Atomic Theory - Research Article from World of Physics

This encyclopedia article consists of approximately 14 pages of information about Atomic Theory.
This section contains 3,948 words
(approx. 14 pages at 300 words per page)
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Atomic theory is the description of atoms, the smallest units of elements. The scientific evidence for the existence of atoms and its even smaller constituents is so vast that most people now consider the existence of atoms to be a fact and not just a theory.

History

Beginning in about 600 B.C., many Greek philosophers struggled to understand the nature of matter. Some said everything was made of water, which comes in three forms (solid ice, liquid water, and gaseous steam). Others believed that matter was made entirely of fire in ever-changing forms. Still others believed that whatever comprised matter, it must be something that could not be destroyed but only recombined into new forms. If they could see small enough things, they would find that the same "building blocks" they started with were still there. One of these philosophers was named Democritus . He imagined starting...

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This section contains 3,948 words
(approx. 14 pages at 300 words per page)
Buy the Atomic Theory Encyclopedia Article
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Gale
Atomic Theory from Gale. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
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