Huygens,
Christian 1629-95; Du. physicist, mathematician, & astronomer
See Huygens in American Heritage Dictionary 4
(hīˈgənz, hoiˈgĕns), Christiaan 1629-1695.
Dutch physicist and astronomer who discovered Saturn's rings (1655), pioneered the use of pendulums in clocks (1657), and formulated Huygens' principle.