Archimedean Screw (3rd CenBC)
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Archimedes (Greece)
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Atom Bomb(1945)
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J.Robert Oppenheimer (U.S)
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Atomic Theory (1809)
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Dalton (England)
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Atomatic Rifle (1918)
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John Browning (U.S)
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Avogadro's Hypothesis (1811)
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Avogadro (Italy)
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Ballistic Missile (1944)
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Wernher von Braun (Germany)
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Balloon (1783)
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Jacques and Joseph Montgolfier (France)
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Ball-Point Pen (1888)
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Jhon J. Loud (U.S)
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Barometer (1644)
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Evangelista Torricelli (Italy)
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Battery (Electric) (1800)
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Alessandro Volta (Italy)
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Bifocal Lens(1780)
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Benjamin Franklin(U.S)
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Boson (1950)
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S.N.Bose (India)
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Boyle's Law (1662)
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Boyle (Ireland)
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Braille (1829)
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Louis Braille (France)
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Bunsen Burner (1855)
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R Willhelm won Bunsen (Germany)
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Carburettor (1876)
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Gottlieb Daimler (Germany)
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Cellophane (1908)
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Dr. J Brandenberger (Switzerland)
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Celluloid (1861)
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Alexander Parkes (England)
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Chronometer (1735)
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John Harrison (England)
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Cinema (1895)
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Nicolas and Jean Lumiere (England)
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Computer (1824)
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Dr. Alan M. Turing (England)
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Dynamite (19th cen.)
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Alfred Nobel (Germany)
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Electric Flat Iron (1882)
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H.W.Seeley (U.S)
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Electric Furnace (1861)
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William Siemens (England)
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Electric Lamp (1879)
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Thomas Alva Edison (U.S)
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Electro-Magnet (1824)
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William Sturgeon (Britain)
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Film(Movie) (1885)
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Louis Prince (France)
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Film(Talkie) (1922)
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J.Engl,J.Mussolle & H.Vogt(Germany)
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Fountain Pen (1884)
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Waterman(U.S)
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Frequency Modulation-FM(1933)
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E.H.Armstrong(U.S)
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Galvanometer (1834)
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Andre-Marie Ampere (France)
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Glider(1853)
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Sir George Cayley (Britain)
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Gyro-compass(1911)
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Elmer A. Sperry(U.S)
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Holography (1947)
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Denis Gason (England)
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Hydrogen Bomb (1952)
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Edward Teller (U.S)
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Isolation of metals by electricity(c. 1800)
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Davy (England)
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Laser (1960)
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T.H.Maimah (U.S)
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Launderette (1934)
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J.F. Cantrell (U.S)
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Lightning Conductor (1752)
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Benjmin Franklin (U.S)
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Linoleum (1860)
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Frederick Walton (England)
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Loudspeaker (1900)
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Horace Short (England)
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Magnetic Recording Tape (1928)
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Fritz Pfleumer (Germany)
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Microphone (1876)
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Alexander Graham Bell (U.S)
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Micro-processor (1971)
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Robert Noyce&Gordon Moore (U.S)
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Microscope (1590)
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Z.Janssen (Netherlands)
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Microwave Oven (1947)
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Percy I. Spencer (U.S)
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Neon Lamp (1910)
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Georges Claude(France)
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Neutron bomb (1958)
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Samuel Cohen (U.S)
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North Pole (1909)
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Robert Peary (Cresson springs)
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Nylon (1937)
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Dr.Wallace H. Carothers (U.S)
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Optical Fibre (1955)
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Narinder Kapany (Germany)
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Photoelectric cell (1893)
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Julius Elster, Hans F. Geitel (Germany)
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Photography (on film) (1888)
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John Carbutt (U.S)
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Rayon (1883)
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Sir Joesph Swann (Britain)
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Refrigeration (1850)
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James Harrison, Alexander Catlin (U.S)
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Rubik Cube (1975)
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Prof. Emo Rubik (Hungary)
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Safety Match (1826)
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John Walker (Britain)
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Safety Pin (1849)
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Walter Hunt (U.S)
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Solar System (1540)
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Copernicus (Poland)
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South Pole (1912)
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Amundsen (Norway)
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Stainless Steel (1913)
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Harry Brearley (Britain)
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Steam Engine (condenser) (1765)
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James Watt (Britain)
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Telegraph (1787)
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M.Lammond (France)
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Telegraph Code (1837)
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Samuel F.B. Morse (U.S)
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Telescope (1608)
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Hans Lippershey (Netherlands)
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Television (1927)
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P.T. Fransworth (U.S)
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Transformer (1831)
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Micheal Faraday (England)
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Transistor (1948)
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Bardeen, Shockley&Brattain (U.S)
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Video Tape (1956)
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Charles Ginsberg (U.S)
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Watch (1462)
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Bartholomew Manfredi (Italy)
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West Indies (1492)
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Coloumbus (Italy)
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Xerography (c. 1930)
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Chester F. Carlson (Italy)
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Zip Fastener (1891)
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W.I. Judson (U.S)
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