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Atomic Timeline

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Alicia Johnson

on 4 September 2015

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Transcript of Atomic Timeline

Ernest Rutherford (1911)
discovered the concept of a nucleus in an atom
bombardment of positive alpha particles on thin foil of gold
observed the deflection of the bombarded alpha particles on the photographic film
Erwin Schrodinger (1926)
published a paper on wave mechanics now known as the Schrodinger equation
published a series of other papers
J.J. Thomson (1897)
Experimented on cathode rays
The rays were particles with negative electric charge
all atoms contained them
later named them electrons
Atomic Timeline:
Alicia Johnson

Niels Bohr (1913)
proposed that energy levels of electrons are discrete and revolve in stable orbits around atomic nucleus
created Bohr's model
Louis de Broglie (1923)
proposed that his relationship would determine the wavelength of any matter
showed that wave particle duality was not merely a behavior of light
John Dalton (1803)
Created a theory of the absorption of gases by water in 8 sections
Hantaro Nagaoka (1904)
developed the early atom model
based on the analogy of the explanation of the stability of Saturn's rings
James Chadwick (1923)
postulated that there were neutral, massive particles in the nucleus
discovered neutrons
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