Important Discoveries

 Discovery Discoverer Year Nationality
 Aluminium Hans Christian Oerstedt 1827 Denmark
 Atomic number Henry Moseley 1913 England
 Atomic structure of matter John Dalton 1803 England
 Chlorine C.W. Scheele 1774 Sweden
 Chromium Louis Vauquelin 1798 France
 Electromagnetic induction Michael Faraday 1831 England
 Eletromagnetic Waves Heinrich Hertz 1886 Germany
 Electromagnetism Hans Christian Oersted 1920 Denmark
 Electron Sir Joseph Thomson 1897 England
 General theory of relativity Albert Einstein 1915 Switzerland
 Helium J.N. Lockyer & J.C.P.Jannsen 1868 England & France
 Hydrogen Henry Cavendish 1766 England
 Law of electric conduction Georg Ohm 1827 Germany
 Law of electromagnetism Andre Ampere 1826 France
 Law of falling bodies Galileo 1590 !flay
 Laws of gravitation & motion Isaac Newton 1687 England
 Laws of planetary motion Johannes Kepler 1609-19 Germany
 Magnesium Sir Humphry Davy 1808 England
 Neptune (Planet) Johann Galle 1846 Germany
 Neutron James Chadwick 1932 England
 Nickel Axel Cronstedt 1751 Sweden
 Nitrogen Daniel Rutherford 1772 England
 Oxygen Joseph Priestly & C.W. Scheele 1772 England,Sweden
 Ozone Christian Schonbein 1839 Germany
 Pluto (Planet) Clyde Tpmbaugh 1930 U.S.A.
 Plutonium G.T. Seaborg 1940 U.S.A.
 Quantom Theory Max Planck 1900 Germany
 Radioactivity Antoine Bacquerel 1896 France
 Radium Pierre & Marie Curie 1898 France
 Silicon Jons Berzelius 1824 Sweden
 Special theory of relativity Albert Einstein 1905 Switzerland
 Sun as centre of solar system Copernicus 1543 Poland
 Uranium Martin Klaproth 1789 Germany
 Uranus (Planet) William Herschel 1781 England
 X - rays Wilhelm Roentgen 1895 Germany
 GEOGRAPHICAL EXPLORATIONS & DISCOVERIES:    
 Place Explorer/Discoverer Year Nationality
 America Christopher Columbus 1492 Italy
 Hawaii Is. (Sandwich Is.) Captain James Cook 1778 England
 Newfoundland John Cabot 1497 England
 New Zealand Abel Janszoon Tasman 1642 Holland
 North Pole Robert Peary 1909 U.S.A.
 Sea route to India (via Cape of Good Hope) Vasco da Gama 1498 Portugal
 South Pole R. Amundsen 1911 Norway

comments powered by Disqus