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Date: 460-370 B.C.
Suggested that atoms are indivisable and indestructable. -
Date: 492 BCE-432 BCE
Empedocles believed that all matter was made up of only four elements: earth, water, air, and fire. -
Date: 440 BC
Leucippus helped Democritus create the atomic theory. -
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. -
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. -
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.
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1348-1350 the black plague wipes out much of the europian population
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The U.S. gained it's independance from britain.
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John Dalton pictures atams as tiny indestructible partical, with no internal structure.
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Planck came up with quantum action
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Millikan found out what the charge is on an electron.
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Discovered the electron and made the PlumPudding model.
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Heisenberg discovered how electrons move
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Found that the atom has a possitivly charged nucleus and electrons that float around it.
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Made model where electrons move in a circular motion around the nucleus at a fixed distance.
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Louis started playing with the idea of matter as waves
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Schrodinger developed the latest atomic model for wer the electrons will likely be found
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Confermed the existanse of neutron and that they were negativly charged, and proved that the nucleus contained protons and neutrons.
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Date: 1939-1945
A war between the allies and the axis. -
Al Qaeda members crash planes into the World Trade Center and pentagon.