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460 b.c., described the idea of atoms
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460 b.c., Aristotle rejected the idea of atoms
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Construction on the leaning tower of pisa began
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Hundred year war takes place in england
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Black Plague strikes Europe, kills millions
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Columbus discovers a new continent known as America
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First Europeans settle in America
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American citizens begin the battle for their independence from Europe
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Created the atomic theory about the nature of matter
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developed law of constant composition
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performed experiments with different chemicals that showed a possibility of atoms
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proposed his hypothesis stating that at equal volumes and temperature gases contain the same amount of molecules and or atoms
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Battle between northern and southern united states takes place
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discovered that cathode rays can travel in a straight line and impact a negative charge to things they strike
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discovered that some chemicals spontaneously decompose and give off penetrating rays
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discovered the electron and proposed a model for the structure of the atom
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discovered radioactivity in two elements during a spontaneous decay process
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showed that when you vibrate atoms enough until they glow and can only measure
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Published the famous equation e=mc^2
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discovered the mass and charge of an electron
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thought that electrons followed an atom like the planets orbit the sun
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figured that electrons can only follow the atom from a precise point
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Titanic is sunk in the Pacific Ocean by massive icebergs
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using x-ray tubes, discovered the charges of the nuclei of most atoms
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proposed that atom particles can act like waves
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described atoms by means of formula connected to the frequencies of spectral lines
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viewed electrons as continuous clouds and introduced wave mechanics
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Discovered the neutron
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Both World Trade Centers in New York City are bombed by terrorists
