Elements of Natural Philosophy, Volume 1 |
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Page 1
... mass , chemical constitution , elasticity , tempe- rature , magnetism , electricity ; and that the preliminary consideration of such properties in the abstract is of very great use for Natural Philosophy . We devote to it , accordingly ...
... mass , chemical constitution , elasticity , tempe- rature , magnetism , electricity ; and that the preliminary consideration of such properties in the abstract is of very great use for Natural Philosophy . We devote to it , accordingly ...
Page 2
... masses . 7. When a point moves from one position to another it must evidently describe a continuous line , which may be curved or straight , or even made up of portions of curved and straight lines meeting each other at any angles . If ...
... masses . 7. When a point moves from one position to another it must evidently describe a continuous line , which may be curved or straight , or even made up of portions of curved and straight lines meeting each other at any angles . If ...
Page 43
... mass , or by a group of points whose positions with regard to each other are subject to known conditions . Any such definite alteration of form or dimensions is called a Strain . Thus a rod which becomes longer or shorter is strained ...
... mass , or by a group of points whose positions with regard to each other are subject to known conditions . Any such definite alteration of form or dimensions is called a Strain . Thus a rod which becomes longer or shorter is strained ...
Page 48
... mass merely turned round from its primitive position , as if it had been a rigid body . [ The following elementary geometrical in- vestigation , though not bringing out a thoroughly comprehensive view of the subject , affords a rigorous ...
... mass merely turned round from its primitive position , as if it had been a rigid body . [ The following elementary geometrical in- vestigation , though not bringing out a thoroughly comprehensive view of the subject , affords a rigorous ...
Page 52
... Mass of a body , is proportional , according to Newton , to the Volume and the Density conjointly . In reality , the definition gives us the meaning of density rather than of mass ; for it shows us that if twice the original quantity of ...
... Mass of a body , is proportional , according to Newton , to the Volume and the Density conjointly . In reality , the definition gives us the meaning of density rather than of mass ; for it shows us that if twice the original quantity of ...
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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.