Created the hypothesis that everything is composed of atoms. These atoms are the smallest things there are and cannot be destroyed. Created the Origin of Atomic Theory (Atoma)
Founded Canal Rays that run along with neutrons and protons, when the rays are moving in opposite directions.
Created the Plum Pudding Model, which means that all electrons are embedded within protons. Also first to measure the charge to mass ratio of atoms using a Cathode Ray Tube.
Chadwick's greatest achievement was discovering neutrons. Also finding the Nuclear Model.
Founded the Photoelectric Effect which means light is able to behave like waves as well as particles,(Quantum Mechanical Model) He also came up with the Theory of Relativity which states that light travels at the same speed within a vacuum, therefore time dilates and distance contracts when objects are at the speed of light.
Founded that the masses and charges of electrons, when balancing the electric and gravitational force of an electron across charged plates.
Bohr creates a model of the atom. (Modern Model) Like the solar system, the positively charged nucleolus is surrounded by electrons that orbit in circular motions.
Proposed that protons and neutrons are located in the center of the atom.(Planetary Model)
Created the Quantum Wave Equation, whcih described the shape of quantum subshells in atoms.
Scientist that proposed the spin quantum number and also formulated Pauli Exclusion Principle. This principle states that no two electrons in one atom are able to have the same quantum states.
Creator of Quantum Mechanics. Also created the Uncertainty Principle which states that the simultaneous determination of two paired quantities, which means particles have a destined place they'll end up that is certain.
Founded the de Broglie Wavelength which stated that since light is able to behave like particles, then particles can have wavelength.
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