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sential features are these: (1) All matter is composed of ultimate, indivisible
entities, the atoms; and all changes in matter are merely changes in the
groupings of atoms. (2) There are many kinds of atoms, of different sizes and
shapes, and the ...
A great simplification was recognition that the sets of terms rather than the
spectral lines constitute the characteristic property of the atoms. The Bohr model
and the experiment of Franck and Hertz have shown that each of these terms ...
Thus Descartes could construct an atomic theory without atoms in the classical
sense. Although this theory as such has not been of great value for the scientific
atomic theory of modern times, its general tendency was not without importance.
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review