Surface-energy Sentence Examples

surface-energy

  • Mendeleeff endeavoured to obtain a connexion between surface energy and constitution; more successful were the investigations of Schiff, who found that the " molecular surface tension," which he defined as the surface tension divided by the weight.

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  • Ramsay and Shields suggested that there exists an equation for the surface energy of liquids, analogous to the volume-energy equation of gases, PV = RT.

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  • Similarly with two liquids like oil and water, which do not mix, we have surface energy proportional to the area of contact.

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  • The ordinary surface energy of a two-phase system tends to diminish the area of contact, and thus to help the growth of the larger aggregates required for coagulation.

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  • The function of the electrolyte may be to annul such a natural charge and thus allow the non-electric surface energy to produce coagulation.

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  • We may call this the surface energy.

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  • When the liquid is in contact with a rare medium, such as its own vapour or any other gas, x is greater than xo, and the surface energy is positive.

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  • Let T be the surface energy per unit of area; then the energy of a surface of area S will be ST.

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  • It has, therefore, a certain amount of surface-energy depending on the area of these two surfaces.

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  • If the bubble is in the form of a sphere of radius r this material surface will have an area S = 41rr 2 (I) If T be the energy corresponding to unit of area of the film the surface-energy of the whole bubble will be ST = 41rr 2 T (2) The increment of this energy corresponding to an increase of the radius from r to r-+dr is therefore TdS = 81rrTdr (3) Now this increase of energy was obtained by forcing in air at a pressure greater than the atmospheric pressure, and thus increasing the volume of the bubble.

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  • Hence the numerical value of the intensity of the surface-tension is equal to the numerical value of the surface-energy per unit of surface.

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  • A measure of the relative facet areas allows us to calculate a relative surface energy ratio E 001 / E 111 = 1.4.

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  • Satellite remote sensing with aim of improving knowledge of ice sheet topography, ice dynamics and surface energy balance.

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