Christiaan Huygens

Christiaan Huygens a Dutch mathematician, physicist, engineer, astronomer, inventor.

Discoverer of Titan, Saturn’s largest moon.

Inventor of pendulum clock.

Inventor of magic lantern.

Inventor of 'centrifugal governor', also known as 'centrifugal regulator' and 'fly-ball governor'.

One of discoverer of Orion Nebula.

He developed Huygens' Principle, a method for analyzing wave propagation.

was the first to propose the wave theory of light.

He developed this theory in 1678 and published it in his 'Treatise on Light' in 1690.