Fick's First Law


Fick's First Law
 Fick's First Law
 Первый закон Фика
  Количество вещества, переносимое в результате диффузии за единицу времени через сечение, равное единице площади (поток диффузии) прямо пропорционально градиенту концентрации. Эта зависимость наблюдается при стационарном состоянии системы, когда величина потока вещества не зависит от времени. В случае нестационарной диффузии скорость изменения концентрации пропорциональна второй производной концентрации по координате (второй закон Фика).

Толковый англо-русский словарь по нанотехнологии. - М.. . 2009.

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  • Fick's first law — the diffusion flux is proportional to the concentration gradient; this relationship is employed for steady state diffusion situations …   Mechanics glossary

  • Fick's first law of diffusion formula etc. — (fiks) [Adolf Eugen Fick, German physiologist, 1829–1901] see under formula, law, method, and principle …   Medical dictionary

  • Fick's first law of diffusion — a substance will diffuse through an area at a rate which is dependent upon the difference in concentration of the substance at two given points …   Medical dictionary

  • Fick's law of diffusion — Fick s laws of diffusion describe diffusion and can be used to solve for the diffusion coefficient D . They were derived by Adolf Fick in the year 1855. First law Fick s first law relates the diffusive flux to the concentration field, by… …   Wikipedia

  • law — Fick s first law Fick s second law Hooke s law Neumann s law …   Mechanics glossary

  • Fick's laws of diffusion — For the technique of measuring cardiac output, see Fick principle. Molecular diffusion from a microscopic and macroscopic point of view. Initially, there are solute molecules on the left side of a barrier (purple line) and none on the right. The… …   Wikipedia

  • Fick's law — fiks n a law of chemistry and physics: the rate of diffusion of one material in another is proportional to the negative of the gradient of the concentration of the first material …   Medical dictionary

  • law — 1. A principle or rule. 2. A statement of fact detailing a sequence or relation of phenomena that is invariable under given conditions. SEE ALSO: principle, rule, theorem. [A.S. lagu] Alexander l. states that a jerky nystagmus becomes worse when… …   Medical dictionary

  • fick's law — ˈfiks noun Usage: usually capitalized F Etymology: after Adolf Fick died 1901 German physiologist : a law of chemistry and physics: the rate of diffusion of one material in another is proportional to the negative of the gradient of the… …   Useful english dictionary

  • Ohm's law — This article is about the law related to electricity. For other uses, see Ohm s acoustic law. V, I, and R, the parameters of Ohm s law. Ohm s law states that the current through a conductor between two points is directly proportional to the… …   Wikipedia