Natural Philosophy: With an Explanation of Scientific Terms, and an Index, 1권Baldwin and Cradock, 1829 |
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Acid angle of incidence apophyllite atmosphere axes axis axle beam blue body boiling Brewster caloric centre of gravity circumference colours column condensed convex convex lens crown glass crystals cylinder degree descend diameter diminished direction distance double refraction effect elastic equal equilibrium experiments feet flint glass fluid force friction glass greater green heat Hence increased index of refraction length lens lever liquid machine mechanical mercury metal motion move Nitric Acid parallel particles pass perpendicular phenomena pipe piston placed plane plate polarised light portion position pressure prism produced proportion pump quantity rays reflected reflexion resistance retina rope round screw side solid space spar specific gravity square inch steam substance Sulphate suppose surface system of rings temperature thermometer thickness tints tion Treatise tube valve vapour velocity vessel violet weight wheel yellow
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23 페이지 - SCIENTIFIC DIALOGUES ; intended for the Instruction and Entertainment of Young People ; in which the first principles of Natural and Experimental Philosophy are fully explained, by the Rev.
26 페이지 - This will cause the air at the equator to stand more than seven miles higher from the surface of the earth to the top of the atmosphere than at the north pole.
23 페이지 - ... feet in a minute. The efforts of men differ with the manner in which these efforts are employed. It has been shown by Mr. R. Buchanan, that the same...
40 페이지 - ... in their natural colours and proper actions, passing rapidly in succession along the surface of the sea during the whole of the short period of time while the above-mentioned causes remain.
26 페이지 - All these analogies are certainly favourable to the opinion of the vibratory nature of heat, which has been sufficiently sanctioned by the authority of the greatest philosophers of past times and of the most sober reasoners of the present.
23 페이지 - MATHEMATICS FOR PRACTICAL MEN: Being a Common-Place Book of Principles, Theorems, Rules, and Tables, in various departments of Pure and Mixed Mathematics, with their Applications ; especially to the pursuits of Surveyors, Architects, Mechanics, and Civil Engineers, with numerous Engravings.
51 페이지 - ... were about to rise in the east. This phenomenon is rarely seen in perfection, and has never been observed until within a few years. In order to explain it, let us suppose a line to join the eye of the observer and the sun. Let beams issue from the sun in all possible directions, and let us suppose that planes pass through these beams, and through the line joining the eye of the observer and the sun, which will be their common intersection, like the axis of an orange, or the axis of the earth,...
10 페이지 - But the water by moving acquires momentum and new force, and consequently is no longer equal to the column ov, to which the valve has been adjusted, but is superior to it, by which it is enabled to overpower the resistance of the weight t, and it carries the valve up with it, and closes the orifice r. This is no sooner done than the water is constrained to become stationary again, by which the momentum is lost, and the valve and weight once more become superior, and fall...
10 페이지 - ... fixed on to the spindle of the valve s, by means of which the valve is kept down and open ; any water, therefore, that is in the cistern o, will flow down the pipe qq, and escape at the orifice r, so long as the valve remains down, but the instant it is raised and shut, all motion of the water is suspended. Thus situated, the adjustment of the weight...
10 페이지 - Thus it appears, that it requires a force to lift the piston exactly equal to the weight of a column of water, whose base is equal to the...