James Gregory 1638 - 1675

born in:
Aberdeenshire, Scotland, United Kingdom

1662 - moved to London where he published Optica promota (1663). In the epilogue Gregory describes the revolutionary design of a telescope based on mirrors. later wrote Vera circuli et hyperbolae quadratura (1667) and the Geometriae pars universalis (1668); Grandfather of John Gregory (1724-1773), physician and writer.