The Principles of Hydrostatics: Designed for the Use of Students in the University

الغلاف الأمامي
J. Smith, 1812 - 120 من الصفحات

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الصفحة 79 - In calm frosty weather the mercury generally stands high, because (as I conceive) it seldom freezes but when the winds come out of the northern and north-eastern quarters, or at least unless those winds blow at no great distance off; for the northern parts of Germany, Denmark, Sweden, Norway, and all that • tract from whence north-eastern...
الصفحة 116 - ... pan of coals, we brought the water to the same degree of heat, which is observed to be that of the air in our hottest summers ; the thermometer nicely showing it. This done, we affixed the pan of water, with the thermometer in it, to one end of the beam of the scales, and exactly counterpoised it with weights in the other scale, and by the application or removal of the pan of coals, we found it very easy to maintain the water in the same degree of heat precisely. Doing thus, we found the weight...
الصفحة 78 - ... that they have no inclination to precipitate and fall down in drops ; which is the reason of the serene good weather, which attends the greater heights of the mercury.
الصفحة 80 - ... and ponderous air from the neighbourhood of the pole, and that again being checked by a southerly wind at no great distance, and so heaped, must of necessity make the mercury in such case stand higher in the other extreme.
الصفحة 118 - Mediterranean must lose in vapour, in a summer's day, at least 5280 millions of tons. And this quantity of vapour, though very great, is as little as can be concluded from the experiment produced. And yet there remains another cause, which cannot be reduced to...
الصفحة 79 - ... and confequently the mercury muft ftand high, as often as thefe winds blow. This holds true in this country, but is not a general...
الصفحة 118 - The Mediterranean receives these considerable rivers ; the Iberus, the Rhone, the Tiber, the Po, the Danube, the Niester, the Borysthenes, the Tanais, and the Nile, all the rest being of no great note, and their quantity of water inconsiderable.
الصفحة 77 - Within the tropics, and near them, those accounts we have had from others, and my own observations at St. Helena, make very little or no variation of the height of the mercury in all weathers.
الصفحة 118 - Mediterranean be estimated at 40 degrees long and four broad, allowances being made for the places where it is broader by those where it is narrower (and I am sure I guess at the least), there will be 160 square degrees of sea; and, consequently, tlie whole Mediterranean must lose in vapour, in a summer's day, at least 5280 millions of tons.
الصفحة 81 - Eflex , rifes and fwells by the meeting of the two contrary Tides of Flood , whereof the one comes from the SW along the Channel of England , and the other from the North ; and on the contrary...

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