Q.F.F.Q.S. Dissertatio Gradualis, De Gravitate Corporum Terrestrium

Graduate dissertation defended by A. A. Roman at the University of Uppsala discussing the effects of gravity upon terrestrial bodies. together with:

Dissertatio gradualis de gravitate lunae . . . Samuel Klingenstierna, praeses. Gabriel Kolmodin, respondent. Holmiae: Literis Wernerianis, 1734.

Dissertatio gradualis de gravitate aeris. . . Samuel Klingenstierna, praeses. Johann Kristiern Duraeus, respondent. Upsaliae, Literis Wernerianis, 1732.

These three scarce dissertations, all relating to gravity, were presided over by Samuel Klingenstierna (1698 – 1765), a renowned Swedish mathematician and scientist. Klingenstierna started his career as a lawyer but soon moved to natural philosophy. Already as a student he gave lectures on the then novel mathematical analysis of Newton and Leibniz. He was professor of geometry in Uppsala University from 1728 and in 1750 he moved to physics, but retired two years later to become an advisor to the Commander of Artillery. In 1756 he assumed the post of the tutor of the Crown Prince, the future king Gustav III. He was the first to enunciate errors in Newton's theories of refraction, geometrical notes that were used by John Dollond in his experiments. Later on he was instrumental in the invention of the achromatic telescope. Klingenstierna published in Sweden and in Swedish, and his priority was not recognized.