Name: John Dalton Contribution: Dalton developed the Atomic Theory of Matter Process: Dalton first focused on describing color blindness which in turn led to the discovery of Atomic Theory of Matter. Vital statistics: Date of Birth: September 6 th 1766 Date of Contribution: 1803 Date of Death: 1844 Place of Birth: Eagles field Cumberland Where contribution was made: England Who married and when: n / a Children: n / a Human Interest: He is remembered as one of the fathers of modern physical science. Name: Niels Bohr Contribution: atomic structure and quantum mechanics Process: First Bohr studied with Rutherford and they found out the basic structure of an atom and then Bohr built on that information. Vital statistics: Date of Birth: 1855 Date of Contribution: 1913 Date of Death: November 18 th 1962 Place of Birth: Copenhagen, Denmark Where contribution was made: Manchester Who married and when: in 1912, to Margrethe Nor lund Children: 6 Human Interest: Nobel Prize in Physics in 1922 Name: De Broglie Contribution: WAVE MECHANICS Process: De Broglie saw a contradiction in Einstein's theory and worked from there. Vital statistics: Date of Birth: August 15 th, 1892 Date of Contribution: 1923 Date of Death: 1987 Place of Birth: Dieppe Seine Inf " erie ure Where contribution was made: University of Paris Who married and when: n / a Children: n / a Human Interest: Noble Prize in Physics in 1929 Name: Democritus Contribution: Atomic Theory Process: he learned most of it from his teacher Leucippus Vital statistics: Date of Birth: 460 BC Date of Contribution: ? Date of Death: about 370 BC Place of Birth: Ab dera Where contribution was made: Greece Human Interest: he has been called "the Laughing Philosopher." Name: Heisenberg Contribution: The Theory of Quantum Mechanics / allotropic forms of hydrogen Process: Vital statistics: Date of Birth: Dec 5 th 1901 Date of Contribution: 1925 Date of Death: Feb 1976 Place of Birth: W"urzburg, Germany Where contribution was made: Germany Who married and when: In 1937 Heisenberg married Elisabeth Schumacher Children: 7 Human Interest: Nobel Prize in Physics in 1932 Name: Mendeleev Contribution: arranging 63 known elements into a periodic table Process: based on the mass of the elements he arranged them in the periodic table. Vital statistics: Date of Birth: 1834 Date of Contribution: 1869 Date of Death: 1907 Place of Birth: Russia Where contribution was made: Russia Who married and when: n / a Children: n / a Human Interest: "Father of the Periodic Table" Name: Millikan Contribution: He determined the charge of an electron Process: He did his famous charge drop experiment Vital statistics: Date of Birth: 22 nd of March, 1868 Date of Contribution: 1909 Date of Death: 1953 Place of Birth: Morrison, Ill.

(U. S. A. ) Where contribution was made: USA Who married and when: Greta Erwin Blanchard in 1902 Children: Clark Blanchard, Glenn Allen, and Max Franklin.

Human Interest: Nobel Prize in Physics in 1923 Name: Planck Contribution: Formulated the revolutionary quantum theory of radiation, Process: Used his work on the second law of thermodynamics and blackbody radiation Vital statistics: Date of Birth 23 April, 1858 Date of Contribution: 1900 Date of Death: Oct 3 rd, 1947 Place of Birth: Kiel, Germany Where contribution was made: Germany Who married: Marie Merck Marga von H"ossein Children: Karl, Emma, Margarete and Erwin Human Interest: he received a Nobel Prize in 1918. Name: Rutherford Contribution: he hypothesized the existence of the neutron. Process: used his work on radio activity Vital statistics Date of Birth: 1871 Date of Contribution: 1920 Date of Death: 1937 Place of Birth: New Zealand Where contribution was made: New Zealand Who married: Mary Newton 1900 Children: Eileen Human Interest: In 1908 he was awarded the Nobel Prize. Name: Thomson Contribution: He showed that cathode rays are rapidly moving particles, and by measuring their displacement by electric and magnetic fields. He determined that these particles were nearly 2, 000 times less massive than the lightest known atomic particle. Process: He measured their (the electrons) displacement by electric and magnetic fields Vital statistics: Date of Birth: 1856 Date of Contribution: 1897 Date of Death: 1940 Place of Birth: Cambridge Where contribution was made: England Who married and when: 1924 he married Kathleen Buchanan Children: 2 daughters and two sons Human Interest: Noble Prize Laureate.