When1: 1656
When2: 1675
Who: Christiaan Huygens [Huygens, Christiaan]
What: astronomer/mathematician/physicist/inventor
Where: Netherlands
works\ pendulum clock [1656]; spiral balance spring for clocks [1675]
Detail: He lived 1629 to 1695 and saw Venus clouds, Saturn rings, and Jupiter red spot. He invented a light-wave theory using Huygen's principle and contributed to calculus. He improved clocks {spiral balance spring}.
Physical Sciences>Astronomy>History>Invention
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224