The Annual of Scientific Discovery, Or, Year-book of Facts in Science and ArtGould, Kendall, and Lincoln, 1851 - Industrial arts |
Other editions - View all
Common terms and phrases
acid action ammonia angles animal apparatus appears applied atmosphere battery bodies boiler Boston carbonic carbonic acid cause cent centimetres centre Chem chloride chloroform coal color communication condenser contains copper crystals cylinder deposits depth diameter discovery distance earth effect electricity engine exhibited experiments fact feet fibrine fossil Franklin Institute French Academy glass Gulf Stream heat hour hydrogen inches invention iodine iridium iron Jour Journal July Lake Lake Superior length less light lime liquid London machine magnetic manufacture matter means metal meteoric miles millimetres motion nitric acid nitrogen observations obtained oxide oxygen ozone paper passing pipe placed plants plate portion potash pounds present produced Prof quantity rocks rollers salt side Silurian silver solution species specific gravity specimens steam substance sulphate sulphur sulphuret sulphuric acid surface temperature tion tube vapor vegetable velocity vessel weight wire zinc
Popular passages
Page 343 - 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.
Page 17 - ... 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...
Page 17 - 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.
Page 305 - 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 sold to the Regent...
Page 16 - Brunei, however, thinks the various appearances of the fracture depend much upon the mode in which the iron is broken. The same piece of iron may be made to exhibit a fibrous fracture when broken by a slow heavy blow, and a crystalline fracture when broken by a sharp short blow.
Page 126 - The effect of the increased thickness is obviously to improve the insulation of the carpet. The carpet must be quite dry, and also the floor of the room, so that the fluid may not be conveyed away as soon as it is excited. This will not generally be the case except in winter, and in rooms which are habitually kept quite warm. The most remarkable cases which I have heard of in New York have been of close, well-built houses, kept very warm by furnaces ; and the electricity was most abundant in very...
Page 425 - TOUCHING THE STRUCTURE, DEVELOPMENT, DISTRIBUTION, AND NATURAL ARRANGEMENT OF THE RACES OF ANIMALS, LIVING AND EXTINCT ; WITH NUMEROUS ILLUSTRATIONS.
Page 18 - 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.
Page 22 - That as it has appeared that the effect of velocity communicated to a load is to increase the deflection that it would produce if set at rest upon the bridge; also that the dynamical increase in bridges of less than 40 feet in length is of sufficient importance to demand attention, and may even for lengths of 20 feet become more than one-half of the statical deflection at high velocities, but can be diminished by increasing the stiffness of the bridge...
Page 101 - Yard, was an upright engine of two feet stroke; and in order to have facilities for comparative trials and experiments, it was necessary that a double engine should be made, the two parts exactly corresponding. Two bars of soft iron, six inches diameter and three feet in length, were the prime movers, and these were balanced by means of connecting rods and cranks upon a fly-wheel shaft. The balance wheel and shaft together weighed six hundred pounds.