Georgy (Yuri) Viktorovich Wulff (22.06.1863 — 25.12.1925) was a Soviet crystallographer and crystal physicist and a corresponding member of the USSR Academy of Sciences (1921).
Thomas Young (13.06.1773-10.05.1829) was an English scientist, one of the founders of wave optics, a Fellow of the Royal Society (1794) and its secretary in 1802-29.