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400 BCE
Democritus
Democritus was a central figure in the development of the atomic theory of the universe. -
John Dalton
His works include the modern atomic model and his table of relative weights of the elements, which contributed to laying the foundations of modern chemistry. -
William Crooks
He was a British chemist and physicist. His first discovery was the element thallium in 1861 and investigated cathode rays in 1879. fundamental in the development of atomic physics. -
Joseph John Thomson
He was an english physicist who helped revolutionize the knowledge of atomic structure by his discovery of the electron. -
Robert Millikan
He is particularly well known for his highly accurate determination of the magnitude of the electron's charge using the oil-drop experiment. -
Ernest Rutherford
He was a New Zealand physicist who came to be known as the father of nuclear physics, he discovered the nucleus of the atom in 1911. -
Henry Gwyn Jeffreys Moseley
Henry Moseley demonstrated that the major properties of an element are determined by the atomic number, not by the atomic weight and prove that every element's identity is uniquely determined by the number of protons it has. -
Niels Bohr
He was a Danish physicist who contributes to the understanding of the atom and quantum mechanics. He was awarded the Nobel Prize in Physics. -
Erwin Schrodinger
Erwin Schrodinger contributed to the wave theory of matter and to other fundamentals of quantum mechanics. He belief that atomic spectra should really be determined by some kind of eigenvalue problem. -
James Chadwick
Chadwick made a fundamental discovery in the domain of nuclear science, he proved the existence of neutrons-elementary particles devoid of any electrical charge.
