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 ...
The Bohr model and the experiment of Franck and Hertz have shown that each of
these terms-represents a sharply defined excited state, or energy level, of the
atom. Spectral lines result when the atom goes over from one discrete excited ...
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