NEW! SSC CGL Notes | CGL Papers PDF
Study Material for SSC CGL, CHSL, MTS, Prasar Bharti, FCI Exams : General Science
General Science
Inventions & Discoveris
Invention Year Inventor Country Acetylene gas 1862 Berthelot France Adding machine 1642 Pascal France Adhesive tape,Scotch 1930 Richard Drew U.S.A. Aeroplane 1903 Orville & Wilbur Wright U.S.A. Air Conditioning 1902 Carrier U.S.A. Airplane, jet engine 1939 Ohain Germany Airship (non-rigid) 1852 Henri Giffard France Aerosol spray 1926 Erik Rotheim Norway Artificial Heart 1957 Willem Kolff Netherlands Atomic Bomb 1945 J. Robert Oppenheimer U.S.A. Atomic numbers 1913 Moseley Britain Atomic theory 1803 Dalton Britain Automatic rifle 1918 John Browning U.S.A. Bakelite 1907 Leo H. Baekeland Belgium Ballistic missile 1944 Wernher von Braun Germany Balloon 1783 Jacques & Joseph Montgolfier France Ball-Point Pen 1888 John J. Loud U.S.A. Barometer 1644 Evangelista Torricelli Italy Battery (Electric) 1800 Alessandro Volta Italy Bicyle 1839-40 Kirkpatrick Macmillan Britain Bicycle Tyres (Pneumatic)1888 John Boyd Dunlop Britain Bifocal Lens 1780 Benjamin Franklin U.S.A Bleaching Powder 1798 Tennant Britain
Milestones in Medicin
Discovery/Invention Year Discoverer/Inventor Country Adrenaline 1894 Schafer and Oliver Britain Anesthesia, Local 1885 Koller Austria Anesthesia, Spinal 1898 Bier Germany Anti-toxins (Science of Immunity) 1890 Behring & Kitasato Germany, Japan Aspirin 1889 Dreser Germany Bacteria 1683 Leeuwenhock Netherlands Bacteriology 1872 Ferdinand Cohn Germany Biochemistry 1648 Jan Baptista Van Helmont Belgium Blood Plasma storage (Blood bank) 1940 Drew U.S.A. bank Blood Transfusion 1625 Jean-Baptiste Denys France Cardiac Pacemaker 1932 A, S. Hyman U.S.A. CAT Scanner 1968 Godfrey Hounsfield Britain Chemotherapy 1493-1541 Paracelsus Switzerland Chloroform as anaesthetic 1847 James Simpson Britain Chloromycetin 1947 Burkholder U.S.A. Cholera T.B germs 1877 Robert Koch Germany Circulation of blood 1628 William Harvey Britain Cryo-Surgery 1953 Henry Swan U.S.A. Diphtheria germs 1883-84 Klebs & Loffler Germany Electro-Cardiograph 1903 Willem Einthoven Netherlands Electro-encephalogram 1929 Hand Berger Germany