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The name "telescope" was coined for Galileo's instrument by a Greek mathematician, Giovanni Demisiani, [181] [182] at a banquet held in 1611 by Prince Federico Cesi to make Galileo a member of his Accademia dei Lincei. [183] In 1610, he used a telescope at close range to magnify the parts of insects.
Aryabhata (476–550), in his magnum opus Aryabhatiya (499), influenced by Greek astronomy, [30] propounded a planetary model in which the Earth was taken to be spinning on its axis and the periods of the planets were given with respect to the Sun. [31] His immediate commentators, such as Lalla, and other later authors, rejected his innovative ...
To protect his good name, Galileo requested a letter from Bellarmine stating the truth of the matter. This letter assumed great importance in 1633, as did the question whether Galileo had been ordered not to "hold or defend" Copernican ideas (which would have allowed their hypothetical treatment) or not to teach them in any way.
Galileo attempted to mathematically map Dante's description of hell, trying to bridge the Divine Comedy and scientific thinking. According to professor Mark Peterson, Galileo may have had a secondary aim, to attack the cosmological model of hell proposed by Alessandro Vellutello of Lucca , while supporting another model by the Florentine ...
Galileo establishes two main premises before addressing his conclusion. God has created Scripture and nature. They cannot contradict each other. Nature is independent of accommodation, but Scripture is produced to accommodate. [2] Galileo argued that the Copernican theory was not just a mathematical calculating tool, but a physical reality.
The Copernican model displaced the geocentric model of Ptolemy that had prevailed for centuries, which had placed Earth at the center of the Universe. Although he had circulated an outline of his own heliocentric theory to colleagues sometime before 1514, he did not decide to publish it until he was urged to do so later by his pupil Rheticus.
Later adopters of the epicyclic model such as Tycho Brahe, who considered the Church's scriptures when creating his model, [32] were seen even more favorably. The Tychonic model was a hybrid model that blended the geocentric and heliocentric characteristics, with a still Earth that has the sun and moon surrounding it, and the planets orbiting ...
Galileo was the first to investigate the timekeeping properties of pendulums, beginning around 1603. [4] His interest was sparked by his discovery that, at least for small swings, the pendulum is isochronous: its period of swing is the same for different size swings. He realized that this property made the pendulum useful for timekeeping.