Elements of Natural Philosophy, Volume 1 |
From inside the book
Results 1-5 of 79
Page 1
... produce or to change motion . Dynamics , therefore , is divided into two parts , which are conveniently called ... producing or in changing motion . 4. In Kinetics it is not mere motion which is investigated , but the relation of forces ...
... produce or to change motion . Dynamics , therefore , is divided into two parts , which are conveniently called ... producing or in changing motion . 4. In Kinetics it is not mere motion which is investigated , but the relation of forces ...
Page 3
... be extended to a plane polygon , and the integral change of direction , or the angle between the first and last sides , is then the sum of its exterior angles , L · all the sides being produced each in the direction in B 2 KINEMATICS . 3.
... be extended to a plane polygon , and the integral change of direction , or the angle between the first and last sides , is then the sum of its exterior angles , L · all the sides being produced each in the direction in B 2 KINEMATICS . 3.
Page 4
William Thomson Baron Kelvin, Peter Guthrie Tait. all the sides being produced each in the direction in which the moving point describes it while passing round the figure . This is true whether the polygon be closed or not . If closed ...
William Thomson Baron Kelvin, Peter Guthrie Tait. all the sides being produced each in the direction in which the moving point describes it while passing round the figure . This is true whether the polygon be closed or not . If closed ...
Page 14
... Produce YS to cut the circle again in Z. Then YS SZ is constant , and therefore SZ is inversely as SF , that is , SZ is proportional to the velocity at P. Also 1 Proc . R. S. 1865 . A S P U -B SZ is perpendicular to the direction of ...
... Produce YS to cut the circle again in Z. Then YS SZ is constant , and therefore SZ is inversely as SF , that is , SZ is proportional to the velocity at P. Also 1 Proc . R. S. 1865 . A S P U -B SZ is perpendicular to the direction of ...
Page 15
... produced , so that YS SU is constant , the locus of U is easily seen to be a circle . Hence the proposition is generally true for all conic sections . The hodograph surrounds its origin if the orbit be an ellipse , passes through it ...
... produced , so that YS SU is constant , the locus of U is easily seen to be a circle . Hence the proposition is generally true for all conic sections . The hodograph surrounds its origin if the orbit be an ellipse , passes through it ...
Other editions - View all
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.