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He believed matter was made up if individual particles called atoms. He also believed atoms could not be created, destroyed, or further divided.
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Empedolces suggested that the world was made uo of four elements; earth, water, fire, and air.
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Sunglasses are invented in China.
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Sea battle of Zierikzee
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Battle of Tumu Fortress, Mongolians captures the Chinese emperor.
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Sets sail on his 1st voyage.
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England enforces Act of Supremacy
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Battle at London
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Dalton accurately determined the mass ratios of elements involved in the reactions. His atomic theory explains the conservation of mass in a chemical reation as being the result of seperation, combination, and rearrangement of atoms.
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J.J. Thomson determined the ration of the atoms charge to its mass. He also concluded that the mass of the charged particle was much less than that of a hydrogen atom. Another thin he identified was the first subatomic particle called the electron.
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He calculated that an atom consisted mostly of empty space through which electron move. He also concluded there was a tiny dense region called the nucleus.
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Bohr proposed the quantum model for the hydrogen atom. He also predicted the frequencies of lines in hydrogen's atomic emission spectrum.
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The first airline flight was from St. Petersburg Florida by Tony Jannus.
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!st legal baseball game on a Sunday.
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Jouis de Brogile saw only whole numbers of wavelenghts are allowed in a circular orbit of a fixed radius.
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James showed that the nucleus contained another subatomic particle called the neutron. The neutron has the same mass as a proton, but it carries no electric charge. Alsp electrons, protons, and neutrons account for all mass of the atom.
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Pope Formosa crowned king Arnulf of Karinthie/French emperor
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The vikings attacked Lindisfarne Island
