James Gregory Scientist

James Gregory (also spelled James Gregorie) FRS (November 1638 – October 1675) was a Scottish mathematician and astronomer. He described an early practical design for the reflecting telescope – the Gregorian telescope – and made advances in trigonometry, discovering infinite series representations for several trigonometric functions.In his book Geometriae Pars Universalis (1668), Gregory gave both the first published statement and proof of the fundamental theorem of the calculus (stated from a geometric point of view, and only for a special class of the curves considered by later versions of the theorem), for which he was acknowledged by Isaac Barrow.

Personal facts

Birth date	January 01, 1638
Birth place	Aberdeenshire (historic) , Drumoak
Date of death	January 01, 1675
Place of death	Edinburgh
Residence	Republic of Venice
Education	University of Padua Marischal College
Known for	Calculus Diffraction grating Gregorian telescope