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Dalton Atomic Theory
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Electrolytic decomposition by Michael Faraday
showed that if electricity is passed through a solution of an electrolyte, chemical reactions occurred at the electrodes in the liberation and deposition of matter at the electrodes. -
J. Plucker built one of the first cathode-ray tubes.
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Kirchhoff's Theorom
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Dmitri Mendeleev created the periodic table
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Period: to
Emission of Thermal waves by accelerating Charged Particles
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James Clerk Maxwell proposed the theory of electromagnetism and made the connection between light and electromagnetic waves.
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G.J. Stoney theorized that electricity was comprised of negative particles he called electrons.
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Sir William Crookes’ experiments with cathode-ray tubes led him to confirm the work of earlier scientists by definitively demonstrating that cathode-rays have a negative charge.
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E. Goldstein discovered canal rays, which have a positive charge equal to an electron.
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Hertz experiment of Photoelectric Effect
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Discovery of X-Rays
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JJ thomson measured the Charge to mass ration
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JJ Thomson atomic Model
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Rutherford discovered alpha, beta, and gamma rays in radiation
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Max Plank explanation of Black Body Radiation
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Einstein explained Photoelectric Effect
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Millikan Oil Drop expeiment
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Bohr's Model of Atom
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Discovery of Proton
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De Broglie's Hypothesis
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Presence of Electron spin quantum number was proposed
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Quantum Atomic Model
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Pauli's Exclusion Principle
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Heisenberg's Uncertainty Principle
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Discovery of neutron
