This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1874 Excerpt: ...to 8TM." (3.) The velocity of the evaporation increases with the temperature, so far as with this the vapour-pressure of the liquid rises. If; be tho maximum of elasticity of the vapour corresponding to the temperaturo of tho observation, P the atmospheric pressure under which the liquid evaporates, the velocity of the ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1874 Excerpt: ...to 8TM." (3.) The velocity of the evaporation increases with the temperature, so far as with this the vapour-pressure of the liquid rises. If; be tho maximum of elasticity of the vapour corresponding to the temperaturo of tho observation, P the atmospheric pressure under which the liquid evaporates, the velocity of the evaporation is proportional to the logarithm of a fraction of which P is the numerator and P-/ the denominator. If tho pressure of the vapour becomes equal to that of the air, this logarithm becomes infinitely great, and signifies that under this condition the liquid boils. Interruption to tho Atmosphere's Poicer of Conducting Sound.--One of the most interesting and important papers that have appeared in that Journal for some years is that by Professor Tyndall on his experiments on the conveyance of fog-signals (P.ll.S. 149). It will be found in full at p. 175. Incandescent Substances Transmitting Electricity.--M. Donlot contributes a paper on this subject to the " Comptes Rendus" (December 22, 1874). He says that carbon and platinum act oppositely. Thus, a cylinder of glowing charcoal being substituted for the ball of an electroscope, if one bring near a positively charged body, the leaves will quickly diverge till they are discharged by the metallic balls on either side; then diverge again, and be ngain discharged; and so on, as long as the electrified body is held near. If it be removed before the leaves reach the balls, they remain apart, with positive electricity; thus the carbon has allowed the negative electricity to flow off. The results are different where a negatively electrified body is used. The electroscope is affected only at a very small distance; the leaves separate lees quickly, and they come together promptly, ...
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Add this copy of The Popular Science Review, Volume 13 to cart. $62.65, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2010 by Nabu Press.
