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Jan 1, 1450
Gutenberg printing press
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Feb 11, 1492
Discovery of the Americas
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Period: Feb 11, 1517 to
Reformation of the Catholic Church
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Galileo convicted of heresy
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Joseph Priestley
discovered oxygen, carbon monoxide, and nitrogen dioxide -
Declaration of Independence
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Antoine Lavoisier
law of conservation of mass; father of modern chemistry -
Alessandro Volta
electrochemical cell and batteries -
John Dalton
Proposed atomic theory -
Michael Faraday
electricity and electrochemistry -
Louis Pasteur
pasteurization process -
Period: to
First transcontinental railroad in US
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Civil War
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Alfred Nobel
dynamite; Nobel Prize -
Henri Becquerel
radioactivity -
Max Planck
Formulated equation to describe blackbody spectrum E=hu -
Guglielmo Marconi
radio -
Marie Curie
radioactivity -
J.J. Thomson
Discovered electrons, isotopes, invented mass, spectrometer -
Eugen Goldstein
Discovered proton -
Ernest Rutherford
Discovered and made a model of the nucleus -
Robert Millikan
Discovered electronic charge and photoelectric effect -
Neils Bohr
Published revised version of Rutherford's theory on electron travel -
Henry Moseley
Developed atomic numbers of the elements -
Assassination of Archduke Ferdinand
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Albert Einstein
Theory of Relativity -
Bolshevik Revolution
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Treaty of Versailles
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Sir Fredrick Banting
isolated insulin -
Philo Farnsworth
TV -
Louis deBroglie
Discovered wave nature of electrons -
Werner Heisenberg
Quantum Mechanics -
James Chadwick
Discovered neutron -
Wallace Carothers
neoprene and nylon -
Bombing of Pearl Harbor
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Leo Szilard
nuclear chain reactions and atomic bomb -
First Cellular Phone
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Kary Mullis
polymerase chain reaction -
Initial concept for world wide web
