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Discovered that matter is made of atoms, and that matter will always exist.
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Ancient Greeks thought that atoms were indivisible solid sphere like figures.
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Democritus proposed that matter was composed of tiny indivisible particles.
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Made the first version of the law of Conservation of Matter, named hydrogen and oxygen, made first periodic table, it had 33 elements.
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British teacher based his theory on others experimental data Billard Ball Model atom is a uniform, solid sphere.
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Michael Faraday contributed to the fields of electromagnetism and electrochemistry
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Henri Becquerel helped discover radioactivity with Marie Curie and Pierre Curie
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Lisa Meitner worked on radioactivity and nuclear physics
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Developed the wave mechanics theory, which greatly improved our knowledge of the physical nature on the atomic scale.
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Known for thier work in the study of radioactivity, thier work led to their discovery of the elements radium and polonium.
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Discovers that the atom was made of electrons scattered unevenly within an elastic sphere, surrounded by positive charge to balance.
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The plum pudding model was a model of the atom that incorporated the recently discovered electron.
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Albert Einstein had theories that led to new ways of looking at time, space, matter, energy, and gravity. His work led to important advances such as the control of atomic energy, space exploration, and applications of light.
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The electron-cloud effect is a phenomenon that occurs in particle accelerators and reduces the quality of the particle beam.
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A.K.A. The Ruthorford Model, is a model of the atom devised
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Gold Foil experiment discovered the nucleus density, positive charge in the center of the atom.
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Bright Line Spectrum tried to explain presence of specific colors in hydrogens spectrum enery levels. Electrons can only exist in specific energy states.
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He took the Bohr atom model one step further. he used mathematical equations to descrive the likelihood of finding an election in a certain position. (A.K.A.: The Quantum Mechanical Model of the Atom.
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Discovered the neutron in 1932. He led the British team in the Manhattan Project, which supported the USA's World War 2 effort to build the worlds first nuclear bomb.
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Otto Hahn was a German chemist and pioneer in the fields of radioactivity and radiochemistry, who was the first to recognise the uranium atom.
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Max Planck originated the quantum theory
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involvement in the synthesis, discovery and investigation of ten transuranium elements
