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Democritus was the first to have the idea of the atom and named it "Atomus". It all began with the belief that elements could be divided into little structures.
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This model was made after Democritus and is said to be uncuttable. That is why it is a solid round cirle.
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He was a famous philosopher. He disagreed with Democritus and his theories. Although it led to more and more discoveries and theories.
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He reopened the idea of the Atom and founded the John Dalton Atomic theory.
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He said that atoms can be added with "fixed proportions" and is the founder of the word "molecules".
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He studied "electrolysis" as the splitting of molecules with electricity.
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He built one of the first cathode ray tubes.
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He discovered that cathode rays can ttravel in straight lines.
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He discovered radioactivity from leaving uranium on a plate in a drawer and discovering that it had seeped through the plate.
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He discovered the electron and is the mind under the Thomson Model .
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Marie and Pierre both were studying radioactivity and discovered polonium and radium. In the end, they both died from radiation.
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This model was based on J.J. Thomson's atomic theory. It contained small negatively charged particles.
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He was the creator of the famous equation E=MC2.
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He was the first to discover the breakable atom. He did so by doing an experiment with gold foil.
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He is the mind under the Bohr model where electrons travel in fixed orbits.
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He was the one to dicover isotopes through a mass spectograph.
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They built a lithium accelerator that produced alpha particles.
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He was the one to dicover the neutron through alpha particles.
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He was the first to do a controlled chain reaction experiment that released energy from the nucleus.
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Electron particles don't really follow fixed orbits, but can go to any part of the nucleus at some particular time.
