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ground

 [grownd]
1. a path of conduction from an electrical circuit to the earth.
2. to connect an electrical circuit or electrical equipment to the earth.
3. zero electrical potential.

ground

Etymology: AS, grund
1 (in electricity) a connection between the electric circuit and the ground, which becomes a part of the circuit.
2 (in psychology) the background of a visual field that can enhance or inhibit the ability of a patient to focus on an object.

ground

1. Basic substance or foundation.
2. Reduced to a powder; pulverized.
3. In electronics, the negative or earth pole that has zero electrical potential.

figure

A part or pattern in the visual field which has the perceptual attribute of completeness and is perceived as distinct from the rest of the field which forms the ground. Example: a printed word against a background page.
ambiguous figure An image or drawing arranged in such a way that its perception oscillates or flips involuntarily between, usually, two interpretations even though the retinal image remains constant, thus indicating that higher cortical processing are involved. Syn. reversible figure. See Blivet figure; Kanizsa figure; illusion; Necker cube; Rubin's vase; Schroeder's staircase.
Blivet figure An 'impossible' figure in which three apparently solid tubes are attached at one end of a rectangular base which projects only two bars (Fig. F4). See Necker cube; Schroeder's staircase; Rubin's vase.
fortification figure See scintillating scotoma.
Kanizsa figure An ambiguous figure in which the illusory contour of a square (or triangle) appears in the middle of four (or three) truncated solid squares (or circles). It is an illustration of the perceptual ability to make sense of an incomplete figure by creating a 'whole' image from the separate elements (Gestalt organization). Some people cannot perceive the contour. Syn. Kanizsa square (Fig. F5).reversible f. See ambiguous figure.
Fig. F4 Blivet figureenlarge picture
Fig. F4 Blivet figure
Fig. F5 Kanisza figureenlarge picture
Fig. F5 Kanisza figure
References in periodicals archive ?
Groundwork Coffee's Colombia AMUCC Organic Coffee is a light roast with notes of tangerine, redcurrant, milk chocolate, green apple, and clover honey.
Come our beautiful "As deliverers of the region's museums development programme we are pleased that Groundwork STAN are committed to reopening Bede's World and maintaining access for the public to this significant collection and 98a heritage site.
In 'Problems with Freedom: Kant's Argument in Groundwork III and its Subsequent Emendation' (Chapter 10), Guyer reads Kant as trying to prove that we are free qua noumena, and as invoking transcendental idealism to make a positive, metaphysical assertion about the noumenal self.
Joint working between the community, nearby schools, Medway Council and Groundwork helped inform the design of the new play area.
According to GroundWork its software unifies proven open source projects, enabling enterprise-class IT management software to be delivered at a significantly lower cost than proprietary solutions, such as HP OpenView.
The company has also introduced GroundWork Factory, which will use GroundWork Monitor Professional's IT Management SOA to provide services for service level management, along with a repository of profiles, reports, dashboards and integration best practices.
The local branch of Groundwork - Birmingham & Solihull - continues to work side by side with the communities of Birmingham from their main offices in Handsworth.
Groundwork St Helens, Knowsley, Sefton and Liverpool want to transform an unsightly space next to Bryer Road community and youth centre in Prescot.
A scheme called Motiv8, developed by Groundwork Black Country, will see staff from the organisation trying to remotivate youngsters to learn.
They are: "The Argument of Kant's Groundwork, Chapter 1" by Nelson Potter, "Kant's Analysis of Obligation: The Argument of Groundwork I" by Christine M.