Galilelo biography

He was born in the city of Pisa , then part of the Duchy of Florence. Galileo studied speed and velocity , gravity and free fall , the principle of relativity , inertia , projectile motion and also worked in applied science and technology, describing the properties of the pendulum and " hydrostatic balances". He was one of the earliest Renaissance developers of the thermoscope [ 9 ] and the inventor of various military compasses.

Galileo galilei contribution to physics

With an improved telescope he built, he observed the stars of the Milky Way , the phases of Venus , the four largest satellites of Jupiter , Saturn's rings , lunar craters and sunspots. He also built an early microscope. Galileo's championing of Copernican heliocentrism was met with opposition from within the Catholic Church and from some astronomers.

The matter was investigated by the Roman Inquisition in , which concluded that his opinions contradicted accepted Biblical interpretations. He spent the rest of his life under house arrest. Galileo was born in Pisa then part of the Duchy of Florence on 15 February , [ 16 ] the first of six children of Vincenzo Galilei , a leading lutenist , composer, and music theorist , and Giulia Ammannati , the daughter of a prominent merchant, who had married two years earlier in , when he was 42, and she was Galileo became an accomplished lutenist himself and would have learned early from his father a skepticism for established authority.

Three of Galileo's five siblings survived infancy.