Mechanical Philosophy, Horology, and Astronomy: Being an Exposition of the Properties of Matter and of Their Mode of Action, the Construction of Instruments for the Measurement of Time, and a Description of the Heavenly Bodies |
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Page 1
... heat , as in the case of volcanoes and earthquakes , — -or from that of water , as when new islands are formed at the mouths of rivers by the sediment brought down in their streams , -or from the agency of living beings , as when ...
... heat , as in the case of volcanoes and earthquakes , — -or from that of water , as when new islands are formed at the mouths of rivers by the sediment brought down in their streams , -or from the agency of living beings , as when ...
Page 7
... 65th of its usual bulk ; and it must then have exercised 65 times its usual pressure , so that the vessel to hold air thus con- densed , must have been capable of resisting a force of ( 15 × 65 ) 8 CHANGES OF STATE BY HEAT AND COLD . 975.
... 65th of its usual bulk ; and it must then have exercised 65 times its usual pressure , so that the vessel to hold air thus con- densed , must have been capable of resisting a force of ( 15 × 65 ) 8 CHANGES OF STATE BY HEAT AND COLD . 975.
Page 8
... HEAT AND COLD . 975 lbs . on each square inch of its surface . All other gases can be compressed in the same proportion . The gas , for instance , which serves to light our streets and houses may be so compressed , that a quantity ...
... HEAT AND COLD . 975 lbs . on each square inch of its surface . All other gases can be compressed in the same proportion . The gas , for instance , which serves to light our streets and houses may be so compressed , that a quantity ...
Page 9
... heat . 11. There is not usually much change of bulk in the liquefac- tion of bodies ; nor in their freezing or congelation . Generally speaking , the bulk of a body in the liquid form is greater than that of the same weight in the solid ...
... heat . 11. There is not usually much change of bulk in the liquefac- tion of bodies ; nor in their freezing or congelation . Generally speaking , the bulk of a body in the liquid form is greater than that of the same weight in the solid ...
Page 10
... heat , yet the quantity of heat required to produce it is very different under different degrees of pressure . Thus , if we take water at the ordinary pressure as the standard , we should find that any addi- tional pressure ( such as ...
... heat , yet the quantity of heat required to produce it is very different under different degrees of pressure . Thus , if we take water at the ordinary pressure as the standard , we should find that any addi- tional pressure ( such as ...
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Common terms and phrases
acting action amount appear applied arch ascertained astronomers attraction axis axle balance ball beam binary stars body carbonic acid carried cause centre of gravity centrifugal force circle clock comet compressed consequently constructed continually curve degree descend diameter diminished direction distance earth eclipses elasticity equal equator exactly fall feet fixed friction fulcrum globe greater heat Hence inch inclined plane increase Jupiter latter length less lever liquid manner mass mechanical advantage Mercury miles minute mode moon motion move movement nearly observation orbit oscillation pallet particles pass pendulum perihelion perpendicular pinion planets poles portion position pressure principle produced proportion pulley regard resistance rest revolution revolve rotation round Saturn screw seen shown side Sliders solid space stars string substance suppose surface suspended teeth telescope tendency tion turned Uranus velocity vibrations voussoirs weight wheel whilst whole wire
Popular passages
Page 556 - Thou art, of what sort the eternal life of the saints was to be, which eye hath not seen, nor ear heard, nor hath it entered into the heart of man to conceive.
Page 112 - Every body must persevere in its state of rest, or of uniform motion in a straight line, unless it be compelled to change that state by forces impressed upon it.
Page 413 - ... of worlds That wait as satellites upon their power And flourish in their smile. Awake, my soul, And meditate the wonder. Countless suns Blaze round thee, leading forth their countless worlds ! Worlds, in whose bosoms living things rejoice, And drink the bliss of being from the fount Of all-pervading love. What mind can know, What tongue can utter, all their multitudes? Thus numberless in numberless abodes ! Known but to THEE, Blest Father! Thine they are, Thy children and thy care ; and none...
Page 499 - The rings of Saturn must present a magnificent spectacle from those regions of the planet which lie above their enlightened sides, as vast arches spanning the sky from horizon to horizon, and holding an invariable situation among the stars. On the other hand, in the region beneath the dark side, a solar eclipse of fifteen years...
Page 413 - That wait as satellites upon their power, And flourish in their smile. Awake, my soul, Aud meditate the wonder ! Countless suns Blaze round thee, leading forth their countless worlds! — Worlds in whose bosoms living things rejoice, And drink the bliss of being from the fount Of all-pervading Love.
Page 361 - Thus, the earth on which he stands, and which has served for ages as the unshaken foundation of the firmest structures, either of art or nature, is divested by the astronomer of its attribute of fixity, and conceived by him as turning swiftly on its centre, and at the same time moving onwards through space with great rapidity.
Page 487 - This may serve as a specimen of the dreams in which astronomers, like other speculators, occasionally and harmlessly indulge.
Page 503 - On it place a globe, two feet in diameter; this will represent the Sun; Mercury will be represented by a grain of mustard seed, on the circumference of a circle 164 feet in diameter for its orbit; Venus a pea, on a circle 284 feet in diameter; the Earth also a pea, on a circle of 430 feet; Mars a rather large pin's head, on a circle of 654 feet; Juno, Ceres, Vesta, and...
Page 471 - ... of the world. But the restoration is in the sequel as complete as the derangement ; and in the meantime the disturbance never attains a sufficient amount seriously to...
Page 499 - On the other hand, in the regions beneath the dark side, a solar eclipse of fifteen years in duration, under their shadow, must afford (to our ideas) an inhospitable asylum to animated beings, ill compensated by the faint light of the satellites. But we shall do wrong to judge of the fitness or unfitness of their condition from what we see around us, when, perhaps, the very combinations which convey to our minds only images of horror, may be in reality theatres of the most striking and glorious displays...