讀者評論 - 撰寫評論
其他版本 - 查看全部
acid advantage angle apparatus appears applied Argand burner boat boiler braces Bude light burner canal carbonic acid carriage cast iron cause centre Charles Blagden chemical affinity Clovis coal common conductors construction copper cylinder diameter diving bell effect Ellesmere Canal employed engine engraving equal experiments feet fire flame fluid glass heat horses improvements inches invention iron John Robison labour lamp length letter light Liverpool London machine machinery mandril manufacture mastic means Mechanics ment Messrs metal miles minutes mode motion object observed obtained operation paddle paddle-wheel paper passing patent piece pipe piston plate present pressure principle produced propelling pulley purpose quantity railway ratus rectangular floats render rope screw shaft ship side six months steam steam-engine stove sufficient surface Telford tion trapezium floats treenails tube valve vessel weight wheel whole wood zinc
第 451 頁 - Almighty's form Glasses itself in tempests; in all time, Calm or convulsed — in breeze or gale or storm, Icing the pole, or in the torrid clime, Dark-heaving, boundless, endless and sublime — The image of eternity — the throne Of the Invisible; even from out thy slime The monsters of the deep are made; each zone Obeys thee; thou goest forth, dread, fathomless, alone.
第 90 頁 - April, 1783, in which he reasons on the experiment of burning the two gases in a close vessel, and draws the conclusion, " that water is composed of dephlogisticated air and phlogiston, deprived of part of their latent heat."* The letter was received by Dr.
第 89 頁 - Priestley's 5th volume,* gave rise to this inquiry, at least in England ; Mr. Cavendish expressly refers to it, as having set him upon making his experiments. — (Phil. Trans. 1784, p. 126.) The experiment of Mr. Warltire consisted in firing, by electricity, a mixture of inflammable and common air in a close vessel, and two things were said to be observed : first, a sensible loss of weight ; second, a.
第 93 頁 - Cavendish's priority as he was, that Mr. Watt had ever heard of Mr. Cavendish's theory before he formed his own. Whether or not Mr. Cavendish had heard of Mr. Watt's theory previous to drawing his conclusions, appears more doubtful. The supposition that he had so heard, rests on the improbability of his (Sir Charles Blagden's,) and many others knowing what Mr. Watt had done, and not communicating it to Mr. Cavendish, and on the omission of any assertion in Mr. Cavendish's paper, even in the part...
第 91 頁 - Cavendish leaves it uncertain, whether or not he meant by phlogiston simply inflammable air, and he inclines rather to call inflammable air, water united to phlogiston. Mr. Watt says expressly, even in his later paper (of November 1783), and in a passage not to be found in the letter of April 1783, that he thinks that inflammable air contains a small quantity of water, and much elementary heat. It must be admitted that such expressions as these on the part of both of those great men, betoken a certain...
第 382 頁 - Judge not the Lord by feeble sense, But trust Him for His grace ; Behind a frowning providence He hides a smiling face. Blind unbelief is sure to err And scan His work in vain ; God is His own interpreter, And He will make it plain.
第 222 頁 - No person shall adopt any such registered design on any article of manufacture for sale, either wholly or partially, by making any addition to any original part thereof, or by making any subtraction from any original part thereof: And if any person commit any such act, he shall for every offence forfeit a sum not less than five pounds and not exceeding thirty pounds, to the proprietor of the design, in respect of which such offence has been committed.
第 361 頁 - The amendment was then withdrawn, and the bill was read a second time, and ordered to be referred to a select committee. MODE OF CONDUCTING MINES IN BELGIUM. At a recent meeting of the " Scientific Society," the secretary read a communication from Mr.