Atomic theory - Wikipedia, the free encyclopedia
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In chemistry and physics, atomic theory is a theory of the nature of matter, which states that matter is composed of discrete units called atoms, as opposed to the obsolete notion that matter could ...
en.wikipedia.org/wiki/Atomic_theory
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Modern atomic theory is generally said to begin with John Dalton, an English chemist and meteorologist who in 1808 published a book on the atmosphere and the behavior of gases that was entitled A New System of Chemical Philosophy.
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www.infoplease.com/ipa/A0905226.html
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Early Atomic Theory ... The atomic theory, which holds that matter is composed of tiny, indivisible particles in constant motion, was proposed in the 5th cent. B.C. by the Greek philosophers Leucippus and Democritus and was adopted by the Roman Lucretius.
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www.infoplease.com/ce6/sci/A0856763.html
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Early atomic theory stated that the characteristics of an object are determined by the shape of its atoms. So, for example, sweet things are made of smooth atoms, bitter things are made of sharp atoms.
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zebu.uoregon.edu/~js/ast123/lectures/lec04.html
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Democritus first suggested the existence of the atom but it took almost two millennia before the atom was placed on a solid foothold as a fundamental chemical object by John Dalton (1766-1844). Although two centuries old, Dalton's atomic theory remains valid in modern chemical thought.
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www.iun.edu/~cpanhd/C101webnotes/composition/dalton.htm...
www.iun.edu/~cpanhd/C101webnotes/composition/dalton.html
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In 1803, while attempting to explain his law of partial pressures, John started to formulate his most important contribution to science the atomic theory. He was studying nitrogen oxides for Dr. Priestley's test for percentage of nitrogen in the air.
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www.woodrow.org/teachers/ci/1992/Dalton.html
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There were several people involved in the Atomic Theory. This timeline is by no means complete, it only contains 41 of the scientists who worked on it. You will notice there is no 200-800 AD time period. This is because there are no scientists who contributed in that period of time.
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www.angelfire.com/games3/ubrk/801.html
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atomic theory n. The physical theory of the structure, properties, and behavior of the atom. ... In chemistry and physics, atomic theory is a theory of the nature of matter, which states that matter is composed of discrete units called atoms, as opposed to the obsolete notion that matter could be divided into any...
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www.answers.com/topic/atomic-theory
www.answers.com/topic/atomic-theory
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