Scientific Dialogues, Volume 2M. Carey, 1815 - 260 páginas |
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Página 45
... respecting the velocity of moving bodies , you will easily comprehend what is meant by the word momentum . The momentum , or moving force of a body , is its weight multiplied into its veloci- ty . You may , for instance , place this ...
... respecting the velocity of moving bodies , you will easily comprehend what is meant by the word momentum . The momentum , or moving force of a body , is its weight multiplied into its veloci- ty . You may , for instance , place this ...
Página 72
... respects ? Father . We bend forward , when we go up stairs , or rise from our chair , for when we are sitting , our centre of gravity is on the seat , and the line of direction falls be- hind our base ; we therefore lean forwards to ...
... respects ? Father . We bend forward , when we go up stairs , or rise from our chair , for when we are sitting , our centre of gravity is on the seat , and the line of direction falls be- hind our base ; we therefore lean forwards to ...
Página 142
... respect to sup- port them , consequently they would require a power equal to their whole weight to keep them from descending . Charles . And the swiftness with which a body falls is to be estimated by the force with which it is acted ...
... respect to sup- port them , consequently they would require a power equal to their whole weight to keep them from descending . Charles . And the swiftness with which a body falls is to be estimated by the force with which it is acted ...
Página 167
... each , singly , afford such optical deceptions , I can no longer doubt , but that , if both these causes are combined as you say they are with respect to the rays of light coming from the fixed stars , a thou- OF THE FIXED STARS , 167.
... each , singly , afford such optical deceptions , I can no longer doubt , but that , if both these causes are combined as you say they are with respect to the rays of light coming from the fixed stars , a thou- OF THE FIXED STARS , 167.
Página 178
... respect to each other , though their situation , with regard to the heavens , will be different at different seasons of the year , and in different hours of the night . Let us go into the garden . Charles . The stars are all in the same ...
... respect to each other , though their situation , with regard to the heavens , will be different at different seasons of the year , and in different hours of the night . Let us go into the garden . Charles . The stars are all in the same ...
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Scientific Dialogues: Intended for the Instruction and ..., Volume 2 Jeremiah Joyce Visualização integral - 1829 |
Palavras e frases frequentes
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
Passagens conhecidas
Página 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...
Página 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.
Página 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.
Página 204 - Of thirty years, to Mercury, whose disk Can scarce be caught by philosophic eye, Lost in the near effulgence of thy blaze.
Página 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...
Página 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...
Página 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...
Página 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...
Página 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.
Página 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.