IMPORTANT DISCOVERIES

YEAR	DISCOVERY	PHYSICIST
1750	NATURE OF LIGHTNING	FRANKLIN
1798	CAVENDISH EXPERIMENT:MEASUREMENT OF G	CAVENDISH
1800	DALTON’S ATOMIC THEORY	DALTON
1820	FRAUNHOFER LINES	FRAUNHOFER
1831	ELECTRIC DYNAMO	FARADAY
1833	WHEATSTONE BRIDGE	WHEATSTONE
1834	ELECTRIC MOTOR	JACOBI
1841	POTENTIOMETER	POGGENDORF
1842	DOPPLER EFFECT	DOPPLER
1845	ELECTROMAGNETIC THEORY OF LIGHT	JAMES CLERK MAXWELL
1847	KIRCHOFF’S LAWS OF ELECTRICITY	KIRCHOFF
1857	KINETIC THEORY	CLAUSIUS
1861	ANDREW’S EXPERIMENT WITH CO2	ANDREWS
1865	ENTROPY	CLASSIUS
1872	VANDER WAAL’S EQUATION	VANDER WAAL
1879	DETERMINATION OF VELOCITY OF LIGHT	MICHELSON
1879	CATHODE RAY TUBE	CROOKES
1882	DIFFRACTION GRATTING	ROWLAND
1885	TRANSFORMER	STANLEY
1887	WIRELESS WAVES	HERTZ
1895	X – RAYS	ROENTGEN
1896	RADIOACTIVITY	BECQUEREL
1897	CATHODE RAY OSCILLOSCOPE	BROWN
1897	MEASUREMENT OF e/m FOR THE ELECTRON	THOMSON
1898	RADIUM DISCOVERED	CURIES
1900	QUANTUM THEORY	PLANCK
1901	BLACK BODY CURVE	PLANCK
1905	THEORY OF RELATIVITY	EINSTEIN
1911	SUPERCONDUCTIVITY	HEIKE KAMARLINGH ONNES
1912	CLOUD CHAMBER	WILSON
1912	X-RAY DIFFRACTION	LAUE
1913	X-RAY SPECTROMETER	BRAGG
1925	EXCLUSION PRINCIPLE	PAULI
1929	TELEVISION TUBE	ZWORYKIN
1929	ELECTROSTATIC ACCELERATOR	COCKCROFT & WALTON
1930	QUANTUM MECHANICS	DIRAC
1931	NEUTRINO	PAULI
1932	CYCLOTRON	LAWRENCE
1932	NEUTRON	CHADWICK
1938	SUPER FLUIDITY	KAPITZA
1938	NUCLEAR FISSION	HAHN & STRASSMAN
1948	TRANSISTOR	BARDEEN, BRATTAIN & SHOCKLEY
1952	BUBBLE CHAMBER	GLASER
1955	UNIFIED FIELD THEORY	EINSTEIN
1960	RUBY LASER	THEODORE MAIMAN
1985	1000 G eV ACCELERATOR	FERMILAB
1987	4.2 m TELESCOPE	WILLIAM HERSCHEL