A Course of Mathematics: For the Use of Academies as Well as Private Tuition, Volume 2Campbell, 1812 |
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Page 74
... elevation ACA ' , BCB ' . Then from z the zenith of the observer , or of the angle c , draw the arcs za , zb , of vertical circles , measuring the zenith distances d , d ' , and draw the arc ab of another great circle to measure the ...
... elevation ACA ' , BCB ' . Then from z the zenith of the observer , or of the angle c , draw the arcs za , zb , of vertical circles , measuring the zenith distances d , d ' , and draw the arc ab of another great circle to measure the ...
Page 75
... elevation or a depression . Scholium . By means of this problem , if the altitude of a hill be found barometrically , according to the method des- cribed in the 1st volume , or geometrically according to some of those described in ...
... elevation or a depression . Scholium . By means of this problem , if the altitude of a hill be found barometrically , according to the method des- cribed in the 1st volume , or geometrically according to some of those described in ...
Page 76
... elevation at A , B , and c and we have to determine the point E , so that those lines may have that ratio . To effect this geometrically use the following E G MA B NC D Construction . Take вм , on AC produced , equal to BC , BN equal to ...
... elevation at A , B , and c and we have to determine the point E , so that those lines may have that ratio . To effect this geometrically use the following E G MA B NC D Construction . Take вм , on AC produced , equal to BC , BN equal to ...
Page 77
... elevation of the extreme stations , find the natural numbers answering thereto , and take half their sum ; from which subtract the natural number answer- ing to twice the log . cotangent of the middle angle of eleva tion then half the ...
... elevation of the extreme stations , find the natural numbers answering thereto , and take half their sum ; from which subtract the natural number answer- ing to twice the log . cotangent of the middle angle of eleva tion then half the ...
Page 84
... elevation h , and 6 that of the base referred to the level of the sea . Then because the measured base is all along reduced to the horizontal plane , the two , B and 6 , will be concentric and similar arcs , to the respective radii r + ...
... elevation h , and 6 that of the base referred to the level of the sea . Then because the measured base is all along reduced to the horizontal plane , the two , B and 6 , will be concentric and similar arcs , to the respective radii r + ...
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Common terms and phrases
absciss altitude axis ball base beam becomes body centre of gravity circle column consequently Corol correct fluent cosine cubic curve cycloid cylinder denote density descending determine diameter direction distance earth elevation equa equal equation equilibrio EXAM expression feet find the fluent fluid force gives greatest Hence horizontal hyperbola inches inclined plane length lever logarithm measured motion moving nearly oblique ordinate parabola parallel pendulum perp perpendicular pressure prob PROBLEM projectile prop proportional PROPOSITION quantity radius ratio rectangle resistance right angles right line roots Scholium sides sin² sine solid angle space specific gravity spherical excess spherical triangle square supposed surface tangent theorem theref tion trapezium variable velocity vertical vibrations weight whole
Popular passages
Page 437 - Or, by art. 3 14 of the same, the pressure is equal to the weight of a column of the fluid...
Page 13 - In any plane triangle, the sum of any two sides is to their difference, as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Page 155 - MECHANICAL POWERS are certain simple instruments employed in raising greater weights, or overcoming greater resistance than could be effected by the direct application of natural strength. They are usually accounted six in number; viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 241 - Weigh the denser body, and the compound mass separately, both in water, and out of it ; then find how much each loses in water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then...
Page 240 - As the weight lost in water is to the whole, or absolute weight ; so is the specific gravity of water ' " to "the specific gravity 'of the body . 2.
Page 155 - LBVER is any inflexible rod, bar, or beam, which serves to raise weights, while it is supported at a point by a fulcrum or prop, which is the centre of motion. The lever is supposed to be void of gravity or weight, to render the demonstrations easier and simpler.
Page 451 - It has been found, by these experiments, that no difference is caused in the velocity, or range, by varying the weight of the gun, nor by the use of wads, nor by different degrees of ramming, nor by firing the charge of powder in different parts of it.
Page 82 - The surface of a spherical triangle is measured by the excess of the sum of its three angles above two right angles, multiplied by the tri-rectangular triangle.
Page 304 - ... small parts, but as generated by continued motion, by means of which they increase or decrease ; as a line by the motion of a point ; a surface by the motion of a line ; and a solid by the motion of a surface.
Page 128 - Forces, are true in the Motions of Bodies freely descending by their own Gravity; namely, that the velocities are as the Times, and the Spaces as the Squares of the Times, or as the Squares of the Velocities. FOR, since the force of gravity is uniform, and constantly the same, at all places near the earth's surface, or at nearly the same...