Life And Discoveries Of Galileo Galilei

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Life and discoveries of Galileo Galilei

Galileo Galilei was born on February 15, 1564 in the old Italian city of Pisa and died on January 8, 1642. His parents, Vincenzo Galilei and Giuha swallow Amrnannati had 6 children, including Galileo, who wins prestige among great people of the time thanks to his father. He had 3 children with Marina Gamba, who were conceived outside of marriage, since at that time the union of a man like Galileo and a woman from Arrabal did not look good.

When Galileo was already an older man, he was blind and dies after a few years for a deplorable disease.

Galileo was a philosopher, engineer, scientist, mathematician, physical and astronomer. He was considered the father of physics, astronomy and science thanks to his great discoveries and inventions.

In 1632, Galileo took his work "the dialogue on the two maximum systems of the world" which led him to a sentence since he provided a false explanation of the tides as proof of the Earth’s movement. That sentence led Galileo 20 fatigants and humiliating days, which is what lasted the interrogation.

Main discoveries

In the times of Galileo, science was fundamentally speculative, there were no current science principles. Aristotle, for example, had classified movements in:

  • Natural.- water down a torrent
  • Violent.- An arrow shot


The explanations of the natural movements were as basic as a stone falls to the ground because it is its natural place and the smoke because it is hot ascends towards the sun.

A long time ago Aristotle held the theory that the bodies were projected in a straight line when they were pushed and transmitted by the air. Galileo, to demonstrate that what Aristotle raised was not correct placed an inclined plane on a table and on top of this a curved object at the bottom that moved a sphere painted with ink, it moved horizontally and evenly Mark with the ink that had been placed.

With this experiment, he managed to measure the distances for which a sphere had moved, which did not show a straight line, if not a parabolic.

Galileo also innovated the telescope, placed a device called Catalejo, which, by improving the resolution and getting long -range, put the universe more thoroughly, thanks to that he discovered many things, such as that for example that the moon is a satellite formed by openings, mountains, flat surfaces, etc.

Free Fall Theory

The theory that Aristotle declared centuries ago that the heavy bodies fell faster than the lightest was confirmed as wrong by Galileo Galilei when he dropped two objects, one heavy and one light from the top of the tower of Pisa with the assumption of that both would touch the ground at the same time, confirming that, regardless of the weight of the object, both would reach the same acceleration at some point after being released both at the same time from the same height.


  • Arrabal: neighborhood outside the population or in its periphery, especially the one whose population has a low economic level.
  • Speculative: make assumptions about something that is not known with certainty. (speculate)
  • Torrente: sudden and violent influx of a stream of water that is only formed by abundant rainfall or in a time of thaw and that does not usually keep a long time.
  • Catalejo: Optical instrument to see long distance that consists of a tube, usually extensible, with a lens at each end, a light of the light and another amplifier of the image formed by the first.
  • Parabolic: which has a parable or open curve figure or figure.


  • https: // www.Biography
  • http: //
  • https: //
  • http: // tauzero.Org/2009/06/Galileo-Galilei-Cientifico-Ingeniero-E-Inventor/ 

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