• Electron was discovered by J. J. Thompson in the year 1897.
  • Proton was discovered by Rutherford in the year 1919.
  • Positron was discovered by Anderson in the year 1932.
  • Neutron was discovered by James Chadwick in the year 1932.
  • Atom was discovered by John Dalton in the year 1808.
  • Meson was discovered by H. Yukawa in the year 1949.
  • Atomic Number was discovered by Utahan in the year 1941.
  • Atomic Structure was discovered by Neil Bohr or Rutherford in the year 1913.
  • Theory of Relativity was discovered by Albert Einstein in the year 1905.
  • Photo-electric Effect was discovered by Albert Einstein in the year 1905.
  • Laws of Motion were discovered by Isaac Newton in the year 1687.
  • Laws of Electric Resistance were discovered by G. S. Ohm in the year 1827.
  • Raman Effect was discovered by C. V. Raman in the year 1928.
  • Law of Electrostatic Attraction was discovered by Coulomb in the year 1779.
  • Law of Flotation was discovered by Archimedes in the year 1827.
  • Law of Electrolytic Dissociation was discovered by Faraday.
  • Electromagnetic Induction was discovered by Michael Faraday in the year 1831.
  • Nuclear Reactor was discovered by Enrico Fermi in the year 1942.
  • X-rays was discovered by Roentgen in the year 1895.
  • Radioactivity was discovered by Henry Becquerel in the year 1896.
  • Radium was discovered by Madam Curie in the year 1898.
  • Dynamite was discovered by Alfred Nobel in the year 1867.
  • Diode Bulb was discovered by Sir J. S. Fleming in the year 1904.
  • Triode Bulb was discovered by Lee de Forest in the year 1906.

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