The Boston School Compendium of Natural and Experimental Philosophy: Embracing the Elementary Principles of Mechanics, Pneumatics, Hydraulics -- with a Description of the Steam and Locomotive Engines

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T.H. Webb & Company, 1842 - 237 sivua
 

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Sivu 160 - Mars a rather large pin's head, on a circle of 654 feet; Juno, Ceres, Vesta, and Pallas, grains of sand, in orbits of from...
Sivu 93 - ... the angle of reflection is always equal to the angle of incidence, the image for any point can be seen only in the reflected ray prolonged.
Sivu 83 - The trunk of an elephant, that can pick up a pin, or rend an oak, is as nothing to it. It can engrave a seal, and crush masses of obdurate metal...
Sivu 83 - It can engrave a seal, and crush masses of obdurate metal before it ; draw out, without breaking, a thread as fine as gossamer, and lift a ship of war like a bauble in the air. It can embroider muslin and forge anchors, cut steel into ribbons, and impel loaded vessels against the fury of the winds and waves.
Sivu 155 - Each strand is wound on a little less than an inch : in the middle of the horse-shoe it forms three thicknesses of wire ; and on the ends, or near the poles, it is wound so as to form six thicknesses.
Sivu 40 - ... forced into the spout. where, meeting with the particle 3, it presses it upwards, and this pressure will be continued from 3 to 4, from 4 to 5, and so on, till the water in the spout has risen to a level with that in the body of the vessel.
Sivu 143 - Porter, ale, or strong beer, is said to have a is'"" peculiar taste when drunk from a pewter vessel. The peculiarity of taste is caused by the galvanic circle formed by the pewter, the beer, &c., and the moisture of the under lip. Works of metals the parts of which are soldered together soon tarnish in the places where the metals are joined.
Sivu 27 - ... time that the axle describes a small one, therefore the power is increased in the same proportion as the circumference of the wheel is greater than that of the axle. If the velocity of the wheel is...
Sivu 160 - Venus a pea, on a circle of 284 feet in diameter ; the Earth also a pea, on a circle of 430 feet ; Mars a rather large pin's head, on a circle of...
Sivu 8 - RT is a tangent. 10. A square is a figure having four equal sides, and four equal angles. These will always be right angles. (See Fig.

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