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340
Aristotle
(340 B.C.) He believed that matter could be divided forever. -
400
Democritus
(400 B.C.) He believed that matter was made of atoms, and that they were divisible -
Jan 1, 1040
Macbeth Starts His Rule Over Scotland
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Jul 1, 1200
China Invents a Form Of Sunglasses
Modernly called Slanties -
Jan 1, 1492
Columbus Sailed The Ocean Blue
Christopher Columbus set sail from Palos, Spain -
Benjamin Franklin was Born
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The U.S. Constitution was Adopted
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Joseph Proust and the Law Of Definite Proportions
He disproved Berthollet with the law of definite proportions, It is sometimes known as Proust's Law. -
John Dalton proposes the Atomic Theory
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Lewis and Clark begin expedition
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Abraham Lincoln becomes 16th presiden
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Alfred Nobel Invents Dynamite
BOOM -
Henri Becquerel
Discovered radioactivity through his investigations of uranium and other substances. -
JJ Thomson disovered electrons
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Ernest Rutherford discovers the nucleus
His idea of the nucleus was his most important contribution to physics -
Max Planck discovered energy quanta
He also won the Nobel Peace Prize in 1918 -
Niels Bohr won the Nobel Peace Prize for The Atomic Structure
He won it because of his work on the atomic structure. -
Robert Millikan was awarded the Nobel Peace Prize
for his work on the elementary charge of electricity and on the photoelectric effect -
Erwin Schrödinger starts study of Wave Mechanics
His discoveries concerning wave mechanics were what he was known best for. -
Werner Heisenberg studies Quantum Properties of Electrons
In 1927 he was puzzling over the basic quantum properties of electrons. He realized that the act of measuring an electron's properties by hitting it with gamma rays would alter the electron's behavior. Indeed -
Louis de Broglie discovered the wave nature of electrons
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James Chadwick discovered the neutron
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McDonalds is Founded.
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Chuck E. Cheese was founded
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Internet Was Invented
