Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould and Lincoln., 1851 |
Altres edicions - Mostra-ho tot
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art Visualització completa - 1850 |
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art Visualització completa - 1850 |
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art Visualització completa - 1869 |
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Passatges populars
Pàgina 345 - It is true that the serpent has no limbs, yet it can outclimb the monkey, outswim the fish, outleap the jerboa, and, suddenly loosing the close coils of its crouching spiral, it can spring into the air and seize the bird upon the wing: all these creatures have been observed to fall its prey.
Pàgina 19 - ... the magnitude of the blow in each set of experiments being made greater, or smaller, as occasion required. The general result obtained was, that when the blow was powerful enough to bend the bars through one-half of their ultimate deflection...
Pàgina 19 - The results of these experiments were, that when the depression was equal to one third of the ultimate deflection, the bars were not weakened. This was ascertained by breaking them in the usual manner with stationary loads in the centre. When, however, the depressions produced by the machine were made equal to one half of the ultimate deflection, the bars were actually broken by less than 900 depressions.
Pàgina 390 - Chemistry, Meteorology, and the Function of Digestion, considered with reference to Natural Theology.
Pàgina 20 - In wrought- iron bars no very perceptible effect was produced by 10,000 successive deflections by means of a revolving cam, each deflection being due to half the weight which, when applied statically, produced a large permanent flexure.
Pàgina 307 - ... without any tabular surface. A good general idea may be formed of its shape and size by conceiving it as the pointed half of a small hen's egg, though it is said not to have risen more than half an inch from the gold setting in which it was worn by Runjeet. Its value is scarcely computable, though two millions sterling has been mentioned as a justifiable price, if calculated by the scale employed in the trade. The Pitt diamond, brought over from Madras by the grandfather of Lord Chatham, and...
Pàgina 428 - Providence, will draw courage from it, and hope yet more earnestly for the redemption of the most degraded portions of mankind. Faith, science, learning, poetry, taste, in a word, genius, have liberally contributed to the production of the work under review. Sometimes we feel as...
Pàgina 221 - This is quite analogous to what happens when mixed gases are diffused into air. An important consequence is, that in liquid diffusion we have a new method of separation or analysis for many soluble bodies, quite analogous in principle to the separation of unequally volatile substances in the process of distillation. Thus, it was shown that...
Pàgina 265 - Gulf stream was uphill, the top preserved the water-level, or nearly so. The currents which run from the Atlantic into the Mediterranean, and from the Indian ocean into the Red sea, were the reverse of this.
Pàgina 19 - A heavy ball was suspended by a wire eighteen feet long from the roof, so as to touch the centre of the side of the bar. By drawing this ball out of the vertical position at right angles to the length of the bar, in the manner of a pendulum, to any required distance, and suddenly releasing it, it could be made to strike a horizontal blow upon the bar; the magnitude of which could be regulated at pleasure, either by varying the size of the ball or the distance from which it was released.