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
51
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
Areorganicallygrownfoodsthebestfoodchoices?Theadvantagesclaimedfor
建设单位、设计单位、施工单位、工程监理单位违反国家规定、降低工程质量标准,造成重
预包装食品的包装上使用的标签应当标明的事项中,可以含有以下()等。A.名称、规格
大建中汤的组成药物是A.生附子、干姜、肉桂、炙甘草 B.蜀椒、人参、干姜、饴糖
衍品类证券产品包括()。 Ⅰ.金融期权 Ⅱ.金融期货 Ⅲ.金融远期合
血清铁增高见于A、再生障碍性贫血B、缺铁性贫血C、恶性肿瘤D、急性感染E
A.有效性 B.安全性 C.稳定性 D.均一性 E.有效性和安全性在规定
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
美国行为主义心理学家华生认为,人的发展完全是由环境决定的。这是一种()。 A
下列关于本票的表述中,符合票据法律制度规定的有()。A.本票为见票即付的票据
最新回复
(
0
)