Thales was not a chemist; important contributions in geometry and astronomy.
thales philosophies
Fibonacci is famous for his contributions to number theory.
Thales was a great mathematician . He belongs to the country of Turkey
A teacher
He created a model for the universe that explained retrograde motion if Earth was at the centre.
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There is no Contribution of Thales in the field of trignometry.........
he discovered the electron
Antoine Lavoisier was a French nobleman and chemist. His contribution to the development of the modern atomic theory was his idea of the possibility of an Atomic Mass.
I dont know how on the atomic model... but i know that Thales Milutus began the theory. As the greek philosipher Democritus followed up on the idea.
The contribution of anyone prior to about 1600 to the development of atomic theory might as well be "nothing whatsoever." Democritus and/or Leucippus contributed the name "atomos", but not much else; they were wrong about nearly every detail. John Dalton is just about the earliest scientist to have had any significant contribution to atomic theory, and most of what we now consider atomic theory was developed since about 1900.
dalton, rutherford ,etc
Niels Bohr proposed the planetary model for the atom.
Ernest Rutherford contributed to the atomic theory through his gold foil experiment. He discovered that there was a positively charged central core to the atom and he called it the nucleus.
The Greeks of Miletus, collectively known as the Milesians, were philosophically trying to determine the origin of all things. It was Thales who postulated that water was the source of all matter and is thus considered a contributor to atomic theory. .
Leukippus, Democritus, Dalton, Bohr, Rutherford, Thomson and many others.
Robert A. Millikan was the first to determine the electrical charge of the electron.