| United States. Congress. House - United States - 1858 - 830 pages
...and that a magnet surrounded by many turns of one long wire must be used to receive this current. 3 I was the first actually to magnetize a piece of iron at a distance, and to call attention to the fact of the applicability of my experiments to the telegraph. 4. I was the first... | |
| George Ripley, Charles Anderson Dana - Encyclopedias and dictionaries - 1860 - 808 pages
...magnet surrounded by many turns of one long wire must be used to receive this current. He was also the first actually to magnetize a piece of iron at a distance, and invented the first machine moved by the agency of electromagnetism. (See ELECTKO-MAGNETISM.) In March,... | |
| James Curtis Booth, Campbell Morfit - Chemistry, Technical - 1862 - 740 pages
...that a magnet surrounded by many turns of one long wire must be used to receive this current. 3. I was the first actually to magnetize a piece of iron at a distance, and to call attention to the fact of the applicability of my experiments to the telegraph. 4. I was the first... | |
| Smithsonian Institution - Science - 1862 - 738 pages
...that a magnet surrounded by many turns of one long wire must be used to receive this current. 3. I was the first actually to magnetize a piece of iron at a distance, and to call attention to the fact of the applicability of my experiments to the telegraph. 4. I was the first... | |
| Smithsonian Institution. Board of Regents - Discoveries in science - 1879 - 590 pages
...strata of insulated wire over each other, thus producing a compound helix formed of a long wire of mauy coils. At the same time he developed the relation...the electro-magnet. 1833. Weber discovered that the conducting-wires of an electric telegraph could be left without insulation except at the points of... | |
| Smithsonian Institution - 1880 - 548 pages
...the wire Instead of the rod or bar, and covering the whole surface of the iron with a series of colls in close contact. He extended the principle to the...electro-magnet to telegraphy at a distance. Using the terminal shortrclrcuit magnet of quantity, and the armature as the signaling device, he was the first to make... | |
| Smithsonian Institution - Electromagnetism - 1880 - 560 pages
...perfected the magnet applicable to the purpose, was the first actually to magnetize a piece of iron at n distance, and to demonstrate and declare the applicability...quantity, and the armature as the signaling device, ho was the first to make by it acoustic signals, sounding a bell at a distance by means of the electro-magnet.... | |
| United States. Congress - Electromagnetism - 1880 - 554 pages
...that a magnet surrounded by many turns of one long wire may be used to receive this current. " 3. I was the first actually to magnetize a piece of iron at a distance. and to call attention to the fact of the applicability of my experiments to the telegraph. "4. I was the first... | |
| 1880 - 552 pages
...distance. HENRY first rendered it applicable to the transmission of mechanical power to a distance; was the first actually to magnetize a piece of iron at a distance, and by it to deliver telegraphic signals. He also showed what kind of battery must be employed to project... | |
| Smithsonian Institution - Chemistry - 1881 - 850 pages
...insulated wire over each other, thus producing a compound helix formed of a long wire of many colls. At the same time he developed the relation of the...electro-magnet to telegraphy at a distance. Using the terminal shortclrcult magnet of quantity, and the armature as the signaling device, he was the first to make... | |
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