首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The Eye’s Adaptation to Color As one works with color in a practical or experimental way; one is impressed by two apparently
The Eye’s Adaptation to Color As one works with color in a practical or experimental way; one is impressed by two apparently
admin
2013-12-28
84
问题
The Eye’s Adaptation to Color
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 colors 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 be 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 next result is that, if the eye is so exposed and then the gaze is transferred to an area of lower intensities, the loss of sensitivity produced by the first area will still be present and appear as an "afterimage" superimposed 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 brightness or have similar colors, the adaptation will tend to become uniform over the whole eye.
What does "lateral adaptation" mean?
选项
A、Side.
B、Subsequent.
C、Simultaneous.
D、Slow.
答案
A
解析
lateral是形容词,意为“周围的,侧面的”。
转载请注明原文地址:https://kaotiyun.com/show/fGQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
SeekHealthandWellness1Whetheryouarebusystudyingorstartingclerkship,itisabsolutelyessentialtomaintainhealthan
LoweringtheRiskofHeartDiseaseLikemillionsofotherAmericans,Icomefromafamilywithahistoryofheartdisease.My
Theoutlookfromthetopofthemountainisbreathtaking.
Intherecentpast,medicalresearchershaveshownthatheartdiseaseisassociatedwithcertainfactorsinourday-to-daylives
Intherecentpast,medicalresearchershaveshownthatheartdiseaseisassociatedwithcertainfactorsinourday-to-daylives
Throughouttheworldthereisashortageofhumanorgansfortransplants.InBritain,forexample,6000peoplearewaitingforo
PromisingResultsfromCancerStudyAnewexperimentalvaccine(疫苗)hasshownpromisingresultsinthefightagainstlungcanc
A.havehealingeffectsB.beusedexternallyC.bepromotedD.helpthedisabledE.befurtherexploredF.suitdifferentpeopl
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
Hewaspersuadedtogiveuptheidea.
随机试题
“天人合一”的观念起源于()
Afterhecomesback,heoiledmachine.Inabovesentence,whichwordisaconvertedword?Explainthetypeoftheconversionand
根据我国现行公司法的规定,公司的权利能力受到的限制有()
某中年男性患者。因双侧扁桃体反复感染伴化脓、发热到某医院就诊。医生考虑病情给他开了价格昂贵的新型抗生素,患者根据经济状况要求改用平时常用的较便宜而有效的清凉解毒中药或青霉素,对此案的伦理分析,哪项正确
A.跨阈步态B.划圈样步态C.剪刀状步态D.慌张步态E.醉汉步态痉挛性偏瘫的步态是
出卖人应当按照约定的地点交付标的物,当事人没有约定或约定不明确的,下列各项中正确的认定方式有()。
元认知策略包括计划策略、监控策略和_________。
下列各组中没有错别字的一组是()。
对苏联高度集中的体制的客观评价是()。①基本上适应苏联当时的生产力发展水平②这种体制有严重缺点和弊端③后来这种体制阻碍了苏联国民经济的发展④这种体制在历史上起过积极的作用
Accordingtoanewresearch,dreamingaboutsomethingyou’velearnedmayactuallybeanindicatorthatyourmemoryisworkingov
最新回复
(
0
)