Essays, Political, Economical, and Philosophical, 2. sējumsT. Cadell jun. and W. Davies, 1798 |
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Essays, Political, Economical, and Philosophical, 2. sējums Benjamin Graf von Rumford Fragmentu skats - 1796 |
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againſt almoſt alſo appears atmoſphere Avoirdupois bafin bodies Boiler boiling water bottom bulb cafe caufe cauſe circumftance clofed cloſed cold combuftion condenfed conducting power confequently confiderable conftructed cooling courſe covered cylinder defcend degrees diminiſhed exiſtence falt fame ferved feven fhall fhould fhow fide filk Fire fire-place firſt flame flues fluid fmall folid fome foon freezing freſh fteam ftill fubftance fubject fuch Fuel fufficient fuppofed furface furniſhed furrounded glafs glaſs grains hot water Houſe ice-cold water inches inches in diameter increaſed inftrument inſtead intenſe intereſting internal motions inveſtigation iron juſt Kitchen lefs liquid mafs manner maſs meaſure melted mercury moſt Munich muſt myſelf neceffary non-conductor of Heat obferved occafioned paffage paffing particles paſs poffible procefs purpoſe quantity of Heat reaſon refpecting refults regiſter ſmall ſpace ſpecific gravity ſteam ſtill temperature thefe thermometer theſe Experiments thofe thoſe tube uſed wood
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482. lappuse - This being done, the box was put in its place, and the joinings of the iron rod an'd of the neck of the cylinder with the two ends of the box having been made watertight by means of collars of oiled leather, the box was filled with cold water (viz. at the temperature of 60'), and the machine was put in motion. The result of this beautiful experiment was very striking, and the pleasure it afforded me amply repaid me for all the trouble I had had in contriving and arranging the complicated machinery...
484. lappuse - BOILED ! It would be difficult to describe the surprise and astonishment expressed in the countenances of the bystanders, on seeing so large a quantity of cold water heated, and actually made to boil, without any fire.
470. lappuse - Being engaged lately in superintending the boring of cannon in the workshops of the military arsenal at Munich, I was struck with the very considerable degree of Heat which a brass gun acquires in a short time in being bored, and with the still more intense Heat (much greater than that of boiling water, as I found by experiment) of the metallic chips separated from it by the borer.
493. lappuse - ... it appears to me to be extremely difficult, if not quite impossible, to form any distinct idea of anything capable of being excited and communicated in the manner the Heat was excited and communicated in these experiments, except it be MOTION.
492. lappuse - ... should appear, I could perceive none; nor was there any sign of decomposition of any kind whatever, or other chemical process, going on in the water. Is it possible that the...
488. lappuse - ... further how large a quantity of heat might be produced by proper mechanical contrivance, merely by the strength of a horse, without either fire, light, combustion, or chemical decomposition; and, in a case of necessity, the heat thus produced might be used in cooking victuals.
482. lappuse - ... of the other end of it, it is evident that the machinery could be put in motion, without the least danger of forcing the box out of its place, throwing the water out of it, or deranging any part of the apparatus.
482. lappuse - Every thing being ready, I proceeded to make the Experiment I had projected, in the following manner: The hollow cylinder having been previously cleaned out, and the inside of its bore wiped with a clean towel till it was quite dry, the square iron bar, with the blunt steel borer fixed to the end of...
494. lappuse - Nobody, surely, in his sober senses, has ever pretended to understand the mechanism of gravitation; and yet what sublime discoveries was our immortal Newton enabled to make, merely by the investigation of the laws of its action ! The effects produced in the world by the agency of Heat are probably...
478. lappuse - But without insisting on the improbability of this supposition, we have only to recollect, that from the results of actual and decisive experiments, made for the express purpose of ascertaining that fact, the capacity for Heat of the metal of which great guns are cast is...