Elements of Physics: Or Natural Philosophy, General and Medical, Volume 1 |
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action aeriform animal arteries atmospheric pressure atoms attraction axle ball barometer becomes bladder blood blow body bottom called capillaries carbonic acid cause centre of gravity centrifugal force chest column common compressed condensed contrivance cork degree descending dilatation direction distance earth effect elastic equal explained fall feet floating fluid force forceps glass glottis heart heat hence human inch inclined plane inertia instance instrument laws less lever lift liquid mass mechanical philosophy mercury miles motion mouth moving muscles Natural Philosophy nature nearly particles pass pendulum perfect persons phenomena piston pound weight pounds pressed produced Prop proportion pulley pulse pump quantity repulsion resistance rest rise rope round sails ship side solid sound specific gravity spring steam steam-engine stone strong substance supposed surface tion truth tube turning valve veins velocity vessel vibrations waves weight wheel whole wind
Popular passages
Page ii - In conformity to the act of the Congress of the United States, entitled, " An Act for the Encouragement of Learning, by securing the copies of Maps, Chart*. and Books, to the authors and proprietors of such copies, during the times therein mentioned." And also to the act, entitled, " An Act supplementary to an Act, entitled " An Act for the Encouragement of Learning, by securing the copies of Maps, Charts, and Books, to the authors and proprietors of such copies during the time* therein mentioned,"...
Page ii - Wilkins, of the said district, have deposited in this office the title of a book- the right whereof they claim as proprietors in the words following, to wi — pMvras A-óyet* fapttafiiottt lJtiXOÏf LböAEy^hV^j, ХЯ? ' In conformity to the act of the Congress of the United States...
Page 338 - ... originally well made, and only refuses to work when worn out with age ; it is equally active in all climates, and will do work of any kind ; — it is a water-pumper, a miner, a sailor, a cotton-spinner, a weaver, a blacksmith, a miller, &c.
Page 338 - Other combustibles ; it consumes none while idle ; it never tires, and wants no sleep ; it is not subject to malady when originally well made, and only refuses to work when worn out with age ; it is equally active in all climates, and will do work of any kind...
Page 109 - ... the other side, and the spring has to begin its work again. The balance-wheel at each vibration allows one tooth of the adjoining wheel to pass, as the pendulum does in a clock ; and the record of the beats is preserved by the wheel which follows.
Page 165 - ... of an inch. The claw-hammer also proves, that it is of no consequence whether the lever be straight or crooked, provided it produces the required difference of velocity between power and resistance. The part of the hammer resting on the plank is the fulcrum.
Page xxxvii - In China men are gathering the tea-leaf for me — in America they are planting cotton for me — in the West India Islands they are preparing my sugar and my coffee — in Italy they are feeding...
Page 338 - In the present perfect state of the engine, it appears a thing almost endowed with intelligence. It regulates with perfect accuracy and uniformity the number of its strokes in a given time, counting or recording them moreover, to tell how much work it has done, as a clock records the beats of its pendulum ; it regulates the quantity of steam admitted to work ; the briskness of the fire ; the supply of water to the boiler ; the supply of coals to the fire...
Page 378 - A wave of water, in this respect, is exactly imitated by the wave running along a stretched rope when one end is shaken ; or by the mimic waves of our theatres, which are generally the undulations of long pieces of carpet, moved by attendants.
Page 109 - ... acquired during its fall from one side carries it up to an equal height on the other ; so, in a watch a spring, generally spiral, surrounding the axis of the balance-wheel, is always pulling this towards a middle position of rest, but does not fix it there, because the momentum acquired during its approach to the middle...