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Democritus discovered that everything in the universe was made of atoms, which are indestructible.
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He built it on a small island on the main opening of the Nile River.
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John Dalton introduced the atomic theory into chemistry. He stated that atoms are indivisible and indestructible, all atoms in any element are identical, and that atoms have different weights and chemical properties.
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Faraday discovers electromagnetic induction and begins to describe it.
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Eugen Goldstein discovers the presence of protons in atoms and that they each carry a charge.
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JJ Thomson discovered the electron. He made a model now called the "plum pudding" model which shows the structure of an atom with both negatively and positively charged pieces. There are also negatively charged electrons that were small compared to the whole atom.
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It travels over 2000 miles across the Atlantic from England to Canada.
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Millikan proved the existence of the charge within an electron, and was able to determine the approximate sizes of electrons.
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He discovered that atoms have a small charged nucleus which is surrounded by largely empty space, and that the nucleus is circled by tiny electrons. The electrons orbit in set paths which is shown in his now called "Jimmy neutron" model.
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He proposed a theory for hydrogen atom that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in set orbits. When they jump to and from other orbits with lower energy, a light quantum can be created. This becomes known as the "solar system" model.
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Heisenberg discovered that the position of a particle and the momentum of said particle cannot both be known exactly.
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Schroedinger discovered a model of a dense nucleus surrounded by a cloud of electrons at different levels during their orbits. This became known as the "electron cloud" model.
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Chadwick discovered the neutron inside of atoms. They don't have a charge to the neutron, but do add to the atomic weight similarly to how protons do.
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