Scientists, inventors and mathematicians
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- D'Alembert's formulaIn mathematics, and specifically partial differential equations (PDEs), d´Alembert's formu
- Daguerre (crater)Daguerre is a circular formation near the north end of Mare Nectaris. To the west-northwes
- Daniel BernoulliSwiss mathematician and physicist (1700–1782)
- Darwin MedalMedal awarded by the Royal Society
- Darwin–Fowler methodIn statistical mechanics, the Darwin–Fowler method is used for deriving the distribution f
- Darwin–Wallace MedalMedal awarded by the Linnean Society
- David Breed BeardDavid Breed Beard (1 February 1922, Needham, Massachusetts – 21 January 1998, Portland, Ma
- David FairchildDavid Grandison Fairchild (April 7, 1869 – August 6, 1954) was an American botanist and pl
- David H. FrischDavid Henry Frisch (March 12, 1918 – May 23, 1991) was an American physicist who helped de
- David HilbertGerman mathematician (1862–1943)
- David M. LemalDavid Markham Lemal (born 1934) is the Albert W. Smith Professor of Chemistry Emeritus and
- Dead space (physiology)Dead space is the volume of air that is inhaled that does not take part in the gas exchang
- Dean of RiponThe Dean of Ripon is a senior cleric in the Church of England Diocese of Leeds. The dean i
- Delbrück scatteringDelbrück scattering, the deflection of high-energy photons in the Coulomb field of nuclei
- Dennis RitchieAmerican computer scientist known for Unix (1941–2011)
- Dennis T. AveryDennis Teel Avery (October 24, 1936 – June 20, 2020) was the director of the Center for Gl
- Deutz AGDeutz AG is a German internal combustion engine manufacturer, based in Porz, Cologne, Germ
- Diederik KortewegDiederik Johannes Korteweg (31 March 1848 – 10 May 1941) was a Dutch mathematician. He is
- Diffused junction transistorA diffused junction transistor is a transistor formed by diffusing dopants into a semicond
- Dimitrie PompeiuDimitrie D. Pompeiu (Romanian: ; 4 October [O.S. 22 September] 1873 – 8 October 1954) was
- Dionysius LardnerDionysius Lardner FRS FRSE (3 April 1793 – 29 April 1859) was an Irish scientific writer w
- Diophantus3rd-century Greek mathematician
- Donald B. GilliesDonald Bruce Gillies (October 15, 1928 – July 17, 1975) was a Canadian computer scientist
- Donald KnuthAmerican computer scientist and mathematician (born 1938)
- Dorothy HodgkinEnglish chemist (1910–1994)
- Douglas EngelbartAmerican engineer and inventor (1925–2013)
- DreikönigsgymnasiumThe Dreikönigsgymnasium ("Tricoronatum", meaning "Three Kings School", sometimes referred
- DyadicsIn mathematics, specifically multilinear algebra, a dyadic or dyadic tensor is a second or