THIS book is exactly what it professes to be—a practical book for practical men—and is vastly superior to “Electric Light,” by the same author. The detailed instructions given in the first 42 pages, ...

A dynamo is an electrical generator that produces direct current with the use of a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Electric light machine producing ...

IF any one event can be regarded as the birth of electrical engineering, it is surely the discovery by Faraday in 1821 of the principle of the electro-motor; that is, that a conductor carrying a ...