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The Daily Dispatch: may 10, 1861., [Electronic resource] 4 0 Browse Search
The Daily Dispatch: May 29, 1863., [Electronic resource] 3 1 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 1 1 Browse Search
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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
it varied in strength. It was strongest in the center, but extended to both sides of the mantel-piece; this upward current had a force of from 15 to 4 1/2 grains to the square foot; the force diminished as the fire got low, but the same action went on even when the fire was extinguished. Anemometer. The greatest pressure of wind ever registered at Glasgow Observatory was 55 lbs. per foot. Professor Airy, however, states that it may reach 80 lbs. per foot in this country, while Mr. Scott Russell asserts that 40 lbs. per foot is about the maximum force which it is necessary to reckon upon in constructing roofs etc. This is identical with the maximum registered at Menai Bridge. A-nemo-scope. An instrument for showing the course or direction of the wind. A weathercock. It is related that Andronicus Cyrrhestes built an octagonal tower at Athens, having at each side a statue of the god to whom the wind blowing from that quarter was dedicated; and in the middle of the towe