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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 ?
However, this is likely to take a fair amount of nutrients from your soil, so work in plenty of organic matter when preparing the ground and also after clearing one crop to make way for another.
In Wadi Qana the farmers will be preparing the ground to plant olive trees which will be partly funded by PARC the Palestinian Agricultural Council.
In a statement, Ms Harman said: "I am not preparing the ground for a leadership election.
THE NEWLY renamed European Medicines Agency (EMA) has launched asked for comments on a 'road map to 2010: preparing the ground for the future'.
4Fill in any bare areas by preparing the ground and sowing hardy annuals.
Contractors are preparing the ground ready for building work to start later this year on land off Allard Way in Ernesford Grange, Coventry.
Even if she is preparing the ground, Feinstein might end up staying where she is.
Combined with his Banking expertise and securities market credibility, his institutional contacts in Chicago, New York and London, and with Torbay's commitment to the best fiduciary and fiscal practices, we are preparing the ground and establishing the Board's credibility so as to be attractive to an institutional investment base, beyond that which is attracted to a Bulletin Board stock, presently.
Mid-September to mid-October is a good time to plant evergreen bushes, so start preparing the ground now.
During the phone talk with his Swedish counterpart on Friday, Salehi expressed the hope that the opposite party to the upcoming talks in Istanbul, Turkey, would reciprocate "Tehran's good will and constructive initiatives with preparing the ground for successful and progressive negotiations through positive stances".

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