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Proposed that everything in the world is made out of small particles called atoms
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Proposed the solid Sphere model
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Had a hypothesis of: Under the same conditions and under equal volumes of gases, the amount of particles will be the same.
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Created the periodic table
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Planck made the assumption that energy was made of individual units, or quanta. Which made the foundation for today's quantum theory.
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Proposed the Plum Pudding model, discovered the electron.
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Proposed the Photoelectric Effect which states that when light of a certain frequency shines on a metal, electrons are emitted.
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Developed Geiger Muller Tube, part of an instrument used to measure the amount of iodizing ion radiations
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Discovered the nucleus, proposed the nuclear model
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Proposed the planetary model in which an atom contained a very small charged nucleus orbited by electrons. Niels Bohr applied Max Planck’s quantum theory to the Rutherford model to come up with his famous Bohr model of the atom.
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Had a hypothesis of: If waves can behave like particles, particles can behave like waves.
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Schrodinger used equations to describe the chance of finding an electron in a certain position.This led to the creation of quantum mechanical model of the atom.
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Contributed to the Rutherford's atomic model while experimenting with alpha particles by finding hints to the existence of neutrons.
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Heisenberg's uncertanity principle: Its impossible to know both position and velocity of an electron at the same time.
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Discovered the Neutron
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http://www.abcte.org/files/previews/chemistry/s1_p6.html
bozemanscience.com
atomictimeline.net
nobeliefs.com
https://atomictimeline.net/
http://www.softschools.com/timelines/atomic_theory_timeline/95/
https://prezi.com/skin6wx2a7fm/atomic-theory-timeline/
https://www.preceden.com/timelines/36919-atomic-model-timeline
