首页
登录
职称英语
[originaltext] The camera is often thought to be a modern invention. But as
[originaltext] The camera is often thought to be a modern invention. But as
游客
2024-05-07
25
管理
问题
The camera is often thought to be a modern invention. But as early as 1727, a German physicist discovered that light darkens silver salt, a chemical compound. Using as a camera, a big box with small hole to let the tight 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 treated with silver salt. A photograph he made in 1826 still exists. A painter improved on the process by placing common salt the kind we eat on the meal. 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. The good printing was possible and photography becomes truly modern.
In the 20th century, a man from the United States simplified film developing, and another American invented the so-called "instant" camera with serf-developing film. If we say that 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、1839.
C、1823.
D、1860.
答案
B
解析
What does the speaker regard as the official date of the beginning of photography?
转载请注明原文地址:https://tihaiku.com/zcyy/3587475.html
相关试题推荐
[originaltext]ItwasagloriousdaywhenSteveDobsonrealizedthemountain
[originaltext]ItwasagloriousdaywhenSteveDobsonrealizedthemountain
[originaltext]Therearethreekindsofgoals,short-term,medium-rangeand
[originaltext](35)Doyouknowhowtoadvertiseforabank?Ifyouaskpeopl
[originaltext](35)Doyouknowhowtoadvertiseforabank?Ifyouaskpeopl
[originaltext]W:Whatdidyouthinkoftheexams,Pete?Ireckontheyweredead
[originaltext]M:Hello.HowcanIhelpyou?W:I’dliketorentacarforsome
[originaltext]M:Now,whatseemstobethetrouble,Mrs.Stephens?W:I’vebeen
[originaltext]M:Now,whatseemstobethetrouble,Mrs.Stephens?W:I’vebeen
[originaltext]M:Now,whatseemstobethetrouble,Mrs.Stephens?W:I’vebeen
随机试题
Accordingtothenews,UEFA[originaltext]ThePresidentoffootball’sworld
Whywork?【C1】______youhaveperiodicallyaskedyourselfthesamequestion,
EatingOurYoung[A]AtFeltonvilleSchoolofArtsa
AsEnglishSpreads,IndonesiansFearforTheirLanguagePauli
45岁,阴道细胞学检查为巴氏Ⅱ级,宫颈活检为鳞状上皮化生,提示A.宫颈癌 B.
A.浮脉 B.芤脉 C.革脉 D.虚脉 E.散脉浮大中空,如按葱管的脉象
在龙口建造浮桥,沿龙口前沿抛投块料,使堆筑戗堤均匀上升的是( )。 A、平堵
从2008年3月1日起,对个人出租住房征收增值税的税率是()。(2011年真
矿山建设工程中,决定地面生产系统布局和影响施工设施布局的主要是()。A.施工方
下列能够发挥蛋白质互补作用的最佳搭配是A.小米和大米 B.花生和大豆 C.玉
最新回复
(
0
)