Elements of Natural Philosophy, Volume 1 |
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Page 4
... theory , which are in general extremely simple ; although curious , and not always very easy , geometrical problems occur in connexion with it . We shall say nothing here about such cases as knots , knitting , weaving , etc. , as being ...
... theory , which are in general extremely simple ; although curious , and not always very easy , geometrical problems occur in connexion with it . We shall say nothing here about such cases as knots , knitting , weaving , etc. , as being ...
Page 19
... theories of sound , light , heat , etc. , that we make no apology for entering here into some little detail regarding it . 70. Def . When a point Q moves uniformly in a circle , the per- pendicular QP drawn from its position at any ...
... theories of sound , light , heat , etc. , that we make no apology for entering here into some little detail regarding it . 70. Def . When a point Q moves uniformly in a circle , the per- pendicular QP drawn from its position at any ...
Page 22
... theory is about 2.1 times that of the solar . Hence the spring tides of this theory are 3 · 1 , and the neap tides only 1.1 , each reckoned in terms of the solar tide ; and at spring and neap tides the hour of high water is that of the ...
... theory is about 2.1 times that of the solar . Hence the spring tides of this theory are 3 · 1 , and the neap tides only 1.1 , each reckoned in terms of the solar tide ; and at spring and neap tides the hour of high water is that of the ...
Page 56
... theory regarding the figure and density of the earth , may be employed to calculate the most probable value of the apparent force of gravity , being the resultant of true gravitation and centrifugal force , in any locality where no ...
... theory regarding the figure and density of the earth , may be employed to calculate the most probable value of the apparent force of gravity , being the resultant of true gravitation and centrifugal force , in any locality where no ...
Page 60
... theory of the resultant action of gravity , which will be given under Abstract Dynamics , shows that , except in a definite class of distributions of matter , there is no fixed point which can properly be called the Centre of Gravity of ...
... theory of the resultant action of gravity , which will be given under Abstract Dynamics , shows that , except in a definite class of distributions of matter , there is no fixed point which can properly be called the Centre of Gravity 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.