The New Encyclopaedia Britannica
Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries - 934 pages
 Propaedia: outline of knowledge and guide to the Britannica.--- Micropaedia: ready reference and index.--- Macropaedia: knowledge in depth.
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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 ...
Spectral lines result when the atom goes over from one discrete excited state into
another. ... In order to understand the formation of aggregates of atoms—i.e.,
molecules and bulk matter—it is necessary to examine in somewhat greater
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