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
2024-06-13
5
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、A quick process of developing film.
B、A new kind of film.
C、An automatic printer.
D、A kind of camera that develops its own film.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3631787.html
相关试题推荐
[originaltext]Pullingheavysuitcasesalldayinthesummerishardwork,es
[originaltext]Pullingheavysuitcasesalldayinthesummerishardwork,es
[originaltext]Ifyou’reinchargeofaproject,thekeytosuccessisgettin
[originaltext]W:Tony,Ijustmovedintomynewapartment,andIneedtohavet
[originaltext]W:HowwasyourtriptotheGrandCanyon?M:Itwasexcellent!We
[originaltext]W:HowwasyourtriptotheGrandCanyon?M:Itwasexcellent!We
[originaltext]ThisisRayMcCarthywiththenews.Reportsarecominginof
[originaltext]ThisisRayMcCarthywiththenews.Reportsarecominginof
[originaltext]Dr.AllenHershdesignssmellsforbusinesses.Hesaysthati
[originaltext]Dr.AllenHershdesignssmellsforbusinesses.Hesaysthati
随机试题
A、Sheisrecommendedbyanoldmember.B、Shewillsignupforoneyear.C、Thecl
下列属于我国飞机保险基本险的有()。A.飞机机身保险 B.飞机第三者责任保
在线知识服务流程包括()。A.产品生产 B.在线服务 C.运营维护 D.
下列有关水泥标准稠度用水量的说法错误的是()。A.测定水泥标准稠度用水量的方法
固定义齿修复中,若前牙缺隙小于对侧同名牙,可以通过以下措施改善美观,除外A.排牙
下列肿瘤哪个非真性肿瘤A.阑尾黏液囊肿 B.阑尾假黏液瘤 C.阑尾类癌 D
做市商可以分为( ): Ⅰ特定做市商 Ⅱ一般做市商 Ⅲ多元做市商 Ⅳ单
《中国药典》中,以番木鳖碱为质量控制成分之一的中药是A.苦参 B.麻黄 C.
(2018年真题)根据《民法典》规定,设立权利质权时,不属于只能办理出质
下列有关前后任注册会计师沟通的说法中,错误的是()。A.接受委托前的沟通是
最新回复
(
0
)