Wells's Natural Philosophy: For the Use of Schools, Academies, and Private Students : Introducing the Latest Results of Scientific Discovery and Research; Arranged with Special Reference to the Practical Application of Physical Science to the Arts and the Experiences of Every-day Life : with Three Hundred and Seventy-five EngravingsIvison, Phinney & Company, 1869 - 452 sider |
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Wells's Natural Philosophy: For the Use of Schools, Academies, and Private ... David Ames Wells Uten tilgangsbegrensning - 1865 |
Wells's Natural Philosophy: For the Use of Schools, Academies, and Private ... David Ames Wells Uten tilgangsbegrensning - 1875 |
Wells's Natural Philosophy: For the Use of Schools, Academies, and Private ... David Ames Wells Uten tilgangsbegrensning - 1860 |
Vanlige uttrykk og setninger
action angle appear atmosphere attraction axle ball battery body boiling bulk called cause center of gravity Centrifugal Force clouds cold color column condensed conductor construction contained convex convex lens copper cubic cubic foot cylinder degree diminished direction distance earth effect elastic elec electric current electricity elevation equal fall feet fluid force friction galvanic glass greater heat hydrometer inch inclined plane increase iron length lens lever Leyden jar liquid machine magnetic matter mercury metal miles mirror moisture motion move needle object particles pass pendulum piston plate poles position pounds pressure principle produced pulley quantity radiation rays of light reflected refracted rendered represented in Fig retina rise screw side solid sound space specific gravity steam substance supposed surface temperature thermometer tion tricity tube vapor velocity vessel vibrations voltaic pile weight wheel wind wire zinc
Populære avsnitt
Side 123 - All the rivers run into the sea; yet the sea is not full; unto the place from whence the rivers come, thither they return again.
Side 72 - The disciples of Plato contributed not a little to the advancement of optics, by the important discovery they made, that light emits itself in straight lines, and that the angle of incidence is always equal to the angle of reflection. Plato terms colours " the effect of light transmitted from bodies, the small particles of which were adapted to the organ of sight.
Side 272 - ... said to amount to 3° or 4° only ; while upon land the difference often amounts to 9° or 10°. In temperate regions, and particularly in latitudes extending from 25° to...
Side 119 - Whatever rude structure the climate and materials of any country have obliged its early inhabitants to adopt for their temporary shelter, the same structure, with all its prominent features, has been afterwards kept up by their refined, and opulent posterity. Thus, the Egyptian style of building...
Side 114 - ... balance ? 5. Two persons carry a weight of 200 pounds suspended from a pole 10 feet long ; one of them being weak can carry only 75 pounds, leaving the rest of the load to be carried by the other : how far from the end of the pole must the weight be suspended ? 6.
Side 58 - ... always moves faster in proportion as its journey is longer, is, that in proportion as the arc described is more extended, the steeper are the declivities through which it falls, and the more its motion is accelerated.
Side 220 - Few of us at home can recognize the protecting value of this warm coverlet of snow. No eider-down in the cradle of an infant is tucked in more kindly than the sleeping-dress of winter about this feeble flower-life.
Side 45 - This result gives the weight of a bulk of water equal to that of the specimen, and by dividing the weight of the specimen in air by this number, the specific gravity is obtained.
Side 215 - Dogs and other animals when much heated, as they cannot throw off or diminish their natural covering, increase the evaporating surface by protruding a long, humid tongue. The power in animals of preserving their peculiar temperature has its limits. Intense cold coming suddenly upon a man who has not sufficient protection, first causes a sensation of pain, and then brings on an almost irresistible sleepiness, which if indulged in proves fatal.
Side 52 - When a man walks at a moderate rate, his centre of gravity comes alternately over the right and over the left foot. This is the reason why the body advances in a waving line, and why persons walking arm in arm shake each other, unless they make the movements of their feet to correspond, as soldiers do in marching.