首页
登录
职称英语
Which fonms was the basis for photography? [br] [originaltext] The camera is
Which fonms was the basis for photography? [br] [originaltext] The camera is
游客
2023-11-16
39
管理
问题
Which fonms was the basis for photography? [br]
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://tihaiku.com/zcyy/3191911.html
相关试题推荐
Accordingtothenews,thevictimwas______.[originaltext]FourAmericante
WhatisNOTmissinginMary’sbriefcase?[br][originaltext]W:Sorry,I’mlate,
Whereisthepresenceofsecuritypatrolsmostevident?[br][originaltext]
TheRussiancargoshipwassinking.Whatwasthedirectcause?[originaltext]
Wherewerethetwomenfilmed?[br][originaltext]Thepolicereleasedthef
Wherewerethetwomenfilmed?[br][originaltext]Thepolicereleasedthef
WhatisJiminterestedin?[br][originaltext](M=Jim,F=Linda)M:Hello,Li
WhatisJiminterestedin?[br][originaltext](M=Jim,F=Linda)M:Hello,Li
JohnhasworkedinallofthefollowingplacesEXCEPT______.[br][originaltext
JohnhasworkedinallofthefollowingplacesEXCEPT______.[originaltext](M=
随机试题
HistoryofweatherforecastingEarlymethodsAlmanacsconnectedthewe
[originaltext]W:Dad!I’mwonderingifIshouldbuyapairoftennisshoes.I’m
企业标准体系中标准,上下、左右的关系要理顺,上下层是从属关系,下层标准要服从上层
新生儿脐炎不出现下列哪一表现A.脐部红肿、疼痛 B.形成腹壁蜂窝织炎 C.可
(2020年真题)甲企业20×8年度财务报告批准报出日为20×9年2月28日。2
患儿,4个月,轻咳,惊厥4次,发作后一般情况好,查体:T37.8℃,枕部压之乒乓
设L是连接点A(1,0)及点B(0,1)的直线段,则对弧长的曲线积分∫L(y-x
基金销售过程的适用性原则要求,基金销售机构应遵循()。 A.投资人利益优先
根据《建设工程工程量清单计价规范》GB50500-2013,因业主方提出的程变
计算企业一定时期营业利润时,应从当期营业收入中扣除的项目有()。A、营业成本
最新回复
(
0
)