Americana 1920
The Encyclopedia Americana · 1920 edition
Public Domain Encyclopedia Database
Results are grouped by encyclopedia. Imported records include OCR text, page ranges, and scan references.
The Encyclopedia Americana · 1920 edition
Encyclopaedia Britannica · 11th edition
TELEGRAPH (Gr. Tr/Xe, far, and ypafaiv, to write), the name given to an apparatus for the transmission of intelligence to a distance. Etymologically the word implies that the messages are written, but its earliest use was of appliances that depended on visual ...
Vol. 26, pp. 510-540 · ocr-imported-page-aligned... ; LIGHTING: Electric; ELECTROCHEMISTRY and ELECTROMETALLURGY. The principles of telegraphy (land, submarine and wireless) and of telephony are discussed in the articles TELEGRAPH and TELEPHONE, and various electrical instruments are treated in separate article ...
Vol. 9, pp. 179-192 · ocr-imported-page-aligned... 's introduction pht of the electric telephone as a competitor with the electric telegraph. Reis caused a membrane to open and close an electric 1 See his Scientific Papers, p. 47. 3 See Silliman's Jour., xxxii. 396, and xxxiii. 1 1 8. 4 Marrian, Phil. Mag., 3r ...
Vol. 26, pp. 547-556 · ocr-imported-page-aligned... nd copyists, packers and shippers, saleswomen (which is the largest class), and telegraph and telephone operators they have a large representation (13 to 34 %). A great variation exists in the proportion of the sexes employed in different manufacturing industr ...
Vol. 27, pp. 612-735 · ocr-imported-page-aligned... y West and the Daly Judge in the Park City district, and the Old Jordan and the Telegraph at Bingham, and there were fifteen other mines that produced between 1,000,000 and 3,000,000 ft of lead. Zinc has been produced in commercial quantities in Summit, Tooele ...
Vol. 27, pp. 813-818 · ocr-imported-page-alignedThe New International Encyclopaedia · First edition