Important scientists

 

D

 Louis Daguerre (1789 - 1851)  chemist  daguerrotype photography process
 Gottlieb Daimler (1834 - 1900)  motor car pioneer  inventor of carburettor (see also Maybach)
 Henry Dale (1875 - 1968)  pharmacologist  neurotransmission, acetylcholine (with Loewi)
 Nils Dalen (1869 - 1937)  physicist  inventor of AGA cooker, Dalen light, sun valve
 John Dalton (1766 - 1844)  chemist  atomic theory, dalton unit of atomic size
 Reginald Daly (1871 - 1957)  geologist  theory of igneous rocks
 Henrik Dam (1895 - 1976)  biochemist  role of vitamin K in human physiology (with Doisy)
 Raymond Dart (1893 - 1988)  anthropologist  discovered Australopithecus
 Charles Darwin (1809 - 1882)  naturalist  theory of evolution; origin of species
 Jean Dausset (1916 - 2009)  immunologist  major histocompatibility complex (with Benacerraf, Snell)
 Edgeworth David (1858 - 1934)  geologist  geology of Australia and Antarctic exploration
 Paul Davies (1946 - )  theoretical physicist  cosmic background radiation
 Raymond Davis (1914 - 2006)  physicist  solar neutrinos, Homestake experiment (with Giacconi, Koshiba)
 Clinton Davisson (1881 - 1958)  physicist  electron diffraction (with Thomson)
 Humphry Davy (1778 - 1829)  chemist  Davy miner's safety lamp
 Richard Dawkins (1941 - )  biologist  Darwin supporter, gene-centred evolution
 Peter Debye (1884 - 1966)  chemist  Debye model of specific heat, X-ray diffraction
 Hans Dehmelt (1922 - )  physicist  ion trap (with Paul)
 Johann Deisenhofer (1943 - )  biochemist  X-ray crystallography, photosynthetic reaction center (with Huber, Michel)
 Max Delbruck (1906 - 1981)  geneticist  antibiotic resistance, mutation, phage (with Hershey, Luria)
 Democritus (460 - 370BC)  philosopher  first theory of atoms
 Abraham DeMoivre (1667 - 1754)  mathematician  trigonometry, statistics
 Rene Descartes (1596 - 1650)  mathematician  geometry
 David Deutsch (1953 - )  physicist  quantum computer
 Robert Dicke (1916 - 1997)  physicist  gravitation theory
 Otto Diels (1876 - 1954)  chemist  Diels-Alder reaction, cycloaddition (with Alder)
 Rudolf Diesel (1858 - 1913)  engineer  diesel engine
 Paul Dirac (1902 - 1984)  physicist  fermions, Dirac equation
 Jeremiah Dixon (1733 - 1779)  astronomer  Mason-Dixon Line (see also Mason)
 Carl Djerassi (1923 - )  chemist  oral contraceptive
 Theodosius Dobzhansky (1900 - 1975)  geneticist  evolutionary biology
 Peter Doherty (1940 - )  biochemist  T-cells, MHC antigen, immunology, viruses (with Zinkernagel)
 Edward Doisy (1893 - 1986)  biochemist  role of vitamin K in human physiology (with Dam)
 Gerhard Domagk (1895 - 1964)  bacteriologist  first commercial antibiotic Prontosil
 Christian Doppler (1803 - 1853)  physicist  Doppler effect
 Frank Drake (1930 - )  astronomer  SETI founder
 John Draper (1811 - 1882)  photochemist  Draper point
 Eugene Dubois (1858 - 1940)  paleoanthropologist  discovered Homo erectus
 Renato Dulbecco (1914 - )  virologist  reverse transcriptase (with Baltimore, Temin)
 Pierre-Louis Dulong (1785 - 1838)  physicist  Dulong-Petit Law of specific heat
 John Dunlop (1840 - 1921)  inventor  inflatable rubber tyre
 Christian de Duve (1917 - )  biochemist  structure of organelles, vacuole (with Claude, Palade)
 Freeman Dyson (1923 - )  physicist  cosmology