VF

VF is an initialism used in several different domains, so its meaning depends on context. This article outlines a few of the most common uses in science, mathematics, computing, and business.

View factor, in radiative heat transfer and related fields, is a geometric quantity that describes the fraction of radiation emitted by one surface that directly reaches another surface. It depends on the shapes, relative positions, orientations, distances, and emissive properties of the surfaces involved. View factors are foundational for calculating net radiative exchange in enclosures and are used in engineering analyses of thermal insulation, furnaces, and solar collectors.

Vector field is a mathematical concept that assigns a vector to every point in a space, representing quantities such as velocity, force, or magnetic and electric fields. Vector fields are central to physics, engineering, and differential geometry, providing a way to describe how a quantity varies in space and to formulate laws of motion and field equations.

Virtual function is a programming concept in object-oriented languages. A virtual function is a member that can be overridden in derived classes, enabling dynamic dispatch so the appropriate function is called based on an object's runtime type. This mechanism supports polymorphism and is a core feature in languages such as C++. Some documentation and discussions use the abbreviation VF for virtual function.

Visual FoxPro, commonly abbreviated as Visual FoxPro or VFP, is a data-centric programming language and relational DBMS developed by Microsoft for Windows desktop applications. It integrates a programming environment with a relational database and graphical user interface. Visual FoxPro is discontinued, with official support ended years after its final release, and it remains in use mainly in legacy systems.

VF Corporation is an American multinational apparel and footwear company known simply as VF. The corporation owns and manages multiple brands, including Vans, The North Face, Timberland, and Dickies, and operates as a parent company under the VF umbrella.