首页
登录
职称英语
As one works with color in a practical or experimental way, one is impressed
As one works with color in a practical or experimental way, one is impressed
游客
2025-04-26
23
管理
问题
As one works with color in a practical or experimental way, one is impressed by two apparently unrelated facts. Color as seen is a mobile changeable thing depending to a large extent on the relationship of the color to other colores seen simultaneously. It is not fixed in its relation to the direct stimulus which creates it. On the other hand, the properties of surfaces that give rise to color do not seem to change greatly under a wide variety of illumination colors, usually (but not always) looking much the same in artificial light as in daylight. Both of these effects seem to the due in large part to the mechanism of color adaptation mentioned earlier.
When the eye is fixed on a colored area, there is an immediate readjustment of the sensitivity of the eye to color in and around the area viewed. This readjustment does not immediately affect the color seen but usually does affect the next area to which the gaze is shifted. The longer the time of viewing, the higher the intensity, and the larger the area, the greater the effect will be in terms of its persistence in the succeeding viewing situation. As indicated by the work of Wright and Schouten, it appears that, at least for a first approximation, full adaptation takes place over a very brief time if the adapting source is moderately bright and the eye has been in relative darkness just previously. As the stimulus is allowed to act, however, the effect, becomes more persistent in the sense that it takes the eye longer to regain its sensitivity to lower intensities. The net result is that, if the eye is so exposed and then the gaze is transferred to an area of lower intensity, the loss of sensitivity produced by the first area will still be present and appear as an "afterimage" super imposed on the second. The effect not only is present over the actual area causing the "local adaptation" but also spreads with decreasing strength to adjoining areas of the eye to produce "lateral adaptation". Also, because of the persistence of the effect if the eye is shifted around from one object to another, all of which are at similar brightnesses or have similar colors, the adaptation will tend to become uniform over the whole eye. [br] The present selection has apparently been preceded by some explanation of ______.
选项
A、some experiments with color pigments
B、the nature of color
C、the color properties of various surfaces
D、the mechanism of eye’s adaptation to color
答案
D
解析
根据第1段Both of these effects seem to the due in large part to the mechanism of color adaptation mentioned earlier,可以判断本文之前讲述的是the mechanism of color adaptation。
转载请注明原文地址:https://tihaiku.com/zcyy/4053966.html
相关试题推荐
Asoneworkswithcolorinapracticalorexperimentalway,oneisimpressed
Asoneworkswithcolorinapracticalorexperimentalway,oneisimpressed
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Allofuswereimpressedbyher______complexion.A、fluffyB、floralC、floridD、f
Guthrie’scontiguityprincipleofferspracticalsuggestionsforhowtobreak
随机试题
Takingondebtisoneofthemostimportanteconomicdecisionsapersoncan
[originaltext](5)A16-year-oldaskedastrangeratagrocerystoretobuy
正常成人声带完全外展时的声门宽度是A.7mm B.10mm C.19mm
确诊胃肠道穿孔最主要的诊断依据是()A.腹部触痛 B.腹部疼痛 C.胸腹透视
(共用题干)患者男,25岁。因突然畏寒、高热伴右胸部疼痛1天入院。查体:T:39
某女,36岁。入睡困难,睡后易醒,心悸健忘,腹胀便溏,神疲食少,四肢倦怠,舌淡苔
下列战略联盟形式中,属于契约式战略联盟的有()。A.合资企业 B.产品联盟
下面关于后张法预制梁板说法错误的是()。A.台座用表面压光的梁(板)筑成,应坚
下列关于自立式土墙结构特点的说法,错误的是()。A.由拉杆、挡板、立柱、锚锭块
A.肾病综合征对激素高度敏感 B.肾病综合征对激素敏感 C.肾病综合征对激素
最新回复
(
0
)