The history of the atom

  • Period: 123 to

    the alchemists

    The alchemists were a general group that tried to ALWAYS make ordinary metals into gold. They discussed many things among themselves to figure it out. They also tried to take something ordinary stuff and change it into something special.There are still alchemists today
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    Democritus was one of two to come up with the “atomic” the; he expanded the system his teacher Leucippus made into a materialist account of the natural world. The atomists said that there are smallest indivisible bodies from which everything else is made, and that these move about in an unlimited space.
  • John Dalton

    John Dalton
    John Dalton had some meteorological studies but when he studied these studies, he also created a discovery in atomics. That when you heat up the particles, there kinetic energy is accelerated and if you cool the particles, the kinetic energy inside is decreasing, causing them to possibly freeze. He presented these discoveries and called them “Experimental Essays.”
  • Neils Bohr

    Neils Bohr
    Neils Bohr was one to create a most advanced model stating that the atom is a nucleus with several electrons rotating around it. He discovered alpha and beta rays, set the laws of radioactive falloff, and recognized alpha particles as helium nuclei.
  • J J Thompson

    J J Thompson
    J J Thompson discovered the electron and proton in a series of experiments designed to study the nature of electric discharge in a high-vacuum cathode-ray tube, an area being investigated by a plenty of scientists at the time. Thompson thought this as evidence of "bodies much smaller than atoms."
  • Ernest Rutherford

    Ernest Rutherford
    Ernest Rutherford was the one to discover the nucleus of the atom. He first found it out in one of his experiments, when he shot a ray through a gold tin piece and found out that the ray bounced off it.