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7 results for "electricity"

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Britannica 11th

Encyclopaedia Britannica · 11th edition

3

Electricity

ELECTRICITY. This article is devoted to a general sketch of the history of the development of electrical knowledge on both the theoretical and the practical sides. The two great branches of electrical theory which concern the phenomena of electricity at rest, ...

Vol. 9, pp. 179-192 · ocr-imported-page-aligned
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Astronomy

... meteorological, and spectroscopic departments were added to the establishment; electricity was employed, through the medium of the chronograph, for the registration of transits; and photography was resorted to for the daily automatic record of the sun's condi ...

Vol. 2, pp. 800-818 · ocr-imported-page-aligned
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Telegraph

... n used without qualification it usually denotes telegraphic apparatus worked by electricity, whether the signals that express the words of the message are visual, auditory or written. Land and Submarine Telegraphy will be considered in Part I., with a section ...

Vol. 26, pp. 510-540 · ocr-imported-page-aligned
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