He stated in his Hypothesis of Light of 1675 that light was composed of corpuscles (particles of matter) which were emitted in all directions from a source.
وفي عام 1675 ذكر في فرضيته للضوء بأن الضوء مكون من كريات (جزيئات مادة) تنبعث من مصدر في كل الاتجاهات.