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His theory states that atoms are all individually created and can’t be separated no matter what scientific procedures are applied.
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In 1808, he proposed that a chemical element consisted of tiny particles (atoms), all have the same chemical properties.
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Discovery of the electron and the beginning of his investigation into its charge and mass.
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Thomson created a model of the atom as a sphere of positive matter in which electrons are positioned by electrostatic forces.
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Thomson was awarded the Nobel Prize for Physics for his research into the electrical conductivity of gases.
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In 1911, he theorized about the atom having its positive charges in a very small nucleus.
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Bohr completed and published his theory of atomic structure. The theory was inspired by Rutherford's ideas of the atom and Planck's Quantum Theory. The theory became the basis for quantum theory.
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Schrodinger stated that rather than electrons being distributed within an electron configuration of shells and energy levels, they were arranged orbitals which were systematically distributed within Electron Clouds.
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Receives the Nobel Prize for physics
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Gell-Mann found that all of those particles, including the neutron and proton, are composed of fundamental building blocks that he named "quarks," which contained unusual properties.
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Studied "canal rays" and found they were associated with the proton H +. During his study Thomson also created a method of differentiating between various substances by their mass, which is known as mass spectroscopy.
