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Isaac Newton proposed the idea that the world is composed of small solid masses in motion.
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Lavoisier was a French Chemist who proved the conservation of matter.
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Formed Coulomb's Law: the force one timy charged object
exerts on a second one is proportional to the amount of
charge on one times the amount of charge on the others
and inversely proportional to the square of the distance
between them. -
John Dalton proposed his theory of the atomic structure through his Solid Sphere Model.
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They both isolated two other radioactive elements, radium and polonium.
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Discovered X-Rays.
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A French physicist who found that rays coming from a
uranium ore affected a photographic plate like X-rays did.
The rays were not from an external source and were more
powerful than those from a sample of pure uranium. His
experiment led to the discovery of natural radioactivity. -
JJ Thompson introduced his thoery of the atomic structure through his Plum Pudding model.
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Proposed the quantum of light in which he states that light
behaves like a particle but also has a wave nature, giving it
a dual nature. Stated the equivalence of energy and mass
through the theory of special relativity. -
Discovered the charge of an electron with his oil drop
experiment. This experement took 9 years to fully come to a conclusion. -
In 1909, Rutherford conducted the famous Gold Foil experement and came up with his own nuclear model. In 1911, he disproved JJ Thompson's plum pudding model theory.
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Rutherford's gold foil experement proved JJ Thompson's atomic structure theory wrong.
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In 1915, Neils Bohr proposed his famous Planetery Solar Model of the atomic structure.
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Erwin Schrodinger proposed his Electron Cloud Model of the atomic structure.
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Demonstrated that energy and mass are conserved in
atomic processes. -
Discovered the neutron.
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Found that when Uranium is bombarded by neutrons it
produces smaller nuclei roughly half the size of the original
Uranium nucleus. -
Realized that Hahn was splitting the Uranium nucleus,
something never done before. -
These two suggested the movement of these atoms and whats inside of them.
