Lives of Philosophers of the Time of George III.R. Griffin, 1855 - 492 עמודים |
מתוך הספר
תוצאות 1-5 מתוך 22
עמוד 12
... hydrogen gas was perfectly known to him , and both its qualities of being inflammable and of being so much lighter than atmospheric air ; for as early as 1766 he invented the air balloon , showing a party of his friends the ascent of a ...
... hydrogen gas was perfectly known to him , and both its qualities of being inflammable and of being so much lighter than atmospheric air ; for as early as 1766 he invented the air balloon , showing a party of his friends the ascent of a ...
עמוד 14
... hydrogen gas , and which has changed the whole aspect of chemical science , was founded mainly upon the doctrines of latent and specific heat . It was thus the singular fe- licity of Black to have furnished both the pillars upon which ...
... hydrogen gas , and which has changed the whole aspect of chemical science , was founded mainly upon the doctrines of latent and specific heat . It was thus the singular fe- licity of Black to have furnished both the pillars upon which ...
עמוד 48
... hydrogen and oxygen gases , then called inflammable , and vital or dephlogisticated airs . No former reasoner had come even near the true theory of the phenomena observed in those experiments . All had assumed that water was a simple or ...
... hydrogen and oxygen gases , then called inflammable , and vital or dephlogisticated airs . No former reasoner had come even near the true theory of the phenomena observed in those experiments . All had assumed that water was a simple or ...
עמוד 58
... hydrogen gases ) , and the deposit was always more or less acidulous , accord- ingly as the air burnt with the inflammable air was more or less phlogisticated . The acid was found to be nitrous . Mr. Cavendish states , that " almost the ...
... hydrogen gases ) , and the deposit was always more or less acidulous , accord- ingly as the air burnt with the inflammable air was more or less phlogisticated . The acid was found to be nitrous . Mr. Cavendish states , that " almost the ...
עמוד 60
... hydrogen gases in a close vessel , and finding pure water to be the produce of the combustion . Secondly , That , in the same paper , he drew from this experiment the conclusion that the two gases were con- verted or turned into water ...
... hydrogen gases in a close vessel , and finding pure water to be the produce of the combustion . Secondly , That , in the same paper , he drew from this experiment the conclusion that the two gases were con- verted or turned into water ...
מהדורות אחרות - הצג הכל
מונחים וביטויים נפוצים
Academy acid ADAM SMITH admirable admitted afterwards alkalis ancient appears Black bodies branches calcination calculus capital Cavendish Charles Blagden chemical Clairaut combustion common air D'Alembert discovered discovery doctrine early eminent Encyclopédie equal Euler experiments favour fixed air fluid formed gases gave geometrician geometry give given Glasgow honour hydrogen illustrious important inflammable inflammable air inquiries investigation kind labour latent heat Lavoisier lectures letter Lord mathematical Memoirs ment mentioned merit metals motion nature never nitrous acid observed obtained opinion oxygen oxygen gas person philosopher phlogiston porism Priestley principles produce Professor profit proposition published pursuits regard remarkable rent respecting Robert Simson Royal Society says scientific Simson Sir Joseph Banks Smith solution steam studies substance supposed theory thing tion trade truth Voltaire wages Watt Watt's Wealth of Nations whole wholly writings
קטעים בולטים
עמוד 58 - Cavendish's), last summer (that is, 1783), gave some account of them to M. Lavoisier, as well as of the conclusion drawn from them, that dephlogisticated air is only water deprived of its phlogiston ; but, at that time, so far was M. Lavoisier from thinking any such opinion warranted, that till he was prevailed upon to repeat the experiment himself, he found some difficulty in believing that nearly the whole of the two airs could be converted into water.
עמוד 262 - I might be inclined to entertain some such thought; but a great flood stops me in my course. Opposuit natura — I cannot remove the eternal barriers of the creation. The thing, in that mode, I do not know to be possible. As I meddle with no theory, I do not absolutely assert the impracticability of such a representation. But I do not see my way to it ; and those who have been more confident have not been more successful.
עמוד 283 - The life which I led at Glasgow was a pleasurable dissipated life in comparison of that which I lead here at Present. I have begun to write a book in order to pass away the time.
עמוד 417 - D'Alembert, was the Precession of the equinoxes and the Nutation of the earth's axis, according to the theory of gravitation.
עמוד 228 - To judge whether such retaliations are likely to produce such an effect, does not, perhaps, belong so much to the science of a legislator, whose deliberations ought to be governed by general principles which are always the same, as to the skill of that insidious and crafty animal, vulgarly called a statesman or politician, whose councils are directed by the momentary fluctuations of affairs.
עמוד 344 - Plurimum audaciae ad pericula capessenda, plurimum consilii inter ipsa pericula erat. Nullo labore aut corpus fatigan aut animus vinci poterat.
עמוד 58 - ... four-fifths of the common air employed ; so that as common air cannot be reduced to a much less bulk than that by any method of phlogistication, we may safely conclude, that when they are mixed in this proportion, and exploded, almost all the inflammable air, and about one-fifth part of the common air, lose their elasticity, and are condensed into the dew which lines the glass.
עמוד 52 - ... and encouragement to all young persons who showed any indications of talent, or applied to him for patronage or advice. His health, which was delicate from his youth upwards, seemed to become firmer as he advanced in years, and he preserved up almost to the last moment of his existence, not only the full command of his extraordinary intellect, but all the alacrity of spirit, and the social gaiety which had illumined his happiest days.
עמוד 204 - Those leaders themselves, though they originally may have meant nothing but their own aggrandisement, become many of them in time the dupes of their own sophistry, and are as eager for this great reformation as the weakest and foolishest of their followers. Even though the leaders should have preserved their own heads, as indeed they commonly do, free from this fanaticism, yet they dare not always disappoint the expectation of their followers; but are often obliged, though contrary to their principle...
עמוד 19 - It remains to consider him as a teacher ; and certainly nothing could be more admirable than the manner in which for forty years he performed this useful and dignified office. His style of lecturing was as nearly perfect as can well be conceived ; for it had all the simplicity which is so entirely suited to scientific discourse, while it partook largely of the elegance which characterized all he said or did. The publication of his lectures has conveyed an accurate idea of the purely analytical order...