Created on March 28, 2022
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The father of modern science
He created 4 objects that will revolutionize sciences.
thermometer - 1593 compass - 1597 microscope - 1924 telescope - 1609
It is a prototype of a thermometer.
It doesn't mesure the difference of temperature, it only indicates the temperature.
The geometric and military compass is Galileo's first commercial scientific instrument.
It acted as an early calculator and was used by merchant, sailors and soldiers.
Called "occhiolino" by Galileo himself, it is not the first microscope but an improved version of it.
It magnifies 30 times.
None of his microscope were still used after his death.
His most famous invention even though he is not really the inventor.
He heard about the "Dutch perspective glasses" within days had designed an improved version of it which allows to magnifies up to 20.
The stars of the milky way
The rings of Saturns
The phases of Venus
Craters and mountain on the moon
Galileo was able to use the length of the shadows to estimate the height of the lunar mountains, showing that they were similar to mountains on Earth.
3. Jupiter’s moons
The planet Jupiter was accompanied by four tiny satellites which moved around it. These are now known as the Galilean moons: Io, Ganymede, Europa and Callisto.
The stars of the Milky Way
Galileo saw that the Milky Way was not just a band of misty light, it was made up of thousands of individual stars
The phases of Venus
The planet Venus showed changing crescent phases like those of the Moon, but their geometry could only be explained if Venus was moving around the Sun rather than the Earth. This undermined the idea that everything in the heavens revolved around the Earth
Galileo wrote a book in 1610, The sidereal Messenger.
He describes his recent discoveries of the solar system.
It is dedicated to Cosimo II de Medici, the Grand duke of Tuscany whom he had tutored in mathematics.
The rings of Saturn
Over several years of observations, he noted that the rings changed shape and even disappeared, as they changed their inclination to earth. A the beginning he thoughts they were giants moons.
1616 : he is forbiddenfrom holding and defending his beliefs
Geocentrism of the Church
Geocentrism is a common belief since antiquity. The church follow this principe too, and decide to prohibit any other Belief because of the interpretation of the bible.
Two trials because of different beliefs
Galilei's problems with the church
Thought by Nicolaus Copernicus in 1543 and publshed the same year.
Copernican planetary system
It is the birth of heliocentrism, a belief prohibited by the church. The sun is the center of the solar system and the planets move around it.
Formulated by the egyptian astronomer Ptolemy around 150 CE.
The Ptolemaic system is a geocentric system. It starts by assuming that Earth is stationary and at the centre of the universe. Then, the other stellar objects move around it. It was the system adopted by the church.
The two panetary system theory
Curiosity is the key to problem solving.