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Democritus, He theorized that all material bodies are made up of indivisibly small atoms. -
Plato/ Aristocles, founded -
Aristotle, he was the founder of former logic. -
Alchemy is a universal art of vital chemistry which by fermenting the human spirit purifies and finally dissolves it -
Antoine Lavoisier, he developed a theory of a chemical reactivity of oxygen. -
Jhon Dalton, found that atoms are tiny and indestructible -
Jhon Newland, major findings was the law of Octaves. -
Dmitri Mendeleev, he developed the periodic classification of the elements. -
Heinrich Rudolf Hertz, found the photoelectric effect -
Max Planck, the quantum theory. This revolutionized our understanding of atomic and subatomic processes -
Robert A. Millikan, made a method of measuring the minute electric charge that is present on many of the droplets in an oil mist. -
Henery Moseley, demonstrated that the major properties of an element are determined by the atomic number, not by the atomic weight. -
J.J Thompson, discovered the electron -
Rutherford, found the description of the structure of atoms. -
Niels Bohr found a model of the atom where the electron was able only certain orbits around the nucleus. -
Ernest Rutherford, discovering the atomic nucleus and proposing the Rutherford atomic model. -
Werner Heisenberg, he discovered a way to formulate quantum mechanics in terms of matrices. -
Erwin Schrodinger, the electron cloud model is a modern representation of atomic structure that describes the probable locations of electrons around a nucleus. -
Henri Becquerel, discovered radioactivity -
James Chadwick discovered the neutron.