The Life of James Watt: With Selections from His CorrespondenceD. Appleton & Company, 1859 - 424 páginas |
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Página 51
... quantity of heat which is contained in steam in a latent state . But the great variety of curious and abstruse phenomena which were explicable by this branch of the theory made it a subject of much conversation among the young gentlemen ...
... quantity of heat which is contained in steam in a latent state . But the great variety of curious and abstruse phenomena which were explicable by this branch of the theory made it a subject of much conversation among the young gentlemen ...
Página 52
... quantity of steam was wasted . The great heat acquired in an instant by the cylinder , by the admission of a few grains of water in the form of steam , was an incontestable proof of the great quantity of fire contained in it ; and as ...
... quantity of steam was wasted . The great heat acquired in an instant by the cylinder , by the admission of a few grains of water in the form of steam , was an incontestable proof of the great quantity of fire contained in it ; and as ...
Página 60
... contents . It was found that by short- ening the column of water in the pump , the boiler could supply the cylinder with steam , and that the engine would work regu- HIS OWN NARRATIVE . 6 ly with a moderate quantity 60 LIFE OF WATT .
... contents . It was found that by short- ening the column of water in the pump , the boiler could supply the cylinder with steam , and that the engine would work regu- HIS OWN NARRATIVE . 6 ly with a moderate quantity 60 LIFE OF WATT .
Página 61
... quantity of injection . It now appeare that the cylinder of the model , being of brass , would conduct hea much ... quantities of steam to heat it again , out of proportion o the power gained by the more perfect vacuum , and that the old ...
... quantity of injection . It now appeare that the cylinder of the model , being of brass , would conduct hea much ... quantities of steam to heat it again , out of proportion o the power gained by the more perfect vacuum , and that the old ...
Página 62
... quantity of water was for the third time evaporated , and , while the flask was still cold , it was placed in- verted , with its mouth ( contracted by the tube ) immersed in a vessel of water , which it sucked in as it cooled , until in ...
... quantity of water was for the third time evaporated , and , while the flask was still cold , it was placed in- verted , with its mouth ( contracted by the tube ) immersed in a vessel of water , which it sucked in as it cooled , until in ...
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Términos y frases comunes
acquaintance afterwards air-pump appears applied April axis Birmingham Black Blagden boiler Boulton and Watt CALEDONIAN CANAL canal Cavendish common composition of water condenser construction contrivance cylinder dephlogisticated air discovery drawing employed engine executed experiments feet fire fixed gine give Glasgow glass Greenock honour Humphry Davy improvements inches diameter inflammable air ingenious instrument invention inventor James Watt labour latent heat Lavoisier letter Loch Oich London Lord machine manufacture Marquis of Worcester means mechanical ments method mind Murdock Natural Philosophy nature nearly never Newcomen's opinion paper Papin patent Philosophical phlogiston pipe piston piston-rod present Priestley Priestley's principles pump quantity Robison Roebuck rotative motion Royal Society Savery says Soho soon specification steam steam-engine stroke survey theory thing thought tion tube University of Glasgow vacuum valve vessel Watt's weight wheels whole writes
Pasajes populares
Página 266 - Dictionary was written with little assistance of the learned, and without any patronage of the great ; not in the soft obscurities of retirement, or under the shelter of academick bowers, but amidst inconvenience and distraction, in sickness and in sorrow.
Página vi - Phoebus replied, and touched my trembling ears: "Fame is no plant that grows on mortal soil, Nor in the glistering foil Set off to the world, nor in broad rumour lies, But lives and spreads aloft by those pure eyes And perfect witness of all-judging Jove; As he pronounces lastly on each deed, Of so much fame in heaven expect thy meed.
Página 91 - An admirable and most forcible way to drive up water by fire, not by drawing or sucking it upwards, for that must be as the philosopher calleth it, infra spheeram activitatis, which is but at such a distance. But this way hath no bounder, if the vessels be strong enough ; for I have taken a piece of a whole cannon, whereof the end was burst, and filled it...
Página v - That life is not as idle ore, But iron dug from central gloom, And heated hot with burning fears, And dipt in baths of hissing tears, And batter'd with the shocks of doom To shape and use.
Página 329 - Nor was this all the honour done to his reverend ashes; for as there be some persons that will not receive a reward for that for which God accounts Himself a debtor; persons that dare trust God with their charity, and without a witness; so there was, by some grateful unknown friend, that thought Dr.
Página 393 - Swedish artist having been instructed by him that rats' whiskers make the most pliant and elastic painting-brush ; ladies would appeal to him on the best means of devising grates, curing smoking chimneys, warming their houses, and obtaining fast colours. I can speak from experience of his teaching me how to make a dulcimer and improve a Jew's harp.
Página 64 - The means of accomplishing these points did not immediately present themselves ; but early in 1765 it occurred to me, that if a communication were opened between a cylinder containing steam, and another vessel which was exhausted of air and other fluids, the steam, as an elastic fluid, would immediately rush into the empty vessel, and continue to do so until it had established an equilibrium ; and if that vessel were kept very cool by an injection or otherwise, more steam would continue to enter...
Página 402 - By his admirable contrivance, it has become a thing stupendous alike for its force and its flexibility, for the prodigious power which it can exert, and the ease, and precision, and ductility, with which it can be varied, distributed, and applied. The trunk of an elephant, that can pick up a pin or rend an oak, is as nothing to it. It can engrave a seal, and crush masses of obdurate metal before it ; draw out, without breaking, a thread as fine as gossamer, and lift a ship of war like a bauble in...
Página 331 - Description and Draught of a new-invented MACHINE for carrying vessels or ships out of or into any harbour, port or river, against wind and tide, or in a calm...
Página 402 - It can engrave a seal, and crush masses of obdurate metal like wax, before it, — draw out, without breaking, a thread as fine as gossamer, and lift a ship of war like a bauble in the air. It can embroider muslin, and forge anchors, — cut steel into ribands, and impel loaded vessels against the fury of the winds and waves.