![]() ![]() ![]() Galileo’s first telescope could magnify the night sky by 3 times. He did not have copies of the plans but was able to design his own using trial and error. When he was in his 40s, Galileo heard about a new invention from the Netherlands, called the telescope. He did so to prove that the speed at which heavy objects fall, did not depend on their weight. In one of his most famous experiments, Galileo dropped 2 weights from the tower of Pisa. He wanted to understand the maths of the world around him and studied the motion of objects for more than 20 years. When he was 25, Galileo became a professor of maths. ![]() However, after a short while he chose to focus on philosophy and maths instead. He went to university in Pisa to study medicine. Galileo was born in Pisa, in the Duchy of Florence (now a part of Italy). ![]() Source: Discourses and Mathematical Demonstrations Relating to Two New Sciences (1638) "See now the power of truth the same experiment which at first glance seemed to show one thing, when more carefully examined, assures us of the contrary." Research Areas: speed, velocity, motion, astronomy, tides “Alas! Your dear friend and servant Galileo has been for the last month hopelessly blind so that this heaven, this earth, this universe, which I by my marvelous discoveries and clear demonstrations had enlarged a hundred thousand times beyond the belief of the wise men of bygone ages, henceforward for me is shrunk into such a small space as is filled by my own bodily sensations.Occupation: Astronomer, Mathematician, Engineer “See now the power of truth the same experiment which at first glance seemed to show one thing, when more carefully examined, assures us of the contrary.” If you listen closely to the Queen song “Bohemian Rhapsody” you will hear Galileo mentioned a number of times during the opera section.įamous Galileo quotes include: “In questions of science the authority of a thousand is not worth the humble reasoning of a single individual.” Galileo refused to believe Kepler’s theory that the moon caused the tides, instead believing it was due to the nature of the Earth’s rotation (helping prove that even the smartest people can make mistakes). Such a view of the universe differed strongly with the beliefs of the Catholic Church at the time and Galileo was forced to withdraw many of his ideas and even spent the final years of his life under house arrest. Work by Galileo, Nicolaus Copernicus and Johannes Kepler helped to supercede this theory with the more accurate heliocentric model. The Geocentric model of the universe which was embraced by earlier astronomers had the Earth at the center of the universe with other objects moving around it. This was similar to other ideas put forward by Galileo that were very controversial at the time. The discovery of these moons was not supported by the scientific principles of the time and Galileo had trouble convincing some people that he had indeed discovered such objects. They were later renamed the Galilean satellites in honor of Galileo himself. In 1610 he made observations of 4 objects surrounding Jupiter that behaved unlike stars, these turned out to be Jupiter’s four largest satellite moons: Io, Callisto, Europa and Ganymede. With these telescopes, Galileo was able to observe the skies in ways previously not achieved. Galileo built on the work of others to create a telescope with around 3x magnification, he later improved on this to make telescopes with around 30x magnification. Galileo enrolled to do a medical degree at the University of Pisa but never finished, instead choosing to study mathematics. Among his inventions were telescopes, a compass and a thermometer. Galileo was a ground breaking astronomer, physicist, mathematician, philosopher and inventor. Galileo Galilei was born in Pisa, Italy, on the 15th of February 1564, he died on the 8th of January 1642. ![]()
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