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Feb 15, 1564
Galileo Birth
Born in Pisa, Italy. -
Period: 1581 to
Galileo Influences
Copernicus influenced Galileo because of his heliocentric theory. This theory stated all planets revolve around the sun. So Galileo wanted to prove this right with his telescope. Aristotle was also a great influence. Aristotle believed the moon was perfectly smooth, but Galileo believed differently. He used his telescope to study the moon. He then realized Aristotles theory was wrong and the moon was uneven. -
Galileos Telescope
So what’s this telescope that seems to prove these famous astronomers and philosophers wrong. In 1609, Galileo made a telescope with 3X magnification, later improving with 32X magnification. He observed 3 stars, that he later closed as Jupiter’s moons. He also discovered the fourth moon. Today these moons are known as “Galilean satellites”. He also observed the phases of Venus. -
Galileos Death
Died in Florence, Italy. -
Newtons Birth
Born at Woolsthorpe Manor in Lincolnshire, England. -
Newtons Influences
Galileo and Johannes Kepler influenced Newton. Galileo’s work on inertia helped with his First Law of Motion. Kepler’s Third Law helped with his Law of Universal Gravitation. -
Newtons Contribution
Newton formulated his Three Laws of Motion which were influenced by Kepler’s Laws. This then helped him with his theory of gravity. These laws helped explained the planetary orbits and almost other motions. Also this helped him calculate the mass of each planet and much more. -
Newtons Death
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Dmitri Mendeleev
Born in Tobolsk, Siberia, Russia -
Mendeleev Inspiration
His inspiration came from the card game known as solitaire and patience. There is also a story, where Mendeleev had a dream of a table. He awoke and quickly wrote it down and from then on, worked hard to make this dream come true. -
Mendeleev Contribution
The best contribution that Mendeleev gave to science was the periodic table. He arranged the elements into rows according to the atomic mass and columns based on chemical and physical properties. He is often falsely mistaken for the inventor of the table, but he did contribute a huge part to the creation of the periodic table. He also wrote a book called the Principles of Chemistry. The book explained and organized the elements. -
Mendeleev Death
Died in St. Petersburg, Russia.