The Franklin Journal, and American Mechanics' Magazine1869 |
Contents
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Common terms and phrases
66 date acid amount anhydrite axis bands belt boiler bridge calculated carbon carbonic acid carnallite cent centre chloride chromosphere coal Coleman Sellers color combustion compression connected construction cord Cornish engine cubic curves cylinder diameter discharge distance effect equal experiments feet flame fly-wheel foot force Franklin Institute friction furnace give glass grooved Gutta Percha heat hydrogen indicator instrument iron length light load luminous LVII.-THIRD SERIES.-No machine magnesium manufacture material Mean daily measure ment metal miles minute motion moulinet nearly observed obtained oxide oxygen palladium passing photosphere plate pounds practical pressure produced proportion pulley pump pyrites quantity rails railway relative humidity resistance revolutions per minute salt screw shaft side solar span spectrum square inch steam engine steel strain surface temperature tion tube vapor velocity ventilation vibration vis viva weight wheel wire zircons
Popular passages
Page 260 - ... the magnet was then charged by connecting it with the electrical battery. The palladium was deflected slightly from the equatorial line by 10° only; the magnetism acting against the torsion of the silk suspending thread. The same palladium charged with 604-6 volumes of hydrogen was deflected by the electro-magnet through 48°, when it set itself at rest. The gas being afterwards extracted, and the palladium again placed equatorially between the poles, it was not deflected in the least perceptible...
Page 420 - QC A New, Revised, and considerably Enlarged Edition (the 6th), with very numerous Illustrations. 4s. 6d. cloth limp; 5s. 6d. cloth boards, gilt. 82. THE POWER OF WATER, as applied to drive Flour Mills, and to give motion to Turbines and other Hydrostatic Engines.
Page 271 - Looked at in this point of view, we cannot refuse to regard them as organisms of some peculiar and amazing kind ; and though it would be too daring to speak of such organization as partaking of the nature of life, yet we do know that vital action is competent to develop both heat, light, and electricity.
Page 254 - Hydrogenium 4'908 or 4-68 104-908 100 The expansion which the palladium undergoes appears enormous if viewed as a change of bulk in the metal only, due to any conceivable physical force, amounting as it does to sixteen times the dilatation of palladium when heated from 0° to 100° C. The density of the charged wire is reduced, by calculation, from 12'3 to 11'79. Again, as 100 is to 4'91, so the volume of the palladium, 0-1358 cubic centim., is to the volume of the hydrogenium, 0-006714 cubic centim.
Page 210 - Merrick, in the chair. The minutes of the last meeting were read and approved. The Actuary submitted the minutes of the Board of Managers, and reported...
Page 253 - ... kilogramme, a weight sufficient to straighten the wire without occasioning any undue strain. The wire was charged with hydrogen by making it the negative electrode of a small Bunsen's battery consisting of two cells, each of half a litre in capacity. The positive electrode was a thick platinum wire placed side by side with the palladium wire, and extending the whole length of the latter within a tall jar filled with dilute sulphuric acid. The palladium wire had, in consequence, hydrogen carried...
Page 260 - ... to be not sensibly magnetic by our test; but it always acquired a sensible magnetism when charged with hydrogen. It appears to follow that hydrogenium is magnetic, a property which is confined to metals and their compounds. This magnetism is not perceptible in hydrogen gas, which was placed both by Faraday and by .ME Becquerel at the bottom of the list of diamagnetic substances.
Page 253 - The palladium wire had, in consequence, hydrogen carried to its surface for a period of one and a half hour. A longer exposure was found not to add sensibly to the charge of hydrogen acquired by the wire. The wire was again measured and the increase in length noted. Finally, the wire being dried with a cloth, was divided at the marks, and the charged portion heated in a long narrow glass tube kept vacuous by a Sprengel aspirator. The whole occluded hydrogen was thus collected and measured ; its volume...
Page 262 - ... that the density of the latter is about 2, a little higher than magnesium, to which hydrogenium may be supposed to bear some analogy ; that hydrogenium has a certain amount of tenacity, and possesses the electrical conductivity of a metal ; and, finally, that hydrogenium takes its place among magnetic metals. The latter fact may have its bearing upon the appearance of hydrogenium in meteoric iron, in association with certain other magnetic elements.
Page 324 - Fig. 225, is 218 Ibs., or 109 Ibs. on each half of the driving cord ; and this is found to be about the best working strain for keeping the rope steady, and giving the required hold on the main driving pulley, and the horizontal pulleys of the crab. The limit of the weight G is that required to give steadiness to the transverse portion of the cord situated between the crab pulleys and the end of the traverser, which is unsupported for a length of about 30 feet when the crab is close to one end of...