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At around 460 BC, up in Greece, Democritus declared that all matter, was made form atoms. He also said that atoms are eternal and that they are so small that they can no longer be divided up, but still take up the space that they are in completley.
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Around 1777 AD, Lavoisier , a French man, found the formula for the conservation of matter in chemical reactions
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1803 AD-- Now over to England, A man named John Dalton formed the atomic theory, stating that all matter is composed of tiny indestructable particles called atoms.
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1895 AD, W.K. Roentgen of Germany used cadothe rays, adn unexpectedly discovered xrays
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J.J Thomson was in England when he discovered the electron, adn created the first plum-pudding model of the atom.
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1900 AD, Max Planck originated the quantum theory
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Albert Einstein was in Germany when he found out that light was made up of different particles that, in addition to wavelike behavior, demonstrate certain properties unique to particles. He also found out the theory of relativity.
