Elements of Natural Philosophy, Volume 1 |
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... given us much less trouble and anxiety , and would probably have ensured a better result , had we written the volume anew without keeping the larger book constantly before us . The sole justification of the course we have pur- sued is ...
... given us much less trouble and anxiety , and would probably have ensured a better result , had we written the volume anew without keeping the larger book constantly before us . The sole justification of the course we have pur- sued is ...
Page 6
... given time is greater or less : and it may be uniform , i.e. the same at every instant ; or it may be variable . Uniform velocity is measured by the space passed over in unit of time , and is , in general , expressed in feet or in ...
... given time is greater or less : and it may be uniform , i.e. the same at every instant ; or it may be variable . Uniform velocity is measured by the space passed over in unit of time , and is , in general , expressed in feet or in ...
Page 7
... given ; or we may express the same ideas thus the train is moving simultaneously northward , eastward , and upward - and the motion as to amount and direction will be completely known if we know separately the northward , east- ward ...
... given ; or we may express the same ideas thus the train is moving simultaneously northward , eastward , and upward - and the motion as to amount and direction will be completely known if we know separately the northward , east- ward ...
Page 8
... given velocities - and similarly OB for the second ; from A draw AC parallel and equal to OB . Join OC : then OC is the resultant velocity in magnitude B A and direction . OC is evidently the diagonal of the parallelogram two of whose ...
... given velocities - and similarly OB for the second ; from A draw AC parallel and equal to OB . Join OC : then OC is the resultant velocity in magnitude B A and direction . OC is evidently the diagonal of the parallelogram two of whose ...
Page 9
... given , thus : — -Acceleration is the rate of change of velocity whether that change take place in the direction of motion or not . 35. What is meant by change of velocity is evident from § 31 . For if a velocity ОA become OC , its ...
... given , thus : — -Acceleration is the rate of change of velocity whether that change take place in the direction of motion or not . 35. What is meant by change of velocity is evident from § 31 . For if a velocity ОA become OC , its ...
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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.