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Aristotle
Described his ideas of the four elements of matter
https://www.youtube.com/watch?v=v12xG80KcZw -
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Joseph Proust
Created the Law of Definite Proportions -
John Dalton
A chemical reaction is a rearrangement of atoms -
Amadeo Avagadro
Theorized that equal volumes of gases at the same temperature and pressure contains equal numbers of molecules -
William Crookes
Discovered the properties of cathode rays -
Henri Becquerel
Discovered that some chemical decompose and give off very penetrating rays -
J.J. Thomson
Discovered the electron -
Madame Curie
Studied the radioactive atomic elements -
First airplane flown
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Ernest Rutherford
Attempted to examine the structure of the atom
https://www.youtube.com/watch?v=4z46Bs3fRCY -
First Model T Ford was built
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The Lincoln penny
The first redesigned Lincoln Penny was released -
Robert Millikan
Discovered how to find the mass of an electron -
Henry Moseley
Positively charge nucleus and negatively-charged electrons -
Max Planck
Originated the Quantum Theory -
Niels Bohr
Developed a picture of atomic structure -
Werner Heisenberg
Quantum Mechanics -
Erwin Schrodinger
Combined the equations for behavior of waves withe the de Broglie equation to generate a mathematical model for distribution of electrons in an atoms -
Louis deBroglie
Developed a Wave Mechanics Theory -
James Chadwick
Discovered the neutron -
The Golden Gate Bridge in San Francisco opened.
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Attack on Pearl Harbor
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WW2 Starts
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First Super Bowl
First Super Bowl took place; Packers vs. Chiefs -
Set foot on the moon
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Osama Bin Laden was captured and killed.
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iPhone 6 came out
