首页
登录
职称英语
[originaltext] Today I will be talking about the invention of the camera and
[originaltext] Today I will be talking about the invention of the camera and
游客
2023-09-15
57
管理
问题
Today I will be talking about the invention of the camera and photography.
Camera is often thought to be a modern invention. But as early as 1727, a German physicist discovered light darkened silver salt, a chemical compound used 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 basic film today. Then a French scientist made the first permanent picture by using a special piece of metal sensitized with silver salt. A photograph photograph he made in 1826 still exists.
The painter DeGair 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 was not until other scientists developed the kind of paper we now use that good printing was possible, and photography became truly modern.
In the 1860’s, Mathew Brady was able to take his famous pictures of the American Civil War, thus making portrait poses very popular. In the 20th century, George Eastman of the United States simplified film developing, and Edwin Land invented the so-called instant camera with self-developing film.
If we say photography came into existence in 1839, it follows that it has taken more than 100 years for the camera to reach its present condition of technical refinement.
选项
A、1727.
B、1826.
C、1839.
D、1860.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3015519.html
相关试题推荐
[originaltext]Toooftenyoungpeoplegetthemselvesemployedquitebyaccid
[originaltext]Toooftenyoungpeoplegetthemselvesemployedquitebyaccid
[originaltext]M:Isthistableonthecomerokay?W:Sure.Wecansithere.M’
[originaltext]M:Isthistableonthecomerokay?W:Sure.Wecansithere.M’
[originaltext]M:Isthistableonthecomerokay?W:Sure.Wecansithere.M’
[originaltext]M:Ihavebeenstudyingtoomuchandneedachange.SoI’vejust
Toprotecthisnewinvention,______(我叔叔申请了专利).myuncletookoutapatentonit
[originaltext]TwobombsexplodedinAlgeriaTuesdayasaEuropeanUniontea
[originaltext]TwobombsexplodedinAlgeriaTuesdayasaEuropeanUniontea
[originaltext]Atbirth,theinfanthasonlythemostelementaryemotionall
随机试题
WhyImmersionTeachingWorksAsaCanadianimmersi
Itisanage-old【B1】______:MenarefromMars;WomenarefromVenus.Males
Whatispopculture?Well,popis【11】forpopular.Thebeginningofpopcultu
Sinceitsfoundingin1948,McDonald’shasgrownfromafamilyburger(汉堡包)
Thebasicdistinctionbetweenachievementandproficiencytestsistobefou
节点④的构造层最少有几层(不含屋面板,如有保护层与黏结层按一层计)?()
以下有关法院的审判权与当事人的处分权之间关系的理解中,说法正确的有哪些?A.对于
在调查某城市小学教师亚健康状况时,从该城市的200所小学中随机抽取40所,每个被
(2019年真题)下列资产负债表项目中,根据总账科目余额填列的有()。A.货币
如图5-22所示,三角形ABC,已知,z2轴//z1轴,则Iz1与Iz2。之间的
最新回复
(
0
)