used by John Dollond in the experiments that led to the achromatic telescope. Because he published in Sweden and in Swedish, his priority was not recognized.