trololol...hahahaXD stop cheatin:P get your own answer.haha
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.
Thales, an ancient Greek philosopher but did not contribute directly to chemistry. Thales is known for his studies in geometry and astronomy, particularly for his focus on water as the primary substance from which everything is derived. His philosophical ideas laid the foundation for future scientific thought, including the development of chemistry.
Thales was not a chemist; important contributions in geometry and astronomy.
Probable Thales from Miletus 2 600 years ago.
he did not develop anything regarding the 'atomic theory' for he was against that theory.
1955
The first study of the atom is often attributed to the ancient Greek philosopher Democritus. Democritus proposed that all matter is made up of tiny, indivisible particles called "atoms." His ideas laid the foundation for modern atomic theory.
He developed the "ELECTOMAGNETISM"
discovering artificial radioactivity
he drew pictures about it :) <3
he came up with the theory of atomic numbers
Im sorry 4 not being completely sure, but................. Newton believed in atomic forces. He thought that atoms and atomic power could not be properly understood without the use of quantum mechanics. -Sorry TJ