1. Gustaf Dalén, (1869–1937), Sweden– AGA cooker; Dalén light; Agamassan
2. Salvino D'Armate, (1258–1312),Italy – credited for inventing eyeglasses in 1284
3. Leonardo da Vinci, (1452–1519), Italy – conceptualized a helicopter, a tank, concentrated solar power, the
double hull. Relatively few of his designs were constructed during his lifetime. Some that were used are an
automated bobbin winder and a machine for testing the tensile strength of wire
4. Corradino D'Ascanio, (1891–1981), Italy – D'AT3 helicopter; Vespa scooter
5. Jacob Davis, (1868–1908), U.S. – riveted jeans
6. Edmund Davy, (1785–1857), Ireland – acetylene
7. Humphry Davy, (1778–1829), UK – Davy miners lamp
8. Joseph Day, (1855–1946), UK – the crankcase-compression two-stroke engine
9. Lee DeForest, (1873–1961), U.S. – triode
10. Vasily Degtyaryov, (1880–1949), Russia – first self-loading carbine, Degtyaryov-series firearms, co-
developer of Fedorov Avtomat
11. Akinfiy Demidov, (1678–1745), Russia – co-developer of rebar, cast iron dome, lightning rod (all found in
the Leaning Tower of Nevyansk)
12. Yuri Nikolaevich Denisyuk, (1927– 2006), Russia – 3D holography
13. Miksa Deri (1854–1938), Hungary – co-inventor of an improved closed- core transformer
14. James Dewar, (1842–1923), UK – Thermos flask
15. Aleksandr Dianin, (1851–1918), Russia – Bisphenol A, Dianin's compound
16. William Kennedy Laurie Dickson, (1860–1935), UK – motion picture camera
17. Philip Diehl, (1847–1913), U.S. – Ceiling fan, electric sewing machine
18. Rudolf Diesel, (1858–1913),Germany – Diesel engine
19. Al-Dinawari, (828–896), Persia/Iran – more than a hundred plant drugs
20. William H. Dobelle, (1943–2004), United States – first functioning artificial eye
21. Ray Dolby, (1933–2013), U.S. – Dolby noise-reduction system
22. Mikhail Dolivo-Dobrovolsky, (1862– 1919), Poland/Russia – three-phase electric power (first 3-phase
hydroelectric power plant, 3-phase electrical generator, 3-phase motor and 3-phase transformer)
23. Nikolay Dollezhal, (1899–2000), Russia – AM-1 reactor for the 1st nuclear power plant, other RBMK
reactors, VVER pressurized water reactors
24. Bryan Donkin, (1768–1855), UK – print industry composition roller
25. Hub van Doorne, (1900–1979), Netherlands, Variomatic continuously variable transmission
26. Anastase Dragomir, (1896–1966), Romania – Ejection seat
27. Karl Drais, (1785–1851), Germany – dandy horse (Draisine)
28. Cornelius Drebbel, (1572–1633), The Netherlands – first navigable submarine
29. Richard Drew, (1899–1980), U.S. – Masking tape
30. John Boyd Dunlop, (1840–1921), UK – first practical pneumatic tyre
31. Cyril Duquet, (1841–1922), Canada – Telephone handset
32. Alexey Dushkin, (1904–1977), Russia – deep column station
33. James Dyson, (1947–), UK – Dual Cyclone bagless vacuum cleaner, incorporating the principles of
cyclonic separation.
2. Salvino D'Armate, (1258–1312),Italy – credited for inventing eyeglasses in 1284
3. Leonardo da Vinci, (1452–1519), Italy – conceptualized a helicopter, a tank, concentrated solar power, the
double hull. Relatively few of his designs were constructed during his lifetime. Some that were used are an
automated bobbin winder and a machine for testing the tensile strength of wire
4. Corradino D'Ascanio, (1891–1981), Italy – D'AT3 helicopter; Vespa scooter
5. Jacob Davis, (1868–1908), U.S. – riveted jeans
6. Edmund Davy, (1785–1857), Ireland – acetylene
7. Humphry Davy, (1778–1829), UK – Davy miners lamp
8. Joseph Day, (1855–1946), UK – the crankcase-compression two-stroke engine
9. Lee DeForest, (1873–1961), U.S. – triode
10. Vasily Degtyaryov, (1880–1949), Russia – first self-loading carbine, Degtyaryov-series firearms, co-
developer of Fedorov Avtomat
11. Akinfiy Demidov, (1678–1745), Russia – co-developer of rebar, cast iron dome, lightning rod (all found in
the Leaning Tower of Nevyansk)
12. Yuri Nikolaevich Denisyuk, (1927– 2006), Russia – 3D holography
13. Miksa Deri (1854–1938), Hungary – co-inventor of an improved closed- core transformer
14. James Dewar, (1842–1923), UK – Thermos flask
15. Aleksandr Dianin, (1851–1918), Russia – Bisphenol A, Dianin's compound
16. William Kennedy Laurie Dickson, (1860–1935), UK – motion picture camera
17. Philip Diehl, (1847–1913), U.S. – Ceiling fan, electric sewing machine
18. Rudolf Diesel, (1858–1913),Germany – Diesel engine
19. Al-Dinawari, (828–896), Persia/Iran – more than a hundred plant drugs
20. William H. Dobelle, (1943–2004), United States – first functioning artificial eye
21. Ray Dolby, (1933–2013), U.S. – Dolby noise-reduction system
22. Mikhail Dolivo-Dobrovolsky, (1862– 1919), Poland/Russia – three-phase electric power (first 3-phase
hydroelectric power plant, 3-phase electrical generator, 3-phase motor and 3-phase transformer)
23. Nikolay Dollezhal, (1899–2000), Russia – AM-1 reactor for the 1st nuclear power plant, other RBMK
reactors, VVER pressurized water reactors
24. Bryan Donkin, (1768–1855), UK – print industry composition roller
25. Hub van Doorne, (1900–1979), Netherlands, Variomatic continuously variable transmission
26. Anastase Dragomir, (1896–1966), Romania – Ejection seat
27. Karl Drais, (1785–1851), Germany – dandy horse (Draisine)
28. Cornelius Drebbel, (1572–1633), The Netherlands – first navigable submarine
29. Richard Drew, (1899–1980), U.S. – Masking tape
30. John Boyd Dunlop, (1840–1921), UK – first practical pneumatic tyre
31. Cyril Duquet, (1841–1922), Canada – Telephone handset
32. Alexey Dushkin, (1904–1977), Russia – deep column station
33. James Dyson, (1947–), UK – Dual Cyclone bagless vacuum cleaner, incorporating the principles of
cyclonic separation.
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