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
自考
There are two ways to create colors in a photograph. One method, called additive, starts with three basic colors and adds them t
There are two ways to create colors in a photograph. One method, called additive, starts with three basic colors and adds them t
admin
2022-08-24
21
问题
There are two ways to create colors in a photograph. One method, called additive, starts with three basic colors and adds them together to produce some other color. The second method, called subtractive, starts with white light(a mixture of all colors in the spectrum)and, by taking away some or all other colors, leaves the one desired. In the additive method, separate colored lights combine to produce various other colors. The three additive primary colors are green, red, and blue(each providing about one third of the wavelengths in the total spectrum). Mixed in varying proportions, they can produce all colors. Green and red light mix to produce yellow; red and blue light mix to produce magenta; green and blue mix to produce cyan. When equal parts of all three of these primary-colored beams of light overlap, the mixture appears white to the eye. In the subtractive process, colors are produced when dye(as in paint or color photographic materials)absorbs some wavelengths and so passes on only part of the spectrum. The subtractive primaries are cyan(a bluish green), magenta(a purplish pink), and yellow. These are the pigments or dyes that absorb red, green, and blue wavelengths, respectively, thus subtracting them from white light. These dye colors are the complementary colors to the three additive primaries of red, green, and blue. Properly combined , the subtractive primaries can absorb all colors of light, producing black. But, mixed in varying proportions, they too can produce any color in the spectrum. Whether a particular color is obtained by adding colored lights together or by subtracting some light from the total spectrum, the result looks the same to the eye. The additive process was employed for early color photography. But the subtractive method, while requiring complex chemical techniques, has turned out to be more practical and is the basis of all modern color films.
Which of the following is not a pair of additive and subtractive primary colors?
选项
A、Yellow and blue.
B、Magenta and green.
C、Black and white.
D、Cyan and red.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/qxPR777K
本试题收录于:
电子商务英语题库经管类分类
0
电子商务英语
经管类
相关试题推荐
Koalaslookliketeddybears,【C1】______theyarenotbearsatall.Theyarereallyanimalscalledmarsupials.Theseanimalsc
Koalaslookliketeddybears,【C1】______theyarenotbearsatall.Theyarereallyanimalscalledmarsupials.Theseanimalsc
【T1】OverthelastfewyearstheInternethasevolvedfrombeingascientificnetworkonly,toaplatformthatisenablinganew
Searchingbykeywordisthemostcommonmethodofusingasearchengine,buttheproblemwithkeywordsistherelativelyimpreci
Searchingbykeywordisthemostcommonmethodofusingasearchengine,buttheproblemwithkeywordsistherelativelyimpreci
Peopleovertheageof65intheU.S.Aarecalledseniorcitizens.LifeforthesepeopleisdifferentfromthatforyoungerAm
Thedifferencesinrelativegrowthofvariousareasofscientificresearchhaveseveralcauses.【T1】Someofthesecausesarecomp
Therearetwowaystocreatecolorsinaphotograph.Onemethod,calledadditive,startswiththreebasiccolorsandaddsthemt
Oceanographyhasbeendefinedas"Theapplicationofallsciencestothestudyofthesea".Beforethenineteenthcenturysc
随机试题
木瓜的功效有哪些?
A.支原体B.猪链球菌2型C.副猪嗜血杆菌D.多杀性巴氏杆菌E.胸膜肺炎放线杆菌能致猪呼吸道症状,cAMP试验阳性的是()
决定牙尖数目的多少是
下列各选项中,不符合《物权法》规定的是()。
地铁车站通常由()等部分组成。
目前计算机最主要的应用领域是( )。
根据《企业破产法》的规定,下列关于管理人的表述中,不正确的是()。
秦初封建和郡县之争
【五军都督府】中国社会科学院研究生院201.5年中国古代史真题
布雷顿森林体系实际上是一种国际金汇兑本位制。()
最新回复
(
0
)