Galilelo was born on February 15, 1564. He was born in Pisa, Italy. He was an Italian. He died in January 8, 1642, in Arcetri, near Florence. He was an astronomer and physicist. He discovered important facts about our earth and sky through the use of telescope. He also discovered the law of falling bodies, as well as the law of the pendulum. Galileo designed a variety of scientific instruments, and improved the refracting telescope. In the early 1570’s his family moved to Florence. His father wanted him to be a doctor so he sent Galileo to the University of Pisa in 1581. He made some mechanical instruments, gaining his first public notice with a hydrostatic balance, used to find the specific gravity of objects by weighing them in water. Because lacking a genuine interest in medicine, he turned more to his primary talent, mathematics. In 1589, he became professor of mathematics at the University of Pisa.

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