A History of Science, Band 6Harper, 1910 - 227 Seiten |
Inhalt
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
acetylene apparatus applied armature atoms bulb burner burning calcium carbide candle carbide carbon cars cent century coal coils commercial condensation connected course Ctesibius current of electricity cylinder developed distance drill dynamo Edison electric current electric light electrons energy experiments explosion fact familiar feet filament fire damp flame fluid force furnaces gas engine gases heat Henry Bessemer horse-power hundred idea important incandescent inches invention inventor iron James Watt Lake Superior lamp lever locomotive machine machinery magnetic mantle manufacture mechanism metal method mines modern motor muscle Newcomen Newcomen engine Niagara nitrogen operation ordinary particles piston poles possible pound weight power-house practical pressure principle produced pump purposes quantity relatively revolve rotary shaft shovel steam engine steel substance supplied surface temperature theory thousand tical tion tons trolley trolley pole tube turbine utilized valve voltaic voltaic cell Watt weight wheel wire
Beliebte Passagen
Seite 85 - One vessel of water rarefied by fire driveth up forty of cold water ; and a man that tends the work is but to turn two cocks, that, one vessel of water being consumed, another begins to force and refill with cold water, and so successively, the fire being tended and kept constant, which the selfsame person may likewise abundantly perform in the interim, between the necessity of turning the said cocks.
Seite 111 - There was nothing of effort, indeed, or impatience, any more than of pride or levity, in his demeanour ; and there was a finer expression of reposing strength, and mild self-possession in his manner, than we ever recollect to have met with in any other person. He had in his character the utmost abhorrence for all sorts of forwardness, parade, and pretensions ; and indeed never failed to put all such impostures out of countenance, by the manly plainness and honest intrepidity of his language and deportment.
Seite 108 - ... jocularity, which gave infinite zest and effect to the condensed and inexhaustible information which formed its main staple and characteristic. There was a little air of affected testiness, and a tone of pretended rebuke and contradiction, with which he used to...
Seite 84 - 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...
Seite 98 - Thirdly, whatever air or other elastic vapour is not condensed by the cold of the condenser, and may impede the working of the engine, is to be drawn out of the steam vessels, or condensers, by means of pumps, wrought by the engines themselves, or otherwise.
Seite 108 - Nor was this promptitude and compass of knowledge confined in any degree to the studies connected with his ordinary pursuits. That he should have been minutely and extensively skilled in chemistry and the arts, and in most of the branches of physical science, might perhaps have been conjectured ; but it could not have been inferred from his usual occupations} and probably is not generally known, that he was curiously learned in many branches of antiquity, metaphysics, medicine, and etymology, and...
Seite 220 - When pieces of charcoal about an inch long and onesixth of an inch in diameter, were brought near each other (within the thirtieth or fortieth part of an inch) a bright spark was produced, and more than half the volume of the charcoal became ignited to whiteness, and by withdrawing the points from each other a constant discharge took place through the heated air, in a space equal at least to four inches, producing a most brilliant ascending arch of light, broad, and conical in form in the middle.
Seite 98 - ... it in a case of wood, or any other materials that transmit heat slowly; secondly, by surrounding it with steam or other heated bodies; and...
Seite 84 - I have taken a piece of whole cannon, whereof the end was burst, and filled it three-quarters full of water, stopping and screwing up the broken end, as also the touch-hole; and making a constant fire under it, within twenty-four hours it burst and made a great crack; so that having a way to make my vessels so that they are strengthened by the force within them, and the one to fill after...
Seite 111 - ... out of countenance, by the manly plainness and honest intrepidity of his language and deportment. In his temper and dispositions he was not only kind and affectionate, but generous, and considerate of the feelings of all around him, and gave the most liberal assistance and encouragement to all young persons who shewed any indications of talent, or applied to him for patronage or advice.