atoms

democritus

400 BCE

ancient greek philosopher that believed that atoms are indivisible and cant be destructed ,he created the solid sphere model

john dalton

1883

he was an English chemist and meteorologist , he proposed the modern atomic theory ,both he and democritus had the same model

J.J Thomson

1897

Thomson is an English physicist with a Nobel laureate in physics. Thomson discovered electrons, he also proposed the plum pudding model in 1904.

Ernest Rutherford

1908

Earnest Rutherford a New Zealand-born British physicist who came to be known as the father of nuclear physics. His atomic model shows that the atom is mostly an empty space with electrons orbiting a positively charged nucleus in set ,predictable paths

Neils Bohr

1913

Bohr is a Danish physicist who made a foundational contribution to the atomic structure. Bohr created the solar system of the atoms, it consisted of a small positively charged nucules and electrons that orbit around the center.