hide Matching Documents

The documents where this entity occurs most often are shown below. Click on a document to open it.

Document Max. Freq Min. Freq
Harper's Encyclopedia of United States History (ed. Benson Lossing) 19 1 Browse Search
View all matching documents...

Your search returned 19 results in 4 document sections:

Harper's Encyclopedia of United States History (ed. Benson Lossing), Bell, Alexander Graham, 1847- (search)
Bell, Alexander Graham, 1847- Inventor; born in Edinburgh, Scotland, March 3, 1847; son of Alexander Melville; was educated in Edinburgh and London universities. In 1870 he went to Canada, and thence to Boston in 1872, and became Professor of Vocal Physiology in the Boston University. He invented the telephone, which was first exhibited at the Centenntial Exposition in 1876. He also invented the photophone.
Harper's Encyclopedia of United States History (ed. Benson Lossing), Electricity in the nineteenth century. (search)
ork. Some of these machines were very similar in construction to later forms which went into very extensive use. The large search-lights occasionally used in night illumination during the exhibitions were operated by the current from Wallace-Farmer machines. The Centennial Exhibition also marks the beginning—the very birth, it may be said—of an electric invention destined to become, before the close of the century, a most potent factor in human affairs. The speaking telephone of Alexander Graham Bell was there exhibited for the first time to the savants, among whom was the distinguished electrician and scientist Sir William Thomson. For the first time in the history of the world a structure of copper wire and iron spoke to a listening ear. The instruments were, moreover, the acme of simplicity. Within a year many a boy had constructed a pair of telephones at an expenditure for material of only a few pennies. The transmitter was only suited for use on short lines, and was soon
Harper's Encyclopedia of United States History (ed. Benson Lossing), Telephone, the (search)
onveyed sounds to a distance by distended wire......1667 Alexander Graham Bell begins his investigation of electrical transmission and reproduction of articulate speech......July, 1874 Bell constructs an electrical telephone, with a diaphragm of gold-beater's skin, which trans voice through a telegraphic circuit, etc......Feb. 14, 1876 Professor Bell publicly explains his method before the American Academy of Arts and Sciences of Boston......May 10, 1876 Bell's telephone exhibited at the Centennial Exhibition at Philadelphia, Pa.......June, 1876 Iron diaphragm first used by Bell......June 30, 1876 Edison's carbon, loud-speaking telephone invented......January, 1877 Professor BeProfessor Bell exhibits at the Essex Institute, Salem, Mass., his telephone, using a powerful horseshoe magnet, by which a short speech, shouted into a sienry W. Vaughan, State assayer, Providence, R. I.......June, 1877 Bell telephone patent expires......March 7, 1893 Statistics Miles o
Harper's Encyclopedia of United States History (ed. Benson Lossing), United States of America. (search)
an, Thomas F. Bayard; the House elects Henry B. Payne, Eppa Hunton, Josiah G. Abbot, James A. Garfield, George F. Hoar; the justices of the Supreme Court designated are Nathan Clifford, Samuel F. Miller, Stephen J. Field, and William Strong, and select Joseph R. Bradley as the fifth; in all eight Republicans, seven Democrats......Jan. 30, 1877 Three certificates from Florida referred to the electoral commission, and the vote awarded to the Republicans by 8 to 7......Feb. 9, 1877 Prof. A. Graham Bell exhibits his telephone at Salem, Mass......Feb. 12, 1877 Commission awards the electoral vote of Louisiana to the Republicans by vote 8 to 7......Feb. 16, 1877 Contested vote of Oregon counted for the Republicans by the commission, 8 to 7......Feb. 23, 1877 Political disabilities of J. E. Johnston, of Virginia, under the Fourteenth Amendment, removed by act of......Feb. 23, 1877 Senator Francis Kernan, of New York, substituted on electoral commission for Senator Thurman,