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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

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 ?
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.
Contract notice: preparing the ground with a disc frame and mechanized forest sowing in the 2019-2022 southwestern area
? 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".
After preparing the ground the group planted more than 50 plants which were mainly shrubs, such as silver birch, dogwood, witchhazel and honeysuckle.
TAKING A BREAK: From left, Sean May, Owen Highmoor and Chris Clarke relax on one of the benches at the St Andrew's site HOME-GROWN TALENT: Owen Highmoor, two, lends a hand SEEDS OF SUCCESS: From left, Sean May, Owen Highmoor, two, Fiona Clarke, Bobbie Harding and Chris Clarke plan to grow their own fruit at St Andrew's DIGGING IN: Fiona Clarke, left, and Bobbie Harding preparing the ground
Following the formation of the new Palestinian national unity government, the EU is awaiting action by the new leaders before waiving its embargo on the Palestinian Authority, while preparing the ground for a resumption of direct aid.
Dear Editor, - When this G8 comes to be looked back upon, it will be wondered why the UK government had not been preparing the ground to have properly brought some new member countries to the G8 top-table under their UK presidency.
Children evacuated from Liverpool to North Wales in 1940 aid the war effort by preparing the ground for crops

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