Abstract
THIS book is designed primarily for the use of students in engineering schools. An elementary knowledge of physics and mathematics is all that is demanded of the reader, and yet a good introduction is given to practical engineering calculations and methods. The authors begin by a brief description of the electron theory, as many of the phenomena described follow readily when this theory is adopted. Some of the sentences, however, may well puzzle the beginner. “This shortage of electrons at the end of the rod constitutes the positive charge at this end.” The positive charge, therefore, seems to have no real existence. Similarly we are told that a negative charge can exist in a perfect vacuum. It, also, can have little real existence. This is better, however, than talking about positive and negative fluids.
Continuous Current Circuits and Machinery.
By Prof. J. H. Morecroft Prof. F. W. Hehre. Vol. 1. Pp. viii + 467. (New York: J. Wiley and Sons, Inc.; London: Chapman and Hall, Ltd., 1923.) 20s. net.
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Continuous Current Circuits and Machinery. Nature 114, 678 (1924). https://doi.org/10.1038/114678a0
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DOI: https://doi.org/10.1038/114678a0