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Kerala PSC General Science Book Study Materials Page 42
Book's First PageMri 1971 Damadian USA Neon Lamp 1910 George Claude France Neutron 1932 Chadwick Britain Neutron Bomb 1958 Samuel Cohan USA Nylon 1937 Dr Wallace H Carothers USA Optical Fibre 1955 Narinder Kapany Germany Paper AD 105 - China Pacemaker 1952 Zoll USA is Pasteurization 1867 Lewis Pasteur France Pencil 1792 Lacques Nicolas Conte France Periodic Table 1869 Mendeleyev Russia Photocopier 1938 Carlson USA Photoelectric Cell 1893 Julius Elster, Hans F Geitel Germany Photo Film, Celluloid 1893 Reichenbach USA Photo Film, Transparent 1884 Goodwin Eastman USA Photography (On Metal) 1826 J.N. Niepce France Photography (On Paper) 1835 W.H. Fox Talbot Britain Photography (On Film) 1888 John Carbutt USA Piano 1709 Cristofori Italy Pistol, Revolver 1836 Colt USA Plutonium Fission 1940 Kennedy, whal,Seaborg,Segre USA Pop-Up Toaster 1927 Charles Strite USA Printing Press 1455 Johann Gutenberg Germany Printing (Rotatory) 1846 Richard Hoe USA Printing (Web) 1865 William Bullock USA Proton 1919 Rutherford New Zealand Quantum Theory 1900 Plank Germany Radar 1922 AH Taylor and Leo C Young USA Radiocarbon Dating 1947 Libby USA Radio Telegrapy 1864 Dr Mohlon Loomis USA Radio Telegrapy (Trans- 1901 G Marconi Italy Atlantic) Rayon 1883 Sir Joseph Swan Britain Razor (Electric) 1931 Col Jacob Schick USA Razor (Safety) 1895 King C Gillette USA Refrigerator 1850 James Harrison, Alexandre USA catlin Relativity Theory 1905 Einstein Germany Rubber (Latex Foam) 1928 Dunlop Rubber Co. Britain Rubber (Tyres) 1846 Thomas Hancock Britain Rubber (Vulcanised) 1841 Charles Goodyear USA Rubber (Waterproof) 1823 Charles Macintosh Britain Safety Pin 1849 Walter Hunt USA Safety Razor 1903 King camp Gillette USA Seatbelt 1959 Volvo Sweden Self-Starter 1911 Charles F Kettering USA Ship (Steam) 1775 IC Perier France Ship (Turbine) 1894 Hon Sir C Parson Britain Silk Manufacture 50 BC - China Skyscraper 1882 W Le Baron Jenny USA Slide Rule 1621 William Oughtred Britain Spinning Frame 1769 Sir Richard Arkwright Britain 41