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He lived from 384 BC until 322 BC. He took up from Plato, with some different elements that had been changed. He assumed that any object had four attributes: matter, form, moving cause, and final cause. He was the one who found that heavy things fall faster than lighter things.
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He lived from 460 Bc until 370 BC. He believed that everything was the result of natural laws.
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Lived from 1760 until 1844. He pictured atoms as tiny, indestructible particles, with no internal structure. He made wooden spheres with different masses to prove his theory.
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He lived from 1856-1940. He pictured electrons embedded in a sphere of positive electric charge. To prove this, he plugged a wire into a source of electirc currents and both ends (+,-) of a sealed tube filled with gas at low pressure.
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He lived from 1865 until 1950. He believed and atom has a central nucleus, and that electrons move in orbits like the rings around Saturn. He made two predictions, then continued to create the Saturnian model.
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He lived from 1889 until 1970. He ALSO conducted the gold foil expirement which is alos known as the Geiger-Marsden expirement.
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He lived from 1871 until 1937. He said and atom has a dense, positively charged nucleus and that electrons move randomly in the space around the nucleus. He did the gold foil expirement, which showed the deflected and undeflected particles.
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He lived from 1885 until 1962.He said that the electrons move in spherical orbits at fixed distances from the nucleus. His expirement was the subshell model.
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He lived from 1858 until 1947. He used the idea of quanta (discrete units of energy) to explain hot glowing matter.
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He lived from 1892 until 1987.He proposed that moving particles like electrons have some properties of waves. There was even evidence of this!
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He lived from 1887 until 1961. He used many mathematical equations.
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He lived from 1901 until 1954. He conducted the first controlled chain reaction releasing energy from the atoms nucleus.
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He lived from 1891 until 1974. He found the neutron which has a lack of electrical charge. Unlike positively charged alpha particles, the neutrons dont need to overcome any Coulomb barrier, making it able to split the nuclei of even the heaviest elements.
