Biography Galileo Galilei was born in Pisa, Italy on February 15, 1564. He was the oldest of seven children. His father was a musician and a wool trader, who wanted his son to study medicine. Galileo was Catholic and he died the 8 January 1642 at the age of 77 .
Galileos's Rout From Religion To Science Galileo had announced to his father that he wanted to be a monk. This was not exactly what he had in mind, so Galileo was hastily withdrawn from the monastery. In 1581, at the age of 17, he entered the University of Pisa to study medicine, as his father wished.
Galileo's Inventions & Observations <ul><li>At the age of twenty, in 1584, Galileo </li></ul><ul><li>discovered the Law of the Pendulum </li></ul><ul><li>that is used nowadays in many clocks. </li></ul><ul><li>1593, Galileo constructed a thermometer, using the expansion and contraction of air in a bulb to move water in an attached tube. </li></ul><ul><li>1609, Galileo was the first to use the telescope as an instrument to observe stars, planets or moons. </li></ul>
<ul><li>In 1612, having determined the orbital periods of Jupiter's satellites, Galileo proposed to use their positions as a universal clock </li></ul><ul><li>In 1650 Galilei created the combination of a candle and a mirror to reflect light throughout a building. </li></ul><ul><li>He did experimentations with the floating objects, developing a balance that could tell him that a piece of gold was 19.3 times heavier than the same volume of water. </li></ul>
Marriage Galileo Galilei married a 21 year old woman with whom he had two daughters and a boy. Galileo’s greatest observation was understanding how things move, the basic creation of modern science of physics. He didn’t accept Aristotle idea about how thing fall faster and slower. So he threw two cannon balls, one of 10 kg and the other of 1 kg at the same time and they fall at the same time and he proved Isaac Newton’s understanding of force, motion and gravity .
Galileo and the Catholic Church Galileo agreed with Copernicus heliocentric model, that proposed the Sun was the center of the universe. This thoughts came because he saw Venus’s phases, but this thoughts were also considered heretical to the Bible’s creation, which believed in Ptolemy’s model, in which the Earth was the center of the Universe. This started a discussion between the Catholic Church and Galileo and caused his death.
Curious Facts <ul><li>Did you know that … </li></ul><ul><li>He died the same day Copernicus was born? </li></ul><ul><li>He got blind looking at the Sun? </li></ul><ul><li>When he was a child he wanted to be a monk and then he died because he was considered an heretic? </li></ul>Links used <ul><li>http://inventors.about.com/od/gstartinventors/a/Galileo Galilei.htm </li></ul><ul><li>http :// greatthinkers.suite101 . com / article.cfm.galileo galileis life and times </li></ul>
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