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Jan 1, 1450
Gutenberg Printing Press
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Jan 1, 1492
Discovery of the Americas
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Jan 1, 1500
Reformation of the Catholic Church
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Galileo Convicted of Heresy
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Joseph Priestley- Discoverd oxygen, carbon monoxide, and nitrous oxide
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Declaration of Independence
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Antoine Lavoisier- Law of Conservation of Mass
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Alessandro Volta- Electrochemical cell and battery
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John Dalton
Proposed the modern Atomic theory -
Michael Faraday- Electricty and Electrochemistry
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Civil War
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Louis Pastuer- Pastuerization
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Alfred Nobel- Dynamite
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Transcontinental Railroad
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Eugen Goldstein
Proposed the raisin pudding model of the atom -
Guglielmo Marconi- Radio
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Henri Becquerel- Radioactivity
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J. J. Thomson
Discovered the electron -
Marie Curie- Radioactivity
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Ernest Rutherford
Discovered alpha and beta radiation -
Max Planck
Revolutionized the quatum mechanics of atoms -
Albert Einstein
Mathematically proved the existance of atoms -
Robert Millikan
Determined the charge of the electron -
Niels Bohr
Discovered energy shells of electrons and invented the Bohr model -
Henry Moseley
Developed our modern understanding of the Atomic Number -
Assassination of Archduke Ferdinand
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Bolshevik Revolution
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Treaty of Versailles
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Sir Frederick Banting- Isolated insulin
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Louis de Broglie
Proposed the particle-wave duality -
Erwin Shrodinger
Invented wave mechanics -
Werner Heisenberg
Proposed the neutron-proton model of the atom and speculated on the behavior of electrons -
Philo Farnsworth- TV
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James Chadwick
Discovered the neutron -
Leo Szilard- nuclear chain reactions and atomic bomb
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Wallace Carothers- Neoprene and Nylon
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Bombing of Pearl Harbor
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Initial Concept for the Internet
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First Cellular Phone
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Kary Mullis- Polymerase chain reaction
