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
Which fonms was the basis for photography?
Which fonms was the basis for photography?
admin
2012-05-04
43
问题
Which fonms was the basis for photography?
The camera is often thought to be a modern invention. But as early as 1727, a German physicist discovered that light darkened silver salt , a chemical compound. Using as a camera, a big box with a small hole to let the light in, he made temporary images on the salt. Silver salt is still the base of film today. Then a French scientist made the first permanent picture by using a special piece of metal sensitized with silver salt. A photography he made in 1826 still exists. The painter Dagear improved on the process by placing common salt, the kind we eat, on the metal. This was in 1839, the official date of the beginning of photography". But the problem was the printing of the photographs. And it wasn’t until other scientists developed the kind of paper we now use that good printing was possible and photography became truly modern. In 1860’s Matthew Brady was able to take his famous pictures of the American Civil War, thus making portrait poses very popular. In the 20th century, George Eastmen of the United States simplified film developing, and Edwards Land invented the so-called instant camera with self-developing film. If we say that the photography came into existence in 1839, it follows that it has taken more than one hundred years for the cameras to reach its present condition of technical refinement.
选项
A、A new kind of film.
B、An automatic printer.
C、A cheap device of developing film at home.
D、An "instant" camera that develops its own film.
答案
D
解析
细节题。Edwards Land发明了自显影胶片。此句的考点位于并列句连词and之后。
转载请注明原文地址:https://kaotiyun.com/show/EGmK777K
0
专业英语四级
相关试题推荐
Weaskedrespondentstoranktheserviceareasfrom1to9inorderofoverallimportance(withlbeingthehighestpriorityand
Nord’sNet:"WaysofKnowing"fortheScienceClassroomitisapparentthatProfessorWarrenA.NordhasfoundEddington’s
Whoisthecaller?
TheInternetTheInternetisalreadythegreatestequalizerofalltimeandcanonlybecomemoreso.Whileitmaynevermat
Whatistheprobablerelationshipbetweenthemanandthewoman?
Theconversationmostprobablytakesplacebetween
Theeffectofthebabyboomontheschoolshelpedtomakepossibleashiftinthinkingabouttheroleofpubliceducationinthe
Atpresentpeoplebecomemorecautiouswhenmeetstrangersletalonetohelpthem.Trustbetweenpersonsisatstake.Offeryour
______everythingtakingintoconsideration,thesolutionofferedbythedeanisrelativelyfeasible.
Weallscreamforwater【C1】______thirsty.Butdoyouknowinveryhot,dryweather,plantsalsomakefaintsounds—【C2】______the
随机试题
源结点与目标结点之间采用交换技术实现其连接。通常有三种交换方式:电路交换、( )、包交换。
发文字号中的机关代字应统一编定,负责编排发文机关和机关内各组织单位代字的是()
福氏完全佐剂的组成包括A.石蜡油、羊毛脂、卡介苗B.石蜡油、氢氧化铝、卡介苗C.羊毛脂、卡介苗、氢氧化铝D.石蜡油、卡介苗、磷酸铝E.石蜡油、羊毛脂、磷酸铝
制作矫治器不常使用的是A.点焊机B.持针器C.铸造机D.带环推子E.蜡刀
生活垃圾填埋场场址的位置及与周围人群的距离(),并经地方环境保护行政主管部门批准。
三位高中生赵、钱、孙和三位初中生张、王、李参加一个课外学习小组。可选修的课程有:文学、经济、历史和物理。赵选修的是文学或经济。王选修物理。已知:如果一门课程没有任何一位高中生选修,那么任何一位初中生也不能选修该课程。如果一门课程没有任何一位初中生选修,
WhentheislandsoftheWestIndies______amatterofdebateamongarchaeologists.
"Itisbettertogivethantoreceive.";"BewareofGreeks(ancient,ofcourse)bearinggifts."Giftsareafundamentalelement
A、ShehasdecidednottogotoAustralia.B、Shehasn’tmadeadecisionwhattodo.C、HerfriendjustreturnedfromAustralia.D、
A、Thetrafficjamistheonlyreasonforthewoman’sbeinglate.B、Thewomanshouldn’tliveinherhouseanymore.C、Thewomans
最新回复
(
0
)