contrast

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contrast

1. (in painting) the effect of the juxtaposition of different colours, tones, etc.
2. 
a. (of a photographic emulsion) the degree of density measured against exposure used
b. the extent to which adjacent areas of an optical image, esp on a television screen or in a photographic negative or print, differ in brightness
3. Psychol the phenomenon that when two different but related stimuli are presented close together in space and/or time they are perceived as being more different than they really are

Contrast

A juxtaposition of dissimilar elements to show the differences of form or color, or to set in opposition in order to emphasize the differences.

Contrast

 

in psychology, the subjective exaggeration of the differences between perceived objects or between certain sectors of the visual field during their spatial (simultaneous contrast) or temporal (successive contrast) contiguity. Thus, when the color black is placed next to white it seems even blacker. Contrast may also be manifested in color change. For example, a gray square on a red background seems greenish blue; on a blue background it looks orange. The sharpest contrast of two colors is expressed at the boundary of the two areas (boundary contrast). The phenomenon of assimilation is the opposite of contrast. Contrast is widely used in various forms of art and literature.

REFERENCES

Vudvorts, R. Eksperimental’naia psikhologiia. Moscow, 1950.
Teplov, B. M. “Vzaimodeistvie odnovremennykh svetovykh oschchushchenii.” In Zritel’nye oshchushcheniia i vospriiatiia. Moscow-Leningrad, 1935.

contrast

[′kän‚trast]
(communications)
The degree of difference in tone between the lightest and darkest areas in a television or facsimile picture.
(computer science)
In optical character recognition, the difference in color, reflectance, or shading between two areas of a surface, for example,a character and its background.

contrast

The white level of a display screen. The contrast adjusts how bright the white is. See brightness and contrast ratio.
References in periodicals archive ?
As a result, perhaps without their conscious awareness, they gave contrastive responses in the interpretation of fish behavior (more dispositional inferences, a tendency contrastive of Chinese culture's inclination toward more situational inferences).
Let's state this in the language of contrastive and noncontrastive reasons: If I say that displaying the painting for our guests is a reason to hang it over the fireplace, without contrasting any specific alternative (except not doing so), then this would be a good noncontrastive reason for doing this.
The researchers also suggested that the level of language proficiency of students and the nature and type of language instruction provided to them should be considered when contrastive rhetorical analysis is conducted.
This contrastive analysis illustrates that the range of errors vary widely among the compiled texts.
257 he states that "Unlike Kiss (1998), we would like to claim that contrastive focus can also be represented by non-cleft instances like (7)
The vowels that are contrastive in Shona are: /i, e, a, o, u/.
Contrastive Analysis (CA) proposes to carry out a contrast between the system of the SL or L1 and the TL or L2 so as to identify structural divergences which are likely to militate against and impede the smooth acquisition of the SL/FL.
This paper focuses on the assessment of oral performance in role-plays in two contrastive groups: the first is composed of students trained in integrative teaching, whereas the second is formed by students who have attended a course targeted to communicative English.
I assume that this restriction need not be stipulated explicitly but follows from the general prohibition against elision of contrastive expressions in gapping: Although the two referring expressions (here: Wh-phrases) are identical, non-coreferentiality is presupposed.
In addition, I was offered a summary of Kaplan's contrastive rhetoric as a theoretical basis for these techniques: different cultures employ different patterns of linguistic expression, so we must help students recognize the difference between their patterns and ours.
It is perhaps easier to answer this question through what philosophers call contrastive definition: depletist, or anti-green, technology is any that works by means of net resource loss.
It offers clinicians and clinical researchers a variety of versatile, flexible speech materials organized into chapters on automatic speech tasks, consonants, vowels and diphthongs, word grids, common expressions, figurative expressions, speaking with exaggerated articulatory movements, dialogues, and contrastive stress drills.