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445 BCE
Empedocles
Empedocles believed that the universe consisted of four elements: earth, air, water and fire -
420 BCE
Leucippus And Democritus
Leucippus believed that the universe was composed of two elements: atoms and the space inbetween the atoms. Leucippus then passed his work onto Democritus. -
300 BCE
Epicurus
Epicurus believed that the world was made from atoms. He thaught that these atoms were unbreakeable small parts -
75 BCE
Lecritus
First wrote about Epicurus's work in on the nature of the universe -
Period: 400 to Jun 25, 1499
Alchemical Era
During the Middle Ages many people studied alchemy. This was the study of turning lead into gold. -
Pierre Gussendia
Pierre worked with Epicurus's theory and expanded and created his own theory using many of the same thoughts of Epicurus
