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imaginary surface

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См. также в других словарях:

  • Surface of flotation — Flotation Flo*ta tion, n. [Cf. F. flottation a floating, flottaison water line, fr. flotter to float. See {Flotilla}.] 1. The act, process, or state of floating. [1913 Webster] 2. The science of floating bodies. [1913 Webster] 3. (Com. & Finance) …   The Collaborative International Dictionary of English

  • Surface plasmon — Surface plasmons, also referred to in the literature as surface plasma polaritons, are fluctuations in the electron density at the boundary of two materials. Plasmons are the collective vibrations of an electron gas (or plasma) surrounding the… …   Wikipedia

  • Surface normal — Normal vector redirects here. For a normalized vector, or vector of length one, see unit vector. A polygon and two of its normal vectors …   Wikipedia

  • pitch surface — noun Etymology: pitch (IV) : the surface of either of two tangent imaginary friction wheels having the same axes and the same angular velocities as those of a pair of real gears in mesh * * * (in a gear or rack) an imaginary surface forming a… …   Useful english dictionary

  • Van der Waals surface — A van der Waals surface. Coloured according to charge, superimposed on a ball and stick model of the hydrogen sulfide molecule Van der Waals surface area (abbreviated variously as vdWSA[citation needed …   Wikipedia

  • conical surface — A surface extending from the periphery of the horizontal surface outward and upward at a slope of 20 horizontal to 1 vertical for a horizontal distance of 4000 ft. It is an imaginary surface, in which any object that projects above the surface is …   Aviation dictionary

  • pitch surface — (in a gear or rack) an imaginary surface forming a plane (pitch plane), a cylinder (pitch cylinder), or a cone or frustrum (pitch cone) that moves tangentially to a similar surface in a meshing gear so that both surfaces travel at the same speed …   Universalium

  • piezometric surface —    1. The imaginary surface to which water from a given aquifer will rise under its full static head [10].    2. Defined by the elevation to which water will rise in artesian wells or wells penetrating confined aquifers [16].    See also… …   Lexicon of Cave and Karst Terminology

  • potentiometric surface —    An imaginary surface representing the total static head of ground water and defined by the level to which water will rise in a piezometer [22]. Replaces the term piezometric surface …   Lexicon of Cave and Karst Terminology

  • approach surface — An imaginary surface longitudinally centered on the extended centerline of the runway, beginning at the end of the primary surface and rising outward and upward to a specified height above the established airport elevation …   Aviation dictionary

  • inner horizontal surface — An imaginary surface located in the horizontal plane above an airport at a designated height above an established datum. See initial approach surface …   Aviation dictionary

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