Elements of Natural Philosophy, Volume 1 |
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Page 54
... it . Force may be of divers kind , as pressure , or gravity , or friction , or any of the attractive or repulsive actions of electricity , magnetism , etc. 184. The three elements specifying a force , or the 54 PRELIMINARY .
... it . Force may be of divers kind , as pressure , or gravity , or friction , or any of the attractive or repulsive actions of electricity , magnetism , etc. 184. The three elements specifying a force , or the 54 PRELIMINARY .
Page 63
... pressure between a fixed and moving body , the tension of the cord to which a pendulum bob is attached , or the attraction of the sun on a planet if the planet describe a circle with the sun in the centre , are all instances in which no ...
... pressure between a fixed and moving body , the tension of the cord to which a pendulum bob is attached , or the attraction of the sun on a planet if the planet describe a circle with the sun in the centre , are all instances in which no ...
Page 68
... pressures , or transferrence of energy in any form . This is perfectly supplied by 227. LEX III . Actioni contrariam semper et aequalem esse reactionem : sive corporum duorum actiones in se mutuņ semper esse aequales et in partes ...
... pressures , or transferrence of energy in any form . This is perfectly supplied by 227. LEX III . Actioni contrariam semper et aequalem esse reactionem : sive corporum duorum actiones in se mutuņ semper esse aequales et in partes ...
Page 80
... pressure begins to act between them to prevent any parts of them from jointly occupying the same space . This force commences from nothing at the first point of collision , and gradually increases per unit of area on a gradually ...
... pressure begins to act between them to prevent any parts of them from jointly occupying the same space . This force commences from nothing at the first point of collision , and gradually increases per unit of area on a gradually ...
Page 114
... pressure upon the time of day ; and so on . Such curves may be accurately drawn by photographic processes on a sheet of sensitive paper placed behind the mercurial column , and made to move past it with a uniform horizontal velocity by ...
... pressure upon the time of day ; and so on . Such curves may be accurately drawn by photographic processes on a sheet of sensitive paper placed behind the mercurial column , and made to move past it with a uniform horizontal velocity by ...
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Common terms and phrases
acceleration action amount angular velocity anticlastic attraction axis called centimetre centre of gravity centre of inertia circle circular cloth co-ordinates component configuration consider constant cosine couple curvature curve cylinder denote density described diagram displacement distance elements ellipse ellipsoid elongation equal equations equilibrium external point Extra fcap finite flexure fluid forces acting friction geometrical given force Hence hodograph horizontal infinitely small instant inversely kinetic energy length magnitude mass matter measured moment of inertia momentum moving Natural Philosophy normal section Oxford P₁ parallel particle path pendulum perpendicular portion position potential pressure principal axes principle produce projection proportional quantity radius radius of gyration reckoned rectangular resultant right angles rigid body rotation round shear shell sides simple harmonic motion solid angle space spherical surface spiral square straight line strain stress suppose tangent theory tion torsion uniform unit vertical whole wire
Popular passages
Page 161 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Page 65 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it is compelled by force to change that state.
Page 28 - Fourier's theorem is not only one of the most beautiful results of modern analysis, but may be said to furnish an indispensable instrument in the treatment of nearly every recondite question in modern physics.
Page 161 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.
Page 66 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Page 68 - To every action there is always an equal and contrary reaction; or, the mutual actions of any two bodies are always equal and oppositely directed in the same straight line.
Page 130 - UNTIL we know thoroughly the nature of matter and the forces which produce its motions, it will be utterly impossible to submit to mathematical reasoning the exact conditions of any physical question.