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单词 contrast disc
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contrast disc
5. (a) Psychology. The modification or intensification of a sensation by the juxtaposition of another (frequently opposite) sensation. (b) spec. The reciprocal induction of colours, brightnesses, and shapes when brought into juxtaposition; the modification of the apparent colour, brightness, or shape of an object by the presence of another colour, brightness, or shape nearby; (see quots.). Also attributive, as contrast disc, one used with a colour-mixer to exhibit the phenomena of contrast.
ΘΚΠ
the mind > mental capacity > psychology > psychology of perception > process of perception > [noun] > modification of sensation
contrast1873
the world > physical sensation > sight and vision > thing seen > appearance or aspect > [noun] > seeming > of colour or shape when juxtaposed with another
contrast1873
the world > physical sensation > sight and vision > thing seen > appearance or aspect > [adjective] > seeming or apparent > of colours > of colour or shape when juxtaposed with another
contrast1873
1873 P. H. Pye-Smith tr. H. von Helmholtz in E. Atkinson et al. tr. H. von Helmholtz Pop. Lect. Sci. Subj. vi. 267 This is proved by a number of experiments contrived to illustrate the effects of contrast.
1873 P. H. Pye-Smith tr. H. von Helmholtz in E. Atkinson et al. tr. H. von Helmholtz Pop. Lect. Sci. Subj. vi. 267 When, for example, objects are seen under two different coloured media..these conditions produce what is called simultaneous contrast.
1873 P. H. Pye-Smith tr. H. von Helmholtz in E. Atkinson et al. tr. H. von Helmholtz Pop. Lect. Sci. Subj. vi. 267 This effect is known as successive contrast, and is experienced when the eye passes over a series of coloured objects.
1890 E. B. Delabarre in W. James Princ. Psychol. II. xvii. 13 The phenomena of contrast.
1890 E. B. Delabarre in W. James Princ. Psychol. II. xvii. 13 If we look for a moment at any surface and then turn our eyes elsewhere, the complementary color and opposite degree of brightness to that of the first surface tend to mingle themselves with the color and the brightness of the second. This is successive contrast.
1890 E. B. Delabarre in W. James Princ. Psychol. II. xvii. 14 A visual image is modified..by all those [sensations] experienced simultaneously with it... This is the phenomenon of simultaneous contrast.
1890 E. B. Delabarre in W. James Princ. Psychol. II. xvii. 21 The gray spot then assumes a contrast-color, complementary to that of the background.
1894 J. E. Creighton & E. B. Titchener tr. W. M. Wundt Lect. Human & Animal Psychol. vii. 114 The subjective colour due to this opposition..is also termed contrast colour.
1894 J. E. Creighton & E. B. Titchener tr. W. M. Wundt Lect. Human & Animal Psychol. vii. 114 To refer the phenomena of contrast to like causes with complementary after-images.
1897 C. H. Judd tr. W. M. Wundt Outl. Psychol. xxiii. 324 The law of psychical contrasts..refers..to the relations of psychical contents to one another.
1897 C. H. Judd tr. W. M. Wundt Outl. Psychol. xxiii. 325 This law of contrast has its origin in the attributes of the subjective contents of experience, but is secondarily applied to the ideas and their elements also.
a1899 D. G. Brinton Basis Social Relations (1902) 42 The third law, that of Contrast, applies to the ethnic mind the curious fact in mental life that a prolonged devotion to one idea leads to a reaction in which the opposite of that idea becomes dominant.
1901 E. B. Titchener Exper. Psychol. I. i. 19 The contrast disc, with an extra 30° of white or black in its ring, is set up before its appropriate background. The contrast colour is matched upon the second mixer as before. Note that the same grey background must be retained for the second mixer, in order that the contrast relations may remain the same on both discs.
1938 R. S. Woodworth Exper. Psychol. xxii. 567 Much more striking is the interaction known as contrast, including brightness contrast and color contrast.
1938 R. S. Woodworth Exper. Psychol. xxii. 567 Contrast between adjacent regions is called simultaneous contrast to distinguish it from the successive contrast resulting from retinal adaptation.
1957 Amer. Jrnl. Psychol. 70 iii. 358 Since we have demonstrated two types of reaction to a shift in context, i.e. contrast and assimilation, the question arises as to whether or not this loss in discrimination is specific to either contrast or assimilation.
1958 H. Helson in D. C. Beardslee & M. Wertheimer Readings in Perception 260 It has been denied that contrast mechanisms could account for these effects.
1966 L. M. Hurvich & D. A. Jameson Perception of Brightness & Darkness v. 85 What the contrast mechanism seems to do in all these instances is to magnify the differences in apparent brightness between adjacent areas of different luminances.
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