-
100
Democritus
Date: 460-370 B.C.
Suggested that atoms are indivisable and indestructable. -
100
Empedocles
Date: 492 BCE-432 BCE
Empedocles believed that all matter was made up of only four elements: earth, water, air, and fire. -
100
Leucippus
Date: 440 BC
Leucippus helped Democritus create the atomic theory. -
100
Plato
Date: 427 BC-347 BC
Plato said that each of the four supposed elements (earth, wind, fire, water) were made of 3D shaped specific to each element. -
100
Aristotle
Date: 384 BC-322 BC
Aristotle believed in the four basic elements and he said that there were also four characteristics that went with the elements. There was hotness, dryness, wetness, and coldness. -
100
pompeii
a volcanoe blew up near a city which was completely covered in ash and bodies are seen today in surreal stauelike poses in the year of 79 a.d. -
Oct 1, 1348
Black plague
1348-1350 the black plague wipes out much of the europian population -
U.S. established
The U.S. gained it's independance from britain. -
John Dalton
John Dalton pictures atams as tiny indestructible partical, with no internal structure. -
Planck
Planck came up with quantum action -
Millikan
Millikan found out what the charge is on an electron. -
J.J. Thompson
Discovered the electron and made the PlumPudding model. -
Heisenberg
Heisenberg discovered how electrons move -
Rutherfod
Found that the atom has a possitivly charged nucleus and electrons that float around it. -
Bohr
Made model where electrons move in a circular motion around the nucleus at a fixed distance. -
Louis de Broglie
Louis started playing with the idea of matter as waves -
Schrodinger
Schrodinger developed the latest atomic model for wer the electrons will likely be found -
Chadwick
Confermed the existanse of neutron and that they were negativly charged, and proved that the nucleus contained protons and neutrons. -
WW2
Date: 1939-1945
A war between the allies and the axis. -
9/11
Al Qaeda members crash planes into the World Trade Center and pentagon.