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Timeline
Atomic therory - Coggle Diagram
Timeline
Atomic therory
400 BC
Democritus was an Ancient Greek Pre Socratic philosopher primarily remembered today for his formulation of an atomic theory of the universe. Democritus was born in Abdera, Thrace, around 460 BC, although there are disagreements about the exact year.
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1803
Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties
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1900
Thomson atomic model, earliest theoretical description of the inner structure of atoms, proposed about 1900 by William Thomson
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1911
The atom, as described by Ernest Rutherford, has a tiny, massive core called the nucleus. The nucleus has a positive charge. Electrons orbit the nucleus. The empty space between the nucleus and the electrons takes up most of the volume of the atom.
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