Home Culture: A Self-instructor and Aid to Social Hours at Home, Comprising New and Intellectual Entertainments in the Form of Test-exercises with Answers, in the Various Departments of Education ...Thomas Hunter E.B. Treat, 1884 - 672 من الصفحات |
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الصفحة 453
... Electric Light . Discovered by Sir H. Davy ; apparatus for regulat- ing , 1846. Electric Lamp , Jules Dubosc , 1855 . 49. Electrotyping . Spencer , 1837 , and Prof. Jacobi , Russ . , 1838. Im- proved by W. H. Mumler , an American ...
... Electric Light . Discovered by Sir H. Davy ; apparatus for regulat- ing , 1846. Electric Lamp , Jules Dubosc , 1855 . 49. Electrotyping . Spencer , 1837 , and Prof. Jacobi , Russ . , 1838. Im- proved by W. H. Mumler , an American ...
الصفحة 627
... electric current passing through a wire coiled round a bar of soft iron . 16. By covering wire with silk to insulate ... electricity will start through the wire in one direction as 627 ELECTRICITY .
... electric current passing through a wire coiled round a bar of soft iron . 16. By covering wire with silk to insulate ... electricity will start through the wire in one direction as 627 ELECTRICITY .
الصفحة 629
... electric lighting urges the cur- rents forward with electro - motive force varying from 50 to 2,000 volts . 30. The intense development of electricity condensed in the carbon by its great resistance to the electric current - the thin ...
... electric lighting urges the cur- rents forward with electro - motive force varying from 50 to 2,000 volts . 30. The intense development of electricity condensed in the carbon by its great resistance to the electric current - the thin ...
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