Rational Mechanics: Chapters in Modern Dynamics and EnergeticsE. & F.N. spon, 1928 - 214 síður |
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absolute abstract appear assumed assumption Bertrand Russell bodies moving calculation called change of momentum Clerk Maxwell coefficient Conservation of Momentum consider constant curve cylinder deduced defined definition dimensions direction displacement distance DuBuat Duchemin Energetics Energy transformed equal equations ether example experiments explain expression fact Grammar of Science Henri Poincaré impressed force Karl Pearson kinetic energy Law of Motion Least Action Least Resistance length Lord Rayleigh Mass Mathematical Matter and Motion Maupertuis mean measure Mechanics Newton Norman Campbell observed P. G. TAIT parabola Paradox passive accident phenomena Physical plate potential energy pressure Principia Principle of Least Principle of Relativity Pure Dynamics quantity referred relative motion Resistance of Air Resistance of bodies Rigidity scalar Science Second Law sense shape solid space speed straight line stress Tait text-books theory true uniform motion vector velocity vis viva viscosity W. W. ROUSE BALL whilst word Force
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Síða 82 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
Síða 169 - To this purpose the philosophers say that Nature does nothing in vain, and more is in vain when less will serve; for Nature is pleased with simplicity, and affects not the pomp of superfluous causes.
Síða 19 - All things are placed in time as to order of succession; and in space as to order of situation. It is from their essence or nature that they are places; and that the primary places of things should be movable is absurd.
Síða 79 - Whatever draws or presses another is as much drawn or pressed by that other. If you press a stone with your finger, the finger is also pressed by the stone. If a horse draws a stone tied to a rope, the horse (if I may so say) will be equally drawn back towards the stone...
Síða 124 - And may not its resistance be so small as to be inconsiderable ? For instance ; if this .(Ether (for so I will call it') should be supposed 700,000 times more...
Síða 69 - The change of motion is proportional to the motive force impressed ; and is made in the direction of the right line in which that force is impressed.
Síða 78 - 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.
Síða 72 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Síða 67 - DEFINITION IV An impressed force is an action exerted upon a body, in order to change its state, either of rest, or of uniform motion in a right line. This force consists in the action only, and remains no longer in the body when the action is over. For a body maintains every new state it acquires, by its inertia only.
Síða 22 - All those bodies are bodies of equal mass, which, mutually acting on each other, produce in each other equal and opposite accelerations. We have, in this, simply designated, or named, an actual relation of things. In the general case we proceed similarly. The bodies A and B receive respectively as the result of their mutual action (Fig.