Report of the Annual Meeting, Том 31Office of the British Association, 1862 |
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Стр. 84
... formula C = 250 , and the consumption of coal being at the rate of 2lbs . per indicated horse - power per hour , which data have been assumed as the base of the fol- lowing tabular statement , consisting of 21 columns , the purport of ...
... formula C = 250 , and the consumption of coal being at the rate of 2lbs . per indicated horse - power per hour , which data have been assumed as the base of the fol- lowing tabular statement , consisting of 21 columns , the purport of ...
Стр. 85
... as deduced from actual trial of the = C , which may be ships , and calculated by the following formula expressed as follows : - Ꮩ Ꭰ ? Ind . h.p. - 1 2 3 4 5 6 7 8 9 10 ON FREIGHT AS AFFECTED BY DYNAMIC PROPERTIES . 85.
... as deduced from actual trial of the = C , which may be ships , and calculated by the following formula expressed as follows : - Ꮩ Ꭰ ? Ind . h.p. - 1 2 3 4 5 6 7 8 9 10 ON FREIGHT AS AFFECTED BY DYNAMIC PROPERTIES . 85.
Стр. 88
... formula is applied would be irrelevant to the matter now under consideration . Suffice it to say that the numeral co - efficient obtained as above set forth affords practically a means by which the mutual relations of displacement ...
... formula is applied would be irrelevant to the matter now under consideration . Suffice it to say that the numeral co - efficient obtained as above set forth affords practically a means by which the mutual relations of displacement ...
Стр. 93
... formula W exceeding 5600 , whilst modern naval architecture and engineering have prac- tically shown that with certain types of form the coefficient of performance may be expected to vary from 250 to 300 , and that some engines of ...
... formula W exceeding 5600 , whilst modern naval architecture and engineering have prac- tically shown that with certain types of form the coefficient of performance may be expected to vary from 250 to 300 , and that some engines of ...
Стр. 151
... formula Q = 0 · 317 H , where Q is the quantity of water in cubic feet per minute , and H the head of water , as measured vertically , in inches , from the still - water level of the pool down to the vertex of the notch . This formula I ...
... formula Q = 0 · 317 H , where Q is the quantity of water in cubic feet per minute , and H the head of water , as measured vertically , in inches , from the still - water level of the pool down to the vertex of the notch . This formula I ...
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acid ammonia amount appears Astronomer Royal atmosphere average bread British Association carbonic carbonic acid Carboniferous cent centre climate coast coefficient colour Committee contained David Brewster depth determinant dietary Dip Circle direction Dry hole earth effect equation experiments feet force formula given granite heat Holyhead Ibid inches increase iron Kew Observatory labour light lime lines magnetic Makerstoun Manchester manufacture manure matter means metal meteor miles nearly nitrate of soda Observatory observed obtained ounces period pint plates portion present pressure prisoners produced Professor quadratic forms quantity quartz R. I. Murchison reference remarkable Report rocks Royal Scotland ship Silurian soda solution species sulphuric sulphuric acid superphosphate surface Table temperature thickness tion tons treadwheel tube velocity vessels weight whilst winds wires
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Стр. xvii - To give a stronger impulse and a more systematic direction to scientific inquiry, — to promote the intercourse of those who cultivate Science in different parts of the British Empire, with one another and with foreign philosophers, — to obtain a more general attention to the objects of Science, and a removal of any disadvantages of a public kind which impede its progress.
Стр. 25 - It is also impossible to conceive either the beginning or the continuance of life, without an overruling creative power ; and, therefore, no conclusions of dynamical science regarding the future condition of the earth can be held to give dispiriting views as to the destiny of the race of intelligent beings by which it is at present inhabited.
Стр. xli - That the gentlemen whose names are appended be requested to act as a Committee (with power to add to their number) for the purpose of carrying out the previous resolution and of reporting to an adjourned public meeting to be held during the second week in October next.
Стр. 131 - The German and Irish millions, like the Negro, have a great deal of guano in their destiny. They are ferried over the Atlantic and carted over America, to ditch and to drudge, to make corn cheap and then to lie down prematurely to make a spot of green grass on the prairie.
Стр. 102 - I conclude further, that the dark lines of the solar spectrum which are not evoked by the atmosphere of the earth, exist in consequence of the presence, in the incandescent atmosphere of the sun, of those substances which in the spectrum of a flame produce bright lines at the same place.
Стр. lxiii - When it is considered that stone bridges do not exceed 200 feet in span, nor cast-iron bridges 250 feet, we can estimate the progress which has been made in crossing rivers 400 or 500 feet in width, without any support at the middle of the stream. Even spans, greatly in excess of this, may be bridged over with safety, provided we do not exceed 1800 to 2000 feet, when the structure would be destroyed by its own weight.
Стр. liii - Newton to introduce, at a later period, the idea of an attraction varying directly as the mass, and inversely as the square of the distance, and thus to reduce celestial phenomena to tho greatest simplicity, by comprehending them under a single law.
Стр. lxv - Wray's compound and pure gutta-percha far surpass the commercial gutta-percha hitherto employed; but it remains to be seen whether the mechanical and commercial difficulties in the employment of these new materials can be successfully overcome. The external protecting covering is still a subject of anxious consideration. The objections to iron wire are its weight and liability to corrosion. Hemp has been substituted, but at present with no satisfactory result. All these difficulties, together with...
Стр. 149 - This formula is submitted at present temporarily as being accurate enough for use for ordinary practical purposes for the measurement of water by notches similar to the one experimented on, and for quantities of water limited to nearly the same range as those in the experiments ; but...
Стр. 101 - In the atmosphere around the sun, therefore, there must be present vapour of sodium, which, according to the mechanical explanation thus suggested, being particularly opaque for light of that quality prevents such of it as is emitted from the sun from penetrating to any considerable distance through the surrounding atmosphere.