This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 Excerpt: ... be achieved is to construct some kind of stranding by which all portions of the cable are equally accessible from the dielectric, so that the energy arriving from., he dielectric finds all parts of the mass of the cable, both surface and interior, equally accessible. In order to avoid external inductive disturbance, ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 Excerpt: ... be achieved is to construct some kind of stranding by which all portions of the cable are equally accessible from the dielectric, so that the energy arriving from., he dielectric finds all parts of the mass of the cable, both surface and interior, equally accessible. In order to avoid external inductive disturbance, the proper form to give to a cable intended to convey rapidly intermittent or alternate currents is a couple of rather thin concentric tubes of copper well insulated from each other, and both insulated from the earth, of which one forms the lead and the other the return. By this device the metal will be most economically employed. An equivalent device would be a central core of stranded copper cable covered with insulation, and then plaited over with a sheath of othe'r copper wires which form the return conductor. In a further experiment, Lord Rayleigh (loc. dt.) examined the resistance of an iron wire of hard Swedish iron 10'03 metres long and l-6 millimetre in diameter. In arbitrary units the resistance of the wire to steady currents was 10-4 units or '51 ohm, and to currents of 1,050 complete alternations per second its resistance was 12-1 units, or '595 ohm, which is an increase of about 20 per cent. In the case of a stouter wire, 18-34 metres long and 3-3 millimetres in diameter, the resistance to steady currents was 4'7 units, and the resistance to the interrupted currents of the above-mentioned frequency was 8-9 units, or nearly double. This illustrates the fact that for a given frequency of alternation the ratio in which the resistance is increased is greater the greater the diameter of the conductor, assuming it to be a round solid rod. Lord Rayleigh found it more convenient in many researches to slightly alter the arrangement of the in..
Read Less
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
Fine. Sewn binding. Cloth over boards. 636 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
New. Sewn binding. Cloth over boards. 636 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
