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Publishes an essay on hydrostatic balance
Galileo publishes as essay on hydrostatic balance, the balance for finding the weight of an object submerged in water in order to deterime its relative density -
Inclined Plane
Galileo Galilei uses balls rolling on inclined planes to show that different weights fall with the same acceleration -
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Galileo works on his theory of motion
Galileo realized that all bodies accelerate at the same rate regardless of their size or mass. He then developed the concept of motion in relation to velocity through his use of inclined planes -
Galileo invents a geometric and military compass
After inventing a geometric and military compass that also worked as a pocket calculator, Galileo hired a full-time instrument maker to mass-produce the compass -
theory of uniform acceleration
He proved that all bodies, regardless of their weight, fall at an equal rate, in the absence of friction. -
Galileo creates his own three-powered telescope
Within a month after learning about the invention of the telescopic lenses in the Netherlands, Galileo decided to create his own three-powered telescope -
Improving Telescope
Galileo improved the telescope, constructed his own, and demonstrated its military utility to Senators of the Republic of Venice from San Marco’s belltower. Then he began observing the heavens. -
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observations about the solar system
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Exploring the Heavens
Galileo discovered that the moon, shining with reflected light, had an uneven, mountainous surface and that the Milky Way was made up of numerous separate stars. -
Discovers four moons orbiting Jupiter
Galileo sees three bright stars around Jupiter; six days later he sees a fourth. He determines that these are Jupiter 's satellites. -
Galileo's celestial discoveries are certified
Among these discoveries that were certified include: Saturn, sunspots, and the satellites of Jupiter -
Visits Rome to demonstrate the telescope
In 1611 Galileo visited Rome and demonstrated his telescope to the most eminent personages at the pontifical court. As the first person to apply the telescope to a study of the skies, Galileo in late 1609 and early 1610 announced a series of astronomical discoveries. He found that the surface of the Moon was irregular and not smooth, as had been supposed; -
Catholic church has his writitings banned
The Roman Catholic Church did not finally reverse its ban on Copernican theory until 1758. -
Publishes "Assayer"
The Assayer, in which are weighed with a fine and accurate balance the contents of the Astronomical and Philosophical Weighing Scales of Lothario Sarsi of Siguenza, written in the form of a letter -
two chief world system published in Florence
The two wolrd chief system was a 1632 Italian language book by Galileo Galilei comparing the Copernican system with the traditional Ptolemaic system. -
Makes discovery about the moon
Galileo concludes that the moon wobbles on its axis every month, a motion called liberations -
Galileo's Dialogues Concerning Two New Sciences
Galileo's Dialogues Concerning Two New Sciences was Galileo's final book and a sort of scientific testament covering much of his work in physics over the preceding thirty years.
