The History and Progress of the Electric Telegraph: With Descriptions of Some of the ApparatusD. Van Nostrand, 1869 - 280 páginas |
Dentro del libro
Resultados 6-9 de 9
Página 84
... copper and brass , having excellent pressure containing and anti - corrosion characteristics , were the materials of choice for brake tubing . But the mass production economics ... copper - nickel brake tubing The copper - 84 COPPER.
... copper and brass , having excellent pressure containing and anti - corrosion characteristics , were the materials of choice for brake tubing . But the mass production economics ... copper - nickel brake tubing The copper - 84 COPPER.
Página 119
... copper mattes. The advantages of flash smelting are well-known and the technology is well established. However, flash smelting also has disadvantages. The biggest is its use of fine, dry concentrate particles as feed. Fine particles ...
... copper mattes. The advantages of flash smelting are well-known and the technology is well established. However, flash smelting also has disadvantages. The biggest is its use of fine, dry concentrate particles as feed. Fine particles ...
Página 2
... Copper and Copper - Base Scrap Exports Rise in Third Quarter Duty Suspension on Unwrought Copper and Scrap Reinstated Copper Stockpile Disposal Approved ..... Export Restrictions on Copper Scrap and Alloy Ingot . Census Revises Scrap ...
... Copper and Copper - Base Scrap Exports Rise in Third Quarter Duty Suspension on Unwrought Copper and Scrap Reinstated Copper Stockpile Disposal Approved ..... Export Restrictions on Copper Scrap and Alloy Ingot . Census Revises Scrap ...
Página
... Copper Mining Company cast a wide shadow over Montana's press and politics . Copper Chorus : Mining , Politics , and the Montana Press , 1889-1959 is the first book to examine the extent , effectiveness , and consequences of one of the ...
... Copper Mining Company cast a wide shadow over Montana's press and politics . Copper Chorus : Mining , Politics , and the Montana Press , 1889-1959 is the first book to examine the extent , effectiveness , and consequences of one of the ...
Contenido
1 | |
2 | |
5 | |
6 | |
7 | |
8 | |
9 | |
10 | |
11 | |
12 | |
14 | |
15 | |
18 | |
19 | |
20 | |
23 | |
25 | |
31 | |
37 | |
43 | |
61 | |
91 | |
101 | |
106 | |
145 | |
147 | |
156 | |
162 | |
171 | |
172 | |
178 | |
202 | |
208 | |
222 | |
223 | |
231 | |
263 | |
273 | |
275 | |
278 | |
Otras ediciones - Ver todas
Términos y frases comunes
alphabet alternate currents armature arrangement atmospheric electricity attracted axis back contact beam bottom cable carried clockwork coils commutator connected consists construction contact-pins copper core corresponding current passes currents arriving cylinder deflected dial direction disc drum electricity electro-magnet employés galvanic galvanometer galvanoscope gutta percha hemp holes horizontal inductor inserted insulated intermediate station interrupted iron wires knot length letter lever Leyden jar lifted line battery line wire line-wire local battery means Messrs metal method mètre Morse apparatus motion needle negative current opposite paper strip permanent magnet plate pointer poles positive current posts pressed printing printing-press ratchet-wheel ratus receiving station relay resistance roller rotating round scape-wheel screw sending station shaft shown in Fig side Siemens signals soft-iron spiral spring style surface switch synchronism teeth terminal tion tongue tooth transmitting tube turning type-wheel underneath upper vertical vulcanite wheel whilst wire zinc
Pasajes populares
Página 5 - he felt himself struck in his arms, shoulders, and breast, so that he lost his breath, and was two days before he recovered from the effects of the blow and the terror.
Página 11 - ... and his wife, by remarking the corresponding motions of the ball, writes down the words they indicate: from which it appears he has formed an alphabet of motions. As the length of the wire makes no difference in the effect, a correspondence might be carried on at any distance...