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Democritus
His theory was that everything was made up atoms in which are physically, but not geometrically, indivisible. -
Robert Boyle 5
Robert was born on January 25, 1627 and died in 1691. He was alive when the british monarchy was being re-established. HIs first chief interest was chemistry -
Antoine Lavoisier
French nobleman and chemist, also had a huge a huge influence on history and chemistry. He also proved the phlogiston theory. -
John Dalton
He viewed atomism by way of meteorology, in which he was seriously interested for a long period of time. He also kept daily weather records from 1787 until he died. -
Dmitri Mendeleev
Mendeleev was best known for his work on the periodic table. He arranged the 63 known elements into a Periodic Table based on atomic mass. -
Eugen Goldstein
He is a german physicist known for his work on electrical phenomena in gases and on cathode rays. He was also credited for discovering canal rays. -
J.J. Thomson
He discovered the electron in an experiment designed to study the nature of electric discharge in a high-vacuum cathode-ray tube, an area that was being investigated by alot of scientists at the time. -
Max Planck
He is a German physicist who formulated an equation describing the blackbody Eric Weisstein's World of Physics spectrum in 1900. Planck believed that quantization applied only to the absorption and emission of energy by matter, not to electromagnetic waves themselves. -
Robert Millikan
Millikan made alot of discoveriesin his lifetime, mainly in the fields of electricity, optics, and molecular physics. His earliest major success was the accurate determination of the charge carried by an electron, using the "falling-drop method". He also proved that this quantity was a constant for all electrons. -
Ernest Rutherford
He made a lot of discoveries in the fields of radioactivity and nuclear physics. He discovered alpha and beta rays, set forth the laws of radioactive decay, and identified alpha particles as helium nuclei. -
Niels Bohr
He proposed a successful quantum model of the atom in 1913. His model said that the electron exists at precise distances from the nucleus and as long as an electron remains in one location, no energy is given off and also electrons have circular orbits. -
Erwin Schrodinger
He is best known for the work for which he was best known for, wave mechanics. He provided a theoretical basis for the atomic model that Niels Bohr had proposed based on lab evidence. -
James Chadwick
Rutherford succeeded in disintegrating atoms by bombarding nitrogen with alpha particles, with the emission of a proton. This was the first artificial nuclear transformation in history
