Galileo Galilei
| Galileo Galilei | |
|---|---|
Portrait by Giusto Sustermans
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| Born |
15 February 1564 Pisa, Duchy of Florence, Italy |
| Died | 8 January 1642 (aged 77) Arcetri, Grand Duchy of Tuscany, Italy |
| Residence | Grand Duchy of Tuscany, Italy |
| Nationality | Italian |
| Fields | Astronomy, physics, engineering, natural philosophy, mathematics |
| Institutions |
University of Pisa University of Padua |
| Patrons |
Cardinal del Monte Fra Paolo Sarpi Prince Federico Cesi Cosimo II de Medici Ferdinando II de Medici Maffeo Barberini |
| Alma mater | University of Pisa (no degree) |
| Academic advisors | Ostilio Ricci |
| Notable students |
Benedetto Castelli Mario Guiducci Vincenzo Viviani |
| Known for |
Kinematics Dynamics Telescopic observational astronomy Heliocentrism |
Signature
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| Notes | |
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His father was the musician Vincenzo Galilei. Galileo Galilei's mistress Marina Gamba (1570 – 21 August 1612?) bore him two daughters, (Maria Celeste (Virginia, 1600–1634) and Livia (1601–1659), both of whom became nuns), and a son, Vincenzo (1606–1649), a lutenist.
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Galileo Galilei (Italian pronunciation: [ɡaliˈlɛːo ɡaliˈlɛi]; 15 February 1564 – 8 January 1642) was an Italian polymath: astronomer, physicist, engineer, philosopher, and mathematician, he played a major role in the scientific revolution of the seventeenth century.
He has been called the "father of observational astronomy", the "father of modern physics", the "father of scientific method", and the "father of science".
His contributions to observational astronomy include the telescopic confirmation of the phases of Venus, the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), and the observation and analysis of sunspots. Galileo also worked in applied science and technology, inventing an improved military compass and other instruments.
Galileo's championing of heliocentrism and Copernicanism was controversial during his lifetime, when most subscribed to either geocentrism or the Tychonic system. He met with opposition from astronomers, who doubted heliocentrism because of the absence of an observed stellar parallax. The matter was investigated by the Roman Inquisition in 1615, which concluded that heliocentrism was "foolish and absurd in philosophy, and formally heretical since it explicitly contradicts in many places the sense of Holy Scripture." Galileo later defended his views in Dialogue Concerning the Two Chief World Systems, which appeared to attack Pope Urban VIII and thus alienated him and the Jesuits, who had both supported Galileo up until this point. He was tried by the Inquisition, found "vehemently suspect of heresy", and forced to recant. He spent the rest of his life under house arrest. While under house arrest, he wrote one of his best-known works, Two New Sciences, in which he summarized work he had done some forty years earlier on the two sciences now called kinematics and strength of materials.
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