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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 goods of Gaining Ground Farm can be found at the French Broad Food Co-op Tailgate Market on Wednesdays and Saturdays and at the North Asheville Tailgate Market (near UNCA) on Saturdays.
Hybrid technology is gaining ground in automotive front-end development because it realizes cost, weight, and space savings not possible when plastic or metal are used alone (see PT, July '02, p.
Share prices on the Tokyo Stock Exchange opened sharply higher Wednesday, with tech issues gaining ground on the back of a Wall Street rise and a quarterly profit reported by U.S.
Coater runnability from control of water retention and rheology of minerals is gaining ground. Calendering efficiency from easier to apply finishing is growing with the use of "platey" kaolins for coverage and fine kaolins for gloss.
Grocery items that retailers put their own name or brand on seem to be gaining ground with American consumers.
The 0% financing incentive push has pinned down a fragile Ford and a decimated DaimlerChrysler into a game of "catch-up." With Japanese and Korean OEMs gaining ground in GM's home market, the company has decided to grab market share while Ford and DaimlerChrysler experience severe financial difficulties.
Capacity is growing enormously at most companies each year and Storage Service Providers (SSPs) are gaining ground also.
But guys are fast gaining ground. For most males, the pressure isn't so much to be skinny as to look "pumped up." According to Charles Yesalis, a professor at Pennsylvania State University, this tempts some WWF.
Endless polls tell us who is gaining ground, and issue coverage is confined to discussions of who gains strategic advantage by the way disputes are parried or poses are struck.
Grocery stores appear to be gaining ground on convenience stores for the $1.6 billion sports drink market ACNielsen notes that while the convenience channel leads all other retail channels in sales of sports drinks during most of the year, the grocery channel leads during the summer months.
With the right-wing "Take Back Vermont" campaign gaining ground, Dean faces a backlash from state conservatives.
To put these summer movies in full ecological perspective, consider the "overkill hypothesis" that's been gaining ground among archeologists and paleobiologists.