The Mechanics' Magazine, Museum, Register, Journal, and Gazette, Svazek 13M. Salmon, 1830 |
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Strana 337 - Fir'd at first sight with what the Muse imparts, In fearless youth we tempt the heights of arts, While from the bounded level of our mind Short views we take, nor see the lengths behind : But more...
Strana 252 - What is the side of a square whose area is equal to that of a circle 452 feet in diameter ? Ans. ^(452)
Strana 440 - We may suppose, that, at the commencement of the eruption, a deep mass of drift snow had been covered by volcanic sand showered down upon it before the descent of the lava. A dense stratum of this fine dust mixed with...
Strana 205 - Y' had best (quoth Ralpho), as the Ancients Say wisely, Have a care o' th' main chance, And Look before you ere you leap ; For As you sow, y' are like to reap : And were y...
Strana 160 - A sail was set on a car on our railroad yesterday afternoon, in the presence of a large concourse of spectators. Fifteen gentlemen got on board and flew off at the rate of twelve to fourteen miles an hour. Thirteen persons and three tons of iron were carried about ten miles an hour.
Strana 440 - ... flocks with water in the summer months, by simply strewing over the snow in the spring a layer of volcanic sand a few inches thick, which effectually prevents the sun from penetrating. When lava had once consolidated over a glacier at the height of ten thousand feet above the level of the sea, we may readily conceive that the ice would endure as long as the snows of Mont Blanc, unless melted by volcanic heat from below.
Strana 375 - The manner of securing all sorts of buildings from fire . Or, a treatise upon the construction of arches made with bricks and plaister, called...
Strana 399 - ... leather, which is firmly held down by the apparatus upon the mouth of the bottle ; the pressure upon the parts here increases with the pressure of the water within the bottle. Besides the pump, levers, and connecting pipe, there is also a manometer connected with the interior of the bottle to shew the pressure exerted. When a bottle is burst in this way by the hydraulic press, no violent dispersion of its parts takes place, unless indeed, in place of being filled with water, a portion of air...
Strana 425 - This girder is made by welding an arched bar of wrought iron to a longer straight bar, and then turning the ends of this latter either up or down, as may be most convenient for the particular use to which the girder is to be applied.