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85
Ptolemy's Birth
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Period: 85 to 165
Influencers
One of the main things that influenced Ptolemy's work was his access to the library of Alexandria, one of the greatest libraries to ever exist. This gave him access to books by Aristotle and Hipparchus. Ptolemy was influenced by Aristotle's Geocentric theory and Hipparchus' understanding of orbits. He used these to accurately determine positions of celestial bodies. -
Period: 100 to 165
Geocentric Model
Ptolemy Came up with his Theory about the Earth being the Center of the universe with everything else orbiting around it. (no exact date is known). -
Period: 100 to 165
Predicting orbits
Ptolemy was able to accurately predict the position of celestial bodies in the sky. -
143
Ptolemy's Book
Ptolemy Wrote his book about all of his findings, if it wasn't for this, we might not know as much as we do about astronomy back then. -
Period: 165 to 165
Ptolemy's Death
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Period: 1473 to 1543
Nicolaus Copernicus Lifespan
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Period: 1492 to 1496
Copernicus' Professors
Copernicus was taught that the center of the solar system was the earth. however, he believed that this was incorrect, and created a heliocentric model. -
Period: 1514 to 1514
Copernicus' Book
Copernicus publishes "A Little Commentary". -
Period: 1532 to 1541
Copernicus' Manuscript
Copernicus Writes a detailed manuscript, but doesn't publish it until 1541 because of many controversies. -
Period: Feb 15, 1564 to
Galileo's Lifespan
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Period: to
First Astronomical Observation
Galileo Had the privilege of seeing a supernova, which changed his methods to experimentation. This disproved Aristotle's theory that nothing could ever change in the cosmos. -
Period: to
Heliocentric Model
Galileo Sees Jupiter's moons orbiting around it. This changes his belief from a geocentric to heliocentric view of the universe. He then published his findings, which were looked down upon by other astronomers, but not by the people. -
Period: to
The beginning of the disproof of the geocentric model
Galileo Notices that Venus orbits the sun, But does not have enough evidence to prove that earth orbits around the sun, but that earth is not the center of everything. -
Period: to
Galileo's arrest
Galileo is arrested and put on trial for heresy because of the way he wrote simplicio -
Period: to
Isaac Newton Lifespan
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Period: to
King's School
Isaac Newton is kept in school to further is knowledge and develop his mind to become the person he was. -
Period: to
Major accomplishments of Newton
Discovered Calculus, universal laws of gravity, laws of motion and physics, and discovered that white light was made of all the colors. -
Period: to
Major accomplishments of Newton Continued
Creates Principles of natural philosophy, asserts laws of motion, and creates a new telescope. -
Period: to
Mendeleev's Lifespan
Dmitri Mendeleev was born in Siberia, Russia as the youngest in a family of 14or more, and died in St. Petersburg. -
Period: to
Mendeleev's Influencers
For the first time, in 1860, many chemists meet at a convention, while many names are unknown, Mendeleev was influenced by their works. At the convention, the chemists decided atomic weight for each element, based off of the lightest and first one, hydrogen. By 1864, 50 elements were recorded and known. -
Period: to
Mendeleev's Book
Mendeleev writes and publishes his textbook titled "Organic Chemistry", and wins the Domidov Prize for it, one of the most prestigious awards at the time. -
Period: to
Mendeleev's teachings and chemistry.
In 1866, Mendeleev becomes a professor at the university of St. Petersburg. In 1868, he helps in the founding of the Russian Chemical society, and publishes his first edition of "Principles of chemistry". -
Period: to
Curie's education
Marie Curie new from the start that she wanted to continue her education, and excelled in school. She later made a deal with her sister which allowed her to attend the Sorbonne in France. -
Period: to
Marie Curie's Lifespan
Curie was born in Warsaw, Poland in 1867 and died in Savoy, France in 1934 -
Period: to
The Periodic Table
In 1869, he creates the periodic table of elements by putting the known elements on cards and arranging them by atomic number and classification like the game solitaire, he did this for 3 days with no sleep. On the third day, he fell asleep due to exhaustion, and claimed to have seen the proper arrangements in his dream, and compensated for the missing element, he called this the periodic table of elements -
Period: to
Pierre and Marie Curie
Marie Curie meets a French scientist name Pierre Curie, they are married later that year. This is what stops her from returning to Poland to teach. -
Period: to
Polonium Discovery
Pierre and Marie successfully isolate the element Polonium. Polonium is 400 times more radioactive than any other element. Polonium is named after Marie's home, Poland.