Elements of Natural Philosophy, Volume 1 |
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Page 53
... Weight . His experiments on pendulums , by which he establishes this most important remark , will be described later , in our chapter on Properties of Matter . As will be presently explained , the unit mass most convenient for British ...
... Weight . His experiments on pendulums , by which he establishes this most important remark , will be described later , in our chapter on Properties of Matter . As will be presently explained , the unit mass most convenient for British ...
Page 55
... weight is considered ; and the smallest particle of matter that has weight occupies some finite portion of space . Thus it is to be remarked , that there are two kinds of force , distinguishable by their place of application - force ...
... weight is considered ; and the smallest particle of matter that has weight occupies some finite portion of space . Thus it is to be remarked , that there are two kinds of force , distinguishable by their place of application - force ...
Page 56
... weight of unit mass . It must , of course , be specified in what latitude the observation is made . Thus , let W be the mass of a body in pounds ; g the velocity it would acquire in falling for a second under the influence of its weight ...
... weight of unit mass . It must , of course , be specified in what latitude the observation is made . Thus , let W be the mass of a body in pounds ; g the velocity it would acquire in falling for a second under the influence of its weight ...
Page 58
... weight of a pound in this latitude . Thus , speaking very roughly , the British absolute unit of force is equal to the weight of about half an ounce . 192. Forces ( since they involve only direction and magnitude ) may be represented ...
... weight of a pound in this latitude . Thus , speaking very roughly , the British absolute unit of force is equal to the weight of about half an ounce . 192. Forces ( since they involve only direction and magnitude ) may be represented ...
Page 63
... weight of the coals lifted ; that is , to the force overcome in raising them ; and also to the height through which they are raised . The unit for the measurement of work adopted in practice by British engineers , is that required to ...
... weight of the coals lifted ; that is , to the force overcome in raising them ; and also to the height through which they are raised . The unit for the measurement of work adopted in practice by British engineers , is that required to ...
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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 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 P₂ 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 theorem 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.