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Didn't believe in the “nothingness” of empty space. Eventually Democritus's ideas were rejected because of Aristotle. 340 B.C
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Matter is composed of empty of space though which atoms move. Atoms are solid, homogeneous, indestructible, and invisible. 400 B.C
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400 B.C
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equal volumes of all gases, at the same temperature and pressure, have the same number of molecules.
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It happened from 1775-1783 and involved the British and United States and the U.S won it.
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came up with the law of conservation.
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Created by Joseph and Jacques Montogolfier in 1783 and was used to carry humans through the air.
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Made the law of definite proportions
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It happened from 1812-1815 and was again between the British and U.S and nobody really won this war.
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Alexander Graham Bell invented the telephone in 1876 and it was the first machine that trasmittted sound by electricity.
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he studied the effects of sending an electric current through a gas in a sealed tube that had electodes at either end and a flow of electically charged particles.
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Thomas Edison invented the incandescent light bulb in 1879, which turned on a light that used electicity instead of lamps and candles.
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He discovered natural radioactivity
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Bayer firm created the first mass produced aspirin in 1897 which helped headaches.
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Willis Carrier invente dthe first air conditioner in 1902, that would air condition building and houses.
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The Wright brothers conducted the first successful flight in 1903 and also inventing the first successful airplane.
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His model used the first electron.
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first person to probe the existance of atoms with a microscope.
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he measured the charge on an electron with an oil-drop apparatus.
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the atom conatins in its nucleus a number of positive nuclear cahrges that is equal to its atomic number in the periodic table.
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founded the components of the atom
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discovered radioactive elements polonium and radium
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an atom is a small positively charged nucleus surrounded by orbiting electrons.
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he created the quantum theory.
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he combined the equations for the behavior of waves with the de Broglie equation to generate a mathematical model for the distribution of electrons in an atom.
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he worked on the wave nature of electrons.
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suggested in 1932 that any theory of the atom must be based on observable phenomenon, such as the spectral lines emitted by atoms.
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discovered the neutron
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Invented by John Hetrick in 1951 which was used in cars to stop protect your head in a car crash.
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James Faria and Robert Wright invented Astroturf in 1965. which was a synthetic turf.