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            A
            - B
            
            
               - Al-Khwarizmi,
               Muhammad
 
               (around 770), Mathematics, Persia 
               Mathematician - algebra 
                
               
               - Alvarez, Luis
 
               (1911- ) Physics, United States of America 
               Liquid hydrogen bubble chamber. 
                
               
               - Armstrong, Neil
 
               (1930 - ) Astronaut, United States of America 
               First man to walk on the moon. 
                
               
               - Avicenna
 
               (980 - 1037) Chemistry 
               Early chemist or alchemist 
                
               
               - Babbage, Charles
 
               (1792 - 1871) Mathematics, England 
               Inventor of the first digital computer. 
                
               
               - Bacon, Roger
 
               (1220-1292) Mathematics, England 
               He was an early advocate for "the scientific
               method". 
                
               
               - Bailey, Liberty
 
               (1858 - 1954) Botany, United States of America 
               He helped to establish horticulture as an academic
               discipline. 
                
               
               - Bell, Alexander Graham
 
               (1847 - 1922) Technology, Scotland 
               Inventor of the telephone. 
                
               
               - Berthelot, Marcelin
 
               (1827 - 1907) Chemistry, France 
               Research into the properties of alcohols and
               acids. 
                
               
               - Blackwell, Elizabeth
 
               (1821-1910) Medicine, United States of America 
               First woman doctor in the United States of
               America. 
                
               
               - Bluford, Guion
 
               (1942-) Astronaut, United States of America 
               First Black astronaut in space. 
                
               
               - Bohr, Niels
 
               (1885 - 1962) Physics, Holland 
               Theoretical work in nuclear physics. 
                
               
               - Boole, George 
 
               (1815-1964) Mathematics, England 
               Invented Boolean algebra 
                
               
               - Brache, Tycho
 
               (1546 - 1601) 
               Planetary motion. 
                
               
               - Bunsen, Robert
 
               (1811 - 1899) Chemistry, Germany 
               Experimental chemistry. 
                
               
               - Burbank, Luther
 
               (1849-1926) Botanist, United States of America 
               Plant genetics. 
             
            
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            C
            - D
            
            
               - Carson, Rachel
 
               (1907 - 1964) Ecology, United States of America 
               Interdependence of plants and animals, pesticides in
               the environment. 
                
               
               - Carver, George
               Washington
 
               (1864 - 1943) Biochemistry, United States of
               America 
               Uses for peanuts, sweet potatoes, and studies in soil
               sciences. 
                
               
               - Chardin, Pierre
 
               (1898 - 1946) 
               Geologist 
                
               
               - Copernicus, Nicolaus
 
               (1473 - 1532) 
               Astronomy 
                
               
               - Cruz, Oswaldo
 
               (1872 - 1914) Medicine, Argentina 
               Bacteriologist 
                
               
               - Curie, Marie
 
               (1867 - 1934) Chemistry, Poland 
               Discoverer of radium and polonium. 
                
               
               - Darwin, Charles
 
               (1809 - 1882) Biology, England 
               Theory of Evolution 
                
               
               - DaVinci, Leonardo
 
               (1452 - 1519) Medicine, Italy 
               Human anatomy drawings 
                
               
               - Davy, Humphry
 
               (1778-1829) Chemistry, England 
               Inventor of miner's safety lamp. 
                
               
               - Drew, Charles
 
               (1904 - 1950), Medicine, Unites States of America 
               Blood transfusions 
                
               
               - du Chatele, Emilie
 
               (1706 - 1784) Mathematics, France 
               Mathematician 
                
             
            
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            E
            - F
            
            
               - Einstein, Albert
 
               (1879-1955) Physics, Germany 
               Theory of Relativity 
                
               
               - Fermi, Enrico
 
               (1901 - 1954) Physics, Italian-America 
               Noted for work with nuclear reactions. 
                
               
               - Fleming, Alexander
 
               (1881 - 1955) Medicine 
               Discovery of penicillin 
                
               
               - Focault, Jean
 
               (1819 - 1868) Physics, France 
               Law of Pendulum. 
                
               
               - Fossey, Dian
 
               (1932 - ) Biology, United States of America 
               Studies of gorillas 
                
               
               - Franklin, Benjamin
 
               (1706 - 1790) Physics, United States of America 
               Noted for experiments with electricity. 
                
               
               - Franklin, Rosalind
 
               (1920 - 1958) 
               Structure of DNA 
                
             
            
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            G
            - H
            
            
               - Gagarin, Yury
 
               (1934 - 1968) Astronaut, Russia 
               First man in space. 
                
               
               - Galileo, Galilei
 
               (1564 - 1642) One of the inventors of the
               telescope. 
                
               
               - Goodall, Jane
 
               (1934 - ) 
               Animal behavior studies 
                
               
               - Hamilton, Alice
 
               (1869 - 1970) Medicine, United States of America 
               Established the field of industrial medicine. 
                
               
               - Haro, Guillermo
 
               (1913 - 1988) 
               Astronomer 
                
               
               - Harriot, Thomas
 
               (1560 - 1613) Physics, England 
               Laws of Optics 
                
               
               - Harvey, William
 
               (1578 - 1657) 
               Circulatory system. 
                
               
               - Hawking, Stephen
 
               (1942 - ) Astronomy 
               Contributions in astronomy include concepts associated
               with black holes. 
                
               
               - Henson, Matthew
 
               (1886 - 1955) 
               Polar exploration 
                
               
               - Henry, Joseph
 
               (1797 - 1878) 
               Founder the Academy of Sciences 
                
               
               - Hippocrates
 
               (460 - 377 BC), Greece 
               Contributions in medicine. 
                
               
               - Hodgkin, Dorothy C.
 
               (1910 - 1947) Chemistry 
               Work in crystallography 
                
               
               - Hopper, Grace
 
               (1870 - 1992) Mathematics, United States of
               America 
               Pioneer in the area of computer development. 
                
               
               - Hoffman, Felix
 
               (1867 - 1931) Chemistry, Germany 
               Discoverer of aspirin 
                
               
               - Hubble, Edwin
 
               (1889 - 1953) Astronomy, United States 
               Classification of galaxies 
                
               
               - Hyde, Ida
 
               (1854 - 1945) Medicine, United States of America 
               Inventor of the microelectrode. 
                
               
               - Hypatia
 
               (370 - 415) Mathematics, Greece 
               Neoplatonic school in Alexandria, believed to be first
               woman scientist. 
             
            
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            I-
            J
            
            
            
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            K
            - L
            
            
               - Kaufman, Joyce
 
               (1929 - ) Chemist, United States of America 
               Three-dimensional quantum chemical calculations. 
                
               
               - Kelvin, William
 
               (1824-1907) Physics, Ireland 
               Work in thermodynamics. 
                
               
               - Kepler, Johannes
 
               (1571 - 1630) Physics, Germany 
               Studies of planetary motion. 
                
               
               - King, Mary-Claire
 
               (1946 - ) 
               Genetic mapping 
                
               
               - Koch, Robert
 
               (1843-1910) Bacteriology, Germany 
               Founder of field of bacteriology. 
                
               
               - Kovaleskaya, Sofia
 
               (1856-1891), Mathematics, Russia 
               Differential equations 
                
               
               - LaFlesche, Susan
 
               (1854 - 1903) Medicine, United States of America 
               Founder of field of culturally syntonic medicine. 
                
               
               - Lamme, Bertha
 
               (1869 - 1954) Engineering, United States of
               America 
               Theory and design or motors and generators. 
                
               
               - Latimer, Lewis
 
               (1848 - 1928) Physics, United States of America 
               Carbon filament for the electric light bulb. 
                
               
               - Leavitt, Henrietta
 
               (1868 - 1921) Astronomy, United States of America 
               Photographic magnitude of stars. 
                
               
               - LeConte, Joseph
 
               (1823 - 1901), Field Biology, United States of
               America 
               Founder of Sierra Club 
                
               
               - Lim, Robert Kho-Seng
 
               (1897 - 1969) Physiologist, Singapore 
               Nerve receptors are chemosensitive. 
                
               
               - Lister, Joseph
 
               (1827 - 1912) Medicine, England 
               Germ theory of disease. 
                
               
               - Lovelace, Ada
 
               (1815 - 1852) 
               Mathematician - analytical engine 
                
               
               - Lovelock, James
 
               (1919 - ) Astronomy, England 
               Gaia Hypothesis 
                
               
               - Lyell, Charles
 
               (1797 - 1875) Geology, Scotland 
               Principles of geology. 
                
             
            
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            M
            - N
            
            
               - Maury, Antonia
 
               (1866 - 1952) Physics, United States of America 
               Spectral analysis of northern stars. 
                
               
               - Mayer, Maria
 
               (1906 - 1992) 
               Quantum mechanics. 
                
               
               - McClintock, Barbara
 
               (1902 - 1995) Biology, United States of America 
               Behavior of chromosomes - jumping genes. 
                
               
               - Mendel, Gregor
 
               (1922 - 1884) Medicine, Czech Republic 
               Genetics research. 
                
               
               - Mitchell, Maria
 
               (1818 - 1889) 
               Astronomer 
                
               
               - Muir, John
 
               (1838 - 1914) 
               Conservationist 
                
               
               - Nash, John
 
               (1928 - ) Mathematics, United States of America 
               Theory of algebraic varieties 
                
               
               - Newton, Issac
 
               (1643 - 1727) 
               Laws of Motion 
                
               
               - Noyce, Robert
 
               (1927 - 1990) United States of America 
               Integrated circuit 
                
             
            
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            O
            - P
            
            
               - Oppenheimer, Robert
 
               (1904 - 1967) Physics, United States of America 
               Developer of atomic bomb. 
                
               
               - Pascal, Blaise
 
               (1623 - 1662) Mathematics, France 
               Developer of adding machine. 
                
               
               - Peebles, Florence
 
               (1874 - 1956) Biologist, United States of America 
               Hydra regeneration experiments. 
                
               
               - Perlmann, Gertrude
 
               (1912 - 1974) Biochemistry, Czechoslovakia 
               Protein chemistry - phosphate containing proteins. 
                
               
               - Planck, Max
 
               (1858 - 1947) Physics, Germany 
               Quantum theory. 
             
            
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            Q
            - R
            
            
               - Reed, Walter
 
               (1851-1902) Medicine, United States of America 
               Yellow fever research. 
                
               
               - Ride, Sally
 
               (1951 - ) Physics, United States of America 
               1st American woman in space 
                
               
               - Rubin, Vera
 
               (1928 - ) 
               Dark matter 
                
             
            
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            S
            - T
            
            
               - Sabin, Albert
 
               (1906 - ) Medicine, Russia 
               Polio vaccine 
                
               
               - Sagan, Carl
 
               (1934 - 1996) 
               Astronomer, author of Cosmos 
                
               
               - Salk, Jonas
 
               (1914 - 1996) Medicine, United States of America 
               Polio vaccine development. 
                
               
               - Seaborg, Glenn
 
               (1912 - 1999) Physics, United States of America 
               Discovered 10 transuranium elements 
                
               
               - Shepard, Alan
 
               (1923-) Astronaut, United States of America 
               First American in space. 
                
               
               - Teller, Edward
 
               (1908 - ) Physics, Hunary 
               Manhattan project 
                
               
               - Tereshkova, Valentina
 
               (1937-) Astronaut, Russia 
               First woman in space. 
                
               
               - Tesla, Nicola
 
               (1856 - ) 
               Induction motor 
                
               
               - Tsai Lun
 
               (circa 105 AD), Chemistry 
               Credited with invention of paper. 
                
             
            
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            U
            - V
            
            
               - Uhlenbeck,
               Karen
 
               (1942 - ) Mathematics, United States of America 
               Work on partial differential equations 
                
             
            
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            W
            - X
            
            
               - Watt, James
 
               (1736 - 1819) Physics, Scotland 
               Developed the steam engine. 
                
               
               - Wright, Wilbur
 
               (1867 - 1912) Aerodynamics, United States of
               America 
               First airplane flight 
                
               
               - Wrinch, Dorothy
 
               (1894 - 1980) Chemistry, Argentina 
               Specificity of gene residues in amino acids. 
                
               
               - Wu, Chien-Shiung
 
               (1912 - 1997) Physics, China 
               Parity conservation 
             
            
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            Y
            - Z
            
            
               - Yalow, Rosalyn
 
               (1921 - ) Physics, United States of America 
               Radio immunoassay. 
                
               
               - Zeno
 
               (circa 1515) 
               Polar exploration 
                
             
            
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