在线国产一区二区_成人黄色片在线观看_国产成人免费_日韩精品免费在线视频_亚洲精品美女久久_欧美一级免费在线观看

您現在的位置: Language Tips> Easy English> Odd Question  
   
 





 
The history of the fax machine
The history of the fax machine
[ 2005-03-14 08:04 ]

   
  Fax Machine
   
  The history of the fax machine

The history of the fax machineMost people might think that the fax machine, found in many offices and homes, is a relatively new piece of technology. In fact, a patent for the fax machine was issued in 1843, 33 years before the telephone! A Scottish clockmaker, Alexander Bain, invented this device in the same year that the first telegraph message was being sent across America.

Although Bain worked out the method, he never actually sent a fax transmission. It was not until 1865 that the first working fax machines and transmission service were set up. An Italian Abbotnamed Giovanni Caselli developed the " pantelegraph" which was used to send pictures and writing between French cities.

The way that a fax machine works is quite straightforward. A sensorscans horizontally across the sheet one line at a time - like your eyes when you're reading a book. If the sensor sees a white patch it records a 0, and if it sees a dark patch it records a 1. In this way the whole page is "digitised" into a string of 0s and 1s. A modemturns this into a series of high or low pitched sounds that are sent down the phone line to a remote receiver. At the other end, the sounds are turned back into 0s and 1s. These are printed onto a piece of paper as light or dark dots, and so the original picture is reproduced hundreds of miles away.

For the very first fax machines, the pictures had to be printed onto tin foilwith non-conducting ink. An electrodescanned across the surface and sensed a light or dark patch depending on the current that flowed. The transmitting and receiving machines had drums that spun at the same speed, and every revolution clicked 0.5mm to the left so that eventually the whole picture was scanned. These machines took about half an hour to send a 20cm x 15cm photograph.

But faxes didn't really take off until the 20th century. In 1902 Dr Arthur Korn developed a fax machine with an optical scannerthat allowed plain paper images to be sent. This is basically the same design used today, with the received image being printed on heat-sensitive paper. Nowadays a photojournalist can send a high-resolution pictureto his newspaper headquarters in less than a minute.

 

note:

 

 

 

 

 


Abbot: 修道士
pantelegraph: (早期的)傳真電報


sensor: 傳感器



modem: 調制解調器

receiver: 接收器

 

tin foil: 錫紙
electrode: 電極

 

 

 

optical scanner: 光電掃描儀

heat-sensitive paper: 熱敏感紙
high-resolution picture: 高解析度照片

中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
相關文章 Related Story
 
 
 
本頻道最新推薦
 
“蝸婚”英文怎么表達
“一生一世”的表白
倫敦新型雙層巴士設計驚艷亮相
各種“支付形式”的英文表達
Alice in wonderland《愛麗絲漫游仙境》精講之六
翻吧推薦
 
論壇熱貼
 
關于工資的英語詞匯大全
關于職業裝的英語詞匯
余光中《尺素寸心》(節選)譯
中國譯協中譯英最新發布各類專業術語直譯
功夫熊貓經典臺詞雙語

 

主站蜘蛛池模板: 国产另类一区 | 黄网在线观看 | 中文字幕一区二区三区在线视频 | 日韩电影一区 | 综合网激情 | 欧美第一页 | 亚洲精品在线免费观看视频 | 国产无遮挡呻吟吸乳视频 | 久久视频精品 | 三级网站 | 污网站免费在线 | 在线观看免费的网站www | 欧美日韩一区二区三区在线观看 | 久久www免费人成看片高清 | 国产综合视频 | 夜夜嗨av涩爱av牛牛影视 | 黄色毛片免费看 | 国产黄色在线免费看 | 一级黄色片欧美 | h视频在线免费观看 | 夜夜av| 日韩精品免费观看 | 日韩亚洲欧美一区二区 | 天天插天天射天天干 | 国产精品一区二区三区四区 | 久久99精品久久久久久久青青日本 | 精品国产乱码久久久久久1区2区 | 看全黄大色黄大片老人做 | 久久成人国产精品 | 久久午夜精品影院一区 | 2018狠狠干 | 欧美一区二区三区在线视频 | 91国产精品 | 久久精品国产亚洲a∨蜜臀 性视频网站免费 | 91免费版在线观看 | 国产精品99久久久久久宅男 | 妞干网视频| 91在线视频一区 | 欧美成人精品在线观看 | 亚洲国产精品久久久久秋霞不卡 | www.欧美.com |