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Period: 600 BCE to 600 BCE
VI century
Zoroastrum, Budha and Lao-Tse founded major religions.
Greek philosophers correlate basic principles of nature based on reason and observation. -
Period: 600 BCE to 600 BCE
VI: Elements
Thales: water
Anaximandros: apeiron
Anaximenes: air
Heraclitos: fire -
Period: 500 BCE to 400 BCE
V Century
Alcmeon: unbalance in opposite features
Hipócrates: Four body humors: blood, phlegm, two types of bile and four ages.
Demicritos: atoms -
Period: 400 BCE to 300 BCE
IV Century
Empedocles: four elements
Aristoteles: ether ( fifth element) -
Period: 130 to 200
II-III Century
Galenus: natural, vital, animal spirit -
Period: 1450 to 1450
Printing machine: Middle age to Renaissance
Johann Guttenberg -
Period: 1561 to
Francis Bacon
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Period: to
James I
Inductive reasoning -
Period: to
John Dalton
-
Period: to
Gay-Lussac
-
Period: to
Jöns Jakob Berzelius
1807: Chemistry of life is different from that of inorganic compounds. -
Period: to
Lavoisier
Mass Conservation Law -
Period: to
Faraday
discover of Benzene -
Period: to
Friedrich Wöhler
ammonium cyanate (inorganic) + hot---> urea (organic) -
Period: to
August Friedrich Kekulé
4 valence assignment to C
1861: Organic formulation system