Definition of virtual. Meaning of virtual. Synonyms of virtual

Here you will find one or more explanations in English for the word virtual. Also in the bottom left of the page several parts of wikipedia pages related to the word virtual and, of course, virtual synonyms and on the right images related to the word virtual.

Definition of virtual

Virtual
Virtual Vir"tu*al (?; 135), a. [Cf. F. virtuel. See Virtue.] 1. Having the power of acting or of invisible efficacy without the agency of the material or sensible part; potential; energizing. Heat and cold have a virtual transition, without communication of substance. --Bacon. Every kind that lives, Fomented by his virtual power, and warmed. --Milton. 2. Being in essence or effect, not in fact; as, the virtual presence of a man in his agent or substitute. A thing has a virtual existence when it has all the conditions necessary to its actual existence. --Fleming. To mask by slight differences in the manners a virtual identity in the substance. --De Quincey. Principle of virtual velocities (Mech.), the law that when several forces are in equilibrium, the algebraic sum of their virtual moments is equal to zero. Virtual focus (Opt.), the point from which rays, having been rendered divergent by reflection of refraction, appear to issue; the point at which converging rays would meet if not reflected or refracted before they reach it. Virtual image. (Optics) See under Image. Virtual moment (of a force) (Mech.), the product of the intensity of the force multiplied by the virtual velocity of its point of application; -- sometimes called virtual work. Virtual velocity (Mech.), a minute hypothetical displacement, assumed in analysis to facilitate the investigation of statical problems. With respect to any given force of a number of forces holding a material system in equilibrium, it is the projection, upon the direction of the force, of a line joining its point of application with a new position of that point indefinitely near to the first, to which the point is conceived to have been moved, without disturbing the equilibrium of the system, or the connections of its parts with each other. Strictly speaking, it is not a velocity but a length. Virtual work. (Mech.) See Virtual moment, above.

Meaning of virtual from wikipedia

- virtual may refer to: virtuality , the quality of having the attributes of something without sharing its (real or imagined) physical form
- virtual reality (vr) is a term that applies to computer-simulated environments that can simulate physical presence in places in the real
- private european dvb extensions such as nordig or nds also known as a virtual channel as used in atsc si metadata, for atsc is a channel
- a virtual machine (vm) is a software implemented abstraction of the underlying hardware , which is presented to the application layer of
- the term virtual is a concept applied in many fields with somewhat differing connotations, and also, differing denotations. virtual is
- a virtual world is an online community that takes the form of a computer-based simulated environment through which users can interact
- in computing , virtual memory is a memory management technique developed for multitasking kernels . this technique virtualizes the main
- in physics , a virtual particle is a transient fluctuation that exhibits many of the characteristics of an ordinary particle, but that
- a virtual community is a social network of individuals who interact through specific social media , potentially crossing geographical and
- a virtual museum is a museum that exists only online . a virtual museum is also known as an online museum, electronic museum, hypermuseum