PDED

Public Domain Encyclopedia Database

Search across public-domain encyclopedia sources.

Sources
5 source families
27 records
17 imported
API search endpoint

11 results for "Electricity"

Results are grouped by encyclopedia. Imported records include OCR text, page ranges, and scan references.

Britannica 11th

Encyclopaedia Britannica · 11th edition

7

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
Read

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
Read

Electron

... N, the name suggested by Dr G. Johnstone Stoney in 1891 for the natural unit of electricity to which he had drawn attention in 1874, and subsequently applied to the ultraatomic particles carrying negative charges of electricity, of which Professor Sir J. J. Th ...

Vol. 9, pp. 237-237 · ocr-imported-page-aligned
Read

Energy

... energy, for it is capable of doing work in exploding; aLeyden jar charged with electricity possesses energy, for it is capable of doing work in being discharged. The motions of bodies, or of the ultimate parts of bodies, also involve energy, for stopping them ...

Vol. 9, pp. 398-405 · ocr-imported-page-aligned
Read

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
Read

Telephone

... of Edinburgh, then resident in Boston, Mass., U.S.A. Bell, like Reis, employed electricity for the reproduction of sounds; but he attacked the problem in a totally different manner. This will be better understood if we consider shortly on what the chief chara ...

Vol. 26, pp. 547-556 · ocr-imported-page-aligned
Read

Theatre

... spension of all scenery from above, the application of light in four colours by electricity, and the designing of all scenery to accord as much as possible with nature, the whole mounting being built up on the basis of a flat stage as distinct from the sloping ...

Vol. 26, pp. 729-738 · ocr-imported-page-aligned
Read