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>This article is about the leaf, a plant organ. See Leaf (disambiguation) for other meanings. In botany, a leaf is an above-ground plant organ specialized for photosynthesis. For this purpose, a leaf is typically flat (laminar) and thin, to expose the chloroplast containing cells (chlorenchyma tissue) to light over a broad area, and to allow light to penetrate fully into the tissues. Leaves are also the sites in most plants where respiration, transpiration, and guttation take place. Leaves can store food and water, and are modified in some plants for other purposes. The comparable structures of ferns are correctly referred to as fronds. See more at Wikipedia.org...

athematics">mathematics, the concept of a curve tries to capture the intuitive idea of a geometrical one-dimensional and continuous object. Simple examples are the circle or the straight line. A large number of other curves have been studied in geometry.This article is about the general theory. The term curve is also used in ways making it almost synonymous with mathematical function (as in learning curve), or graph of a function (Phillips curve). See more at Wikipedia.org...

ow has several different meanings:In fluid mechanics, the word flow is often used to mean a complete description of the motion of a fluid. See also rate of fluid flow.In mathematics, flow (mathematics) refers to the one-dimensional (continuous, differentiable) action of a group, usually arising in the solution of differential equations. Examples include geodesic flow, Hamiltonian flow and Anosov flow.In physics, flow is another name for "flux", which is the rate at which something flows through a given cross section ( SI units: mL/s).In circulatory physiology , the word flow (e.g. of blood or lymph fluid) is commonly used as shorthand for regional flow, i.e., flow standardised to the volume or mass of a region of tissue under study (SI units: mL/s/mL or mL/s/g). In psychology, flow is the feeling of complete and energized focus in an activity, with a high level of enjoyment and fulfillment as described by Mihaly Csikszentmihalyi.In economics and accounting, a flow is the total value of sales or purchases in an accounting period, usually a quarter or a year.In television, flow is a term used about how channels try to hold their audience by announcing the coming programs.Dataflow and workflow are terms used in computing.The notion of network flow is formalized in a branch of mathematics known as graph theory.FLOW is a J-Pop groupFlow is a US based manufacturer of proprietary snowboard bindings.In certain laboratory applications, flow, short for flow cytometry, is a technique for counting, examining and sorting microscopic particles suspended in a stream of fluid See more at Wikipedia.org...