English Mechanic and World of Science: With which are Incorporated "the Mechanic", "Scientific Opinion," and the "British and Foreign Mechanic.", Band 26E. J. Kibblewhite, 1878 |
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achromatic acid ammonia angle angular aperture aniline answer aperture appears battery BEACON LOUGH bogie boiler carbon cause centre centre punch coal colour copper correspondent cylinder diameter diatoms diatonic scale distance edge effect electric engine ENGLISH MECHANIC eocene equal experience eyepiece fact furnace give glass Gramme machine heat hole inch instrument iron Jupiter kindly lamp length lens lenses letter light machine magnet means ment metal method microscope miles moon motion object observed obtained ordinary paper patent phosphorus piece pipe planet plate present pressure produced quantity query question readers reply result ring rotifer Saturn screw seen shaft side Siemens solution specific gravity square star steam steel sulphuric acid surface telescope temperature thickness tion tube weight wheel wire wireworms wood zinc
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Seite 289 - blowpost ' letter appears to cost yl. in Berlin, or about one-fourth of the cost of a telegram, and the average time of delivery in any quarter of the city is stated to be one hour. Admitting our own Metropolitan telegraphic system to be perfect as far as it goes, it is perfectly clear, from the report of the Select Committee already referred to, that a cheaper rate than is.
Seite 82 - stupendous whole ' shift and change, augment and diminish, appear and disappear, while the total of which they are the parts remains quantitatively immutable. Immutable, because when change occurs it is always polar — plus accompanies minus, gain accompanies loss, no item varying in the slightest degree without an absolutely equal change of some other item in the opposite direction.
Seite 110 - ... hams has increased more than fortyfold, beef, cattle, and sheep, have in the same time increased fourfold ; butter and cheese sixfold. Nearly one-half of this increase has taken place since 1870. The proportions in which we are supplied at present are with meat three-fourths from home, and one-fourth from abroad; and with dairy produce two-thirds from home (inclusive of milk), and one-third from abroad. Ten years ago the flocks and herds of this country were as numerous as at present. Their increase...
Seite 83 - All this points to the conclusion that the force we employ in muscular exertion is the force of burning fuel and not of creative will. In the light of these facts the body is seen to be as incapable of generating energy without expenditure as the solids and liquids of the voltaic battery. The body, in other words, falls into the category of machines.
Seite 243 - Stephenson, the great eniineer, told Lichfield that he had travelled on the Manchester and Liverpool railroad for many miles at the rate of a mile a minute — that his doubt was not how fast his engines could be made to go, but at what pace it would be proper to stop ; that he could make them travel with greater speed than any bird can cleave the air ; and that he had ascertained that 400 miles an hour was the extreme velocity which the human frame could endure — at which it could move and exist.
Seite 83 - Polir regions, and there restored to its pristine form. The matter of the human body is the same as that of the world around us, and* here we find the forces of the human body identical with those of inorganic nature.
Seite 110 - These figures show two very important results for the consideration of those who are concerned with the provision of the country. First, that the individual consumption of bread has increased ; and, second, that we at present depend wholly on foreign countries for that increase, and for all further addition required by the annual increase of the population. For that addition alone, an annual increase of wheat equal to all the wheat at present grown in Scotland would barely suffice.
Seite 80 - ... 189. THE RUDIMENTS OF PRACTICAL BRICKLAYING. In Six Sections : General Principles ; Arch Drawing, Cutting, and Setting ; Pointing; Paving, Tiling, Materials; Slating and Plastering; Practical Geometry, Mensuration, &c. By ADAM HAMMOND. Illustrated. is. 6d.
Seite 62 - ... or appears like the white of eggs. Apply it warm. Buff the grain off the leather where it is to be cemented, rub the joint surfaces solidly together, let it dry...
Seite 83 - The matter of the human body is the same as that of the world around us, and* here we find the forces of the human body identical with those of inorganic nature. Just as little as the voltaic battery is the animal body a creator of force. It is an apparatus exquisite and ofToctnal beyond all others in transforming and distributing the energy with which it is supplied, but it possesses no creative power.