drag stress

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• stress, effective —    Stress (pressure) that is borne by and transmitted through the grain to grain contacts of a deposit, and thus affects its porosity or void ratio and other physical properties. In onedimensional compression, effective stress is the average… …   Lexicon of Cave and Karst Terminology

• Drag-and-drop — In computer graphical user interfaces, drag and drop is the action of (or support for the action of) selecting a virtual object by grabbing it and dragging it to a different location or onto another virtual object. In general, it can be used to… …   Wikipedia

• drag — i. That component of aerodynamic forces acting on the wing or the airfoil section, which is parallel and opposite to the relative airflow. The sources of drag are the pressure distribution patterns over the airfoil, called induced drag; the skin… …   Aviation dictionary

• Aerodynamic drag — Note This article is currently under renovation, and may, at times, appear disjoint. Please see the [http://en.wikipedia.org/wiki/Talk:Aerodynamic drag Discussion Page] . Introduction Aerodynamic drag refers to the retarding force on moving… …   Wikipedia

• Shear stress — SI symbol: τ SI unit: pascal Derivations from other quantities: τ = F / A …   Wikipedia

• Portevin–Le Chatelier effect — The Portevin–Le Chatelier effect describes a serrated stress strain curve, which some materiels exhibit as they undergo plastic deformation.This effect occurs, when solute atoms (e.g C in steels) have sufficient mobility and thus can segregate at …   Wikipedia

• fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… …   Universalium

• Friction — For other uses, see Friction (disambiguation). Classical mechanics …   Wikipedia

• Gravity turn — A gravity turn or zero lift turn is a maneuver (see trajectory optimization) used in launching a spacecraft into, or descending from, an orbit around a celestial body such as a planet or a moon. This launch trajectory offers two main advantages… …   Wikipedia

• Force — For other uses, see Force (disambiguation). See also: Forcing (disambiguation) Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate …   Wikipedia

• Boundary layer — For the anatomical structure, see Boundary layer of uterus. Boundary layer visualization, showing transition from laminar to turbulent condition In physics and fluid mechanics, a boundary layer is that layer of fluid in the immediate vicinity of… …   Wikipedia