Penemu "A"

A

• Vitaly Abalakov (1906–1986), Russia – camming devices, Abalakov thread (or V-thread) gearless ice climbing anchor
• Ernst Karl Abbe (1840–1905), Germany – Condenser (microscope), apochromatic lens, refractometer
• Carl Roman Abt (1850–1933), Switzerland – Abt rack railway system
• Hovannes Adamian (1879–1932), Armenia/Russia – tricolor principle of the color television
• Samuel W. Alderson (1914–2005), USA – Crash test dummy
• Alexandre Alexeieff (1901–1982) Russia/France – pinscreen animation (with his wife Claire Parker)
• Rostislav Alexeyev (1916–1980), Ukraine – ekranoplan
• Bruce Ames (born 1928), USA – Ames test (cell biology)
• Giovanni Battista Amici (1786–1863), Italy – Dipleidoscope, Amici prism
• Mary Anderson (1866–1953), United States – windshield wiper blade
• Momofuku Ando (1910–2007), Japan – Instant noodles
• Hal Anger (1920–2005), USA – a.o. Well counter (radioactivity measurements), gamma camera
• Anders Knutsson Ångström (1888–1981), Sweden – Pyranometer
• Ottomar Anschütz (1846–1907), Germany – single-curtain focal-plane shutter, electrotachyscope
• Hermann Anschütz-Kaempfe (1872–1931), Germany – Gyrocompass
• Virginia Apgar (1909–1974), USA – Apgar score (for newborn babies)
• Nicolas Appert (1749–1841), France – canning (food preservation) using glass bottles, see also Peter Durand
• Archimedes (c. 287–212 BC), Greece – Archimedes' screw
• Guido of Arezzo (c. 991–c. 1033), Italy – Guidonian hand, musical notation, see also staff (music)
• Ami Argand (1750–1803), France – Argand lamp
• Edwin Howard Armstrong (1890–1954), USA – FM radio
• William George Armstrong (1810–1900), UK – hydraulic accumulator
• Neil Arnott (1788–1874), UK – waterbed
• Joseph Aspdin (1788–1855), UK – Portland cement
• John Vincent Atanasoff (1903–1995), Bulgaria/USA – modern digital computer