A School Compendium of Natural and Experimental Philosophy: Embracing the Elementary Principles of Mechanics, Hydrostatics, Hydraulics, Pneumatics, Acoustics, Pyronomics, Optics, Electricity, Galvanism, Magnetism, Electro-magnetism, Magneto-electricity, and Astronomy : Containing Also a Description of the Steam and Locomotive Engines and of the Electro-magnetic TelegraphA.S. Barnes & Company, 1855 - 470 pages |
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acid action air-pump angle atmosphere attraction axis axle ball barometer battery body called causes centre of gravity chemical colours communicated concave mirror condensed connected constructed convex convex lens copper cork crystalline lens cylinder degree direction distance earth effect elastic electric fluid equal experiment Explain Fig fall feet focus force friction fulcrum galvanic glass heat hydrometer hydrostatic inches inclined plane instrument iron length lens lenses lever Leyden jar liquid machine magnet magnetic magazine mechanical mercury metallic motion movable move needle object particles pass pendulum perpendicular piece piston placed plate pole portion pounds pressure prime conductor principle produced properties pulley pump quantity rays of light reflected Reflecting Telescope refracted represents retina revolve rise screw side specific gravity steam substances surface Telescope tion tricity tube valve vapour velocity vessel vibrations Vitreous Humour voltaic voltaic pile weather weight wheel wire zinc
Popular passages
Page 48 - These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 17 - Jupiter a moderate-sized orange, in a circle nearly half a mile across; Saturn a small orange, on a circle of four-fifths of a mile...
Page 56 - High-gleaming from afar. Prime cheerer Light ! Of all material beings first, and best ! Efflux divine! Nature's resplendent robe! Without whose vesting beauty all were wrapt In unessential gloom; and thou, O Sun!
Page 44 - Whatever change of weather suddenly follows a change in the barometer may be expected to last but a short time. Thus, if fair weather follow immediately the rise of the mercury, there will be very little of it ; and in the same way, if foul weather follow the fall of mercury it will last but a short time.
Page 64 - ... covered with cotton threads, each thirty-one feet long; about eighteen inches of the ends are left projecting, so that only twenty-eight feet of each actually surround the iron. The aggregate length of the coils is therefore 728 feet. 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.
Page 55 - ... 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...
Page 44 - The pecuh'arity 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. Ancient...
Page 15 - ... the angle of reflection is always equal to the angle of incidence, the image from any point can be seen only in the reflected ray prolonged.
Page 14 - If a ray of light fall perpendicularly on an opaque body, it is reflected back in the same line, towards the point whence it proceeded. If it fall obliquely...
Page 67 - Roads which are not level may be regarded as inclined planes, and loads drawn upon them in carriages, considered in reference to the powers which impel them, are subject to all the conditions which have been established for inclined planes. The inclination of the road is estimated by the height corresponding to some proposed length. Thus...