Elements of Natural Philosophy, Volume 1 |
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Page 1
... action of Force is called , by the most logical writers , DYNAMICS . It is commonly , but erroneously , called ... action of force in maintaining rest , or preventing change of motion , the balancing of forces , ' or Equilibrium , is ...
... action of Force is called , by the most logical writers , DYNAMICS . It is commonly , but erroneously , called ... action of force in maintaining rest , or preventing change of motion , the balancing of forces , ' or Equilibrium , is ...
Page 2
... action of an infinite force . It is useful to con- sider at the outset various theorems connected with the geometrical notion of the path described by a moving point ; and these we shall now take up , deferring the consideration of ...
... action of an infinite force . It is useful to con- sider at the outset various theorems connected with the geometrical notion of the path described by a moving point ; and these we shall now take up , deferring the consideration of ...
Page 11
... action of gravity . In this case the space described in any interval is that which would be described in the same time by a point moving uniformly with a velocity equal to that at the middle of the interval . In other words , the ...
... action of gravity . In this case the space described in any interval is that which would be described in the same time by a point moving uniformly with a velocity equal to that at the middle of the interval . In other words , the ...
Page 35
... change in the direction of motion , but does not influence the velocity ; so , if a body be rotating about an axis , and be subjected to an action tending to produce rotation about a perpendicular axis , the D 2 KINEMATICS . 35.
... change in the direction of motion , but does not influence the velocity ; so , if a body be rotating about an axis , and be subjected to an action tending to produce rotation about a perpendicular axis , the D 2 KINEMATICS . 35.
Page 49
... action , the whole quantity of a fluid within any space at any time must be equal to the quantity originally in that space , increased by the whole quantity that has entered it , and diminished by the whole quantity that has left it ...
... action , the whole quantity of a fluid within any space at any time must be equal to the quantity originally in that space , increased by the whole quantity that has entered it , and diminished by the whole quantity that has left it ...
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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.