The Electrical Review

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IPC Electrical-Electronic Press, 1894 - Electric engineering
 

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Page 261 - ... use to which it may be applied, to any article enumerated in this title, as chargeable with duty, the same rate of duty which is levied and charged on the enumerated article which it most resembles in any of the particulars before mentioned ; " And if any non-enumerated article equally resembles two or more enumerated articles, on which different rates of duty are chargeable, there shall be levied, collected and paid on such nonenumerated article the same rate of duty as is chargeable on the...
Page 275 - As a unit of current, the international ampere, which is one-tenth of the unit of current of the CGS system of electro-magnetic units, and which is represented sufficiently well for practical use by the unvarying current, which, when passed through a solution of nitrate of silver in water in accordance with accompanying specifications,1 deposits silver at the rate of 0.001118 of a gramme per second.
Page 275 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 261 - Works of art, drawings, engravings, photographic pictures, and philosophical and scientific apparatus brought by professional artists, lecturers, or scientists arriving from abroad for use by them temporarily for exhibition and in illustration, promotion, and encouragement of art, science, or industry in the United States...
Page 261 - Treasury may prescribe; but bonds shall be given for the payment to the United States of such duties as may be imposed by law upon any and all such articles as shall not be exported within six months after such importation...
Page 274 - In the following specification, the term silver voltameter means the arrangement of apparatus by means of which an electric current is passed through a solution of nitrate of silver in water. The silver voltameter measures the total electrical quantity which has passed during the time of the experiment, and by noting this time, the time average of the current, or if the current has been kept constant, the current itself can be deduced. In employing the silver voltameter to measure currents of about...
Page 276 - ... 24 hours before sealing, which should be done as follows: — " Melt some marine glue until it is fluid enough to pour by its own weight, and pour it into the test tube above the cork, using sufficient to cover completely the zinc and soldering.
Page 274 - ... the electro-motive force that, steadily applied to a conductor whose resistance is one international ohm, will produce a current of one international ampere, and which is represented sufficiently well for practical use by...
Page 275 - The solution is now removed from the bowl and the deposit is washed with distilled water and left to soak for at least six hours.
Page 274 - The anode should be a plate of pure silver some 30 square centimetres in area and 2 or 3 millimetrea in thickness. This is supported horizontally in the liquid near the top of the solution by a platinum wire passed through holes in the plate at opposite comers. To prevent the disintegrated silver which is formed on the anode from falling on to...

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