Galileo Galilei
Syllabification: (Gal·i·le·o Ga·li·lei)
Pronunciation: /ˌgaləˈlāō ˌgaləˈlāē/
Definition of Galileo Galilei
- (1564–1642), Italian astronomer and physicist. He discovered the constancy of a pendulum’s swing, formulated the law of uniform acceleration of falling bodies, and described the parabolic trajectory of projectiles. He applied the telescope to astronomy and observed craters on the moon, sunspots, Jupiter’s moons, and the phases of Venus.