首页
登录
职称英语
What discovery was the basis of photography? [br] [originaltext] The camera
What discovery was the basis of photography? [br] [originaltext] The camera
游客
2023-11-13
26
管理
问题
What discovery was the basis of 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.
选项
A、using a special paper.
B、adding common salt to silver salt.
C、tinting the temporary image.
D、using a special piece of metal.
答案
D
解析
细节题。首张永久性照片如何制作的:采用一种特殊金属。
转载请注明原文地址:https://tihaiku.com/zcyy/3184388.html
相关试题推荐
thespaceshuttleDiscoverycompleteda______missionuponitsreturntoKennedy
OneofthereasonsthatBombardierplanstocutjobswasthat[originaltext]
WhenwasthefirstOlympicGamesheld?[br][originaltext]TheOlympicGam
Whatisthereasonforteenstodothesameastheirpeers?[originaltext]Fo
Thetalkswillbeabout______.[originaltext]IsraeliandPLOnegotiatorsres
Whenthebirdscatchtheflu,it______.[br][originaltext]Thecurrentstr
Whenthebirdscatchtheflu,it______.[originaltext]Thecurrentstrainof
Whatisthepassagemainlyabout?[br][originaltext]ThemajorityofAustr
[originaltext]NEWYEAREveryculturea
Howmanypolicemenwerekilledinthebombing?[br][originaltext]Iraqise
随机试题
拙政园(theHumbleAdministrator’sGarden)是中国著名的四大园林之一。它位于苏州城北,是江南园林的典型代表,也是面积最大
[originaltext]Thestudyon400children,inthejournalScience,initially
TheolderIget,themoreIvaluefriends,yetthe______timeandenergyIhave
碱性磷酸酶测定推荐使用的缓冲液是A.碳酸盐 B.二乙胺 C.2-氨基-2-甲
预防医学的工作模式为()。A.健康—疾病v健康 B.社会—心理—健康 C
安氏Ⅱ类亚类错是指A.双侧磨牙为远中关系 B.一侧磨牙为远中关系,另一侧为中性
如果期货市场上没有期货投机者,只有套期保值参与者元期货交易,那么只有在买入套期保
目前,关于人类胚胎干细胞研究和应用中道德争议的焦点问题是A.人类胚胎干细胞是否可
对于苯妥英钠中毒的有效的治疗措施,下列说法不正确的是A.用硫酸镁导泻B.静滴10
()是全国银行间债券市场的主管部门。A:中国人民银行B:中国银监会C:财政部
最新回复
(
0
)