Scientific Dialogues, Том 2M. Carey, 1815 - 260 страница |
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Страница 20
... pound of wool into a thread 168 thousands yards long . And Mr. Boyle mentions that two grains and a half of silk was spun into a thread 300 yards in length . If a pound of silver , which , you know , con- tains 5760 grains , and a ...
... pound of wool into a thread 168 thousands yards long . And Mr. Boyle mentions that two grains and a half of silk was spun into a thread 300 yards in length . If a pound of silver , which , you know , con- tains 5760 grains , and a ...
Страница 27
... pounds is frequently required to separate them . As it is by this kind of attraction that the parts of solid bodies are kept together , so when any substance is separated or broken , it is only the attraction of cohesion that is ...
... pounds is frequently required to separate them . As it is by this kind of attraction that the parts of solid bodies are kept together , so when any substance is separated or broken , it is only the attraction of cohesion that is ...
Страница 41
... pounds , than upon one of a single pound . The consequence of this principle is , that all bodies at equal distances from the earth fall with equal velocity . Emma . What do you mean , papa , by D 2 ATTRACTION OF GRAVITATION . 41.
... pounds , than upon one of a single pound . The consequence of this principle is , that all bodies at equal distances from the earth fall with equal velocity . Emma . What do you mean , papa , by D 2 ATTRACTION OF GRAVITATION . 41.
Страница 45
... pound weight upon a china plate without any dan- ger of breaking , but if you let it fall from the height of only a few inches it will dash the china to pieces .. In the first case , the plate has only the pound weight to sustain , in ...
... pound weight upon a china plate without any dan- ger of breaking , but if you let it fall from the height of only a few inches it will dash the china to pieces .. In the first case , the plate has only the pound weight to sustain , in ...
Страница 46
... pounds weight . Charles . I do , for what is wanting in weight , is made up by velocity . Father . Can you tell me what velocity a cannon ball of 28 pounds must have to ef- fect the same purposes , as would be produc- ed 46 MECHANICS .
... pounds weight . Charles . I do , for what is wanting in weight , is made up by velocity . Father . Can you tell me what velocity a cannon ball of 28 pounds must have to ef- fect the same purposes , as would be produc- ed 46 MECHANICS .
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air-pump ascend attraction axis ball bladder bottle bottom bucket bulk called centre Charles cock consequently CONVERSATION copper cork cubical cubical foot descend diameter distance diurnal motion earth eclipse Emma equal equator experiment explain fall Father feet filled fixed stars force glass globe gold grains Gravity of Bodies greater guinea heavens heavier than water hydrometer hydrostatics immersed inches inclined plane James length less lever light lighter means Mercury millions of miles moon motion move orbit ounces papa particles piece pint pipe piston planets Plate polar circles pound pound weight pressure of fluids principle proportion pump quantity of water quicksilver retrograde motion rise round Saturn side silver sink small tube space specific gravity spirits of wine square superior planets Suppose surface syphon tion turn Tutor upward pressure valve velocity vessel weight wine wood
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Страница 312 - Ask for what end the heavenly bodies shine, Earth for whose use? Pride answers, " 'Tis for mine: For me kind nature wakes her genial power, Suckles each herb, and spreads out every flower; Annual for me, the grape, the rose renew The juice nectareous, and the balmy dew ; For me, the mine a thousand treasures brings; For me health gushes from a thousand springs; Seas roll to waft...
Страница 314 - And choral symphonies, day without night Circle his throne rejoicing; ye in heaven, On earth join all ye creatures to extol Him first, him last, him midst, and without end. Fairest of stars, last in the train of night, If better thou belong not to the dawn, Sure pledge of day, that crown'st the smiling mom With thy bright circlet, praise him in thy sphere, While day arises, that sweet hour of prime.
Страница 290 - Less than archangel ruined, and the excess Of glory obscured ; as when the sun, new risen, Looks through the horizontal misty air Shorn of his beams, or from behind the moon, In dim eclipse, disastrous twilight sheds On half the nations, and with fear of change Perplexes monarchs.
Страница 204 - Of thirty years, to Mercury, whose disk Can scarce be caught by philosophic eye, Lost in the near effulgence of thy blaze.
Страница 86 - The horizontal distance to which a fluid will spout from a horizontal pipe in any part of the side of an upright vessel, below the surface of the fluid, is equal to twice the length of a perpendicular to the side of the vessel, drawn from the mouth of the pipe to a semicircle described upon the...
Страница 206 - THE sun revolving on his axis turns, And with creative fire intensely burns ; Impell'd the forcive air, our earth supreme Rolls with the planets round the solar gleam. First Mercury completes his transient year, Glowing,. refulgent, with reflected glare ; Bright Venus occupies a wider way, The early harbinger of night and day ; More distant still our globe terraqueous turns...
Страница 129 - Hence he inferred that, though of equal weight, the bulk of the silver was greater than that of the gold, and that the quantity of water displaced was, in each experiment, equal to the bulk of the metal. He...
Страница 341 - ... disappointed. The third was that which appeared in 1680, and its period being estimated at 575 years cannot, upon that supposition, return until the year 2255. This last comet at its greatest distance is eleven thousand two hundred millions- of miles from the sun, and its least distance from the sun's centre was but...
Страница 351 - How distant some of these nocturnal suns ! So distant (says the sage) 'twere not absurd To doubt if beams, set out at Nature's birth, Are yet arrived at this so foreign world, Though nothing half so rapid as their flight.
Страница 14 - That is a difficult word ? what are we to understand by it ? words, which signify water, and the science which considers the weight of bodies. But hydrostatics, as a branch of natural philosophy, treats of the nature, gravity, pressure, and motion of fluids in general ; and of the methods of weighing solids in them. Charles. Is this an important part of knowledge ? Father.