Electronics and automation have made it possible to produce pictures and text far more quickly than before. Photographic reproduction eliminates the need for type and printing press. And fewer specialists, such as type-tters, are needed to produce a paper or magazine by the photo-offt (照相平板胶印) method. Therefore, the publishing of newspapers and magazines becomes more economical. Furthermore, photo-copies can be nt over great distances now by means of television channels and satellites such as Telstar. Thus, pictures can be brought to the public more quickly than previously.
面试问题及回答技巧 Machines that prepare printed texts for photo-copies are being ud a great deal today. Thousands of letters and figures of different sizes and thickness can now be arranged on a black glass disc that is only eight inches in diameter, to be printed in negative form(white on a black background). The disc on the machine turns constantly at the rate
of ten revolutions a cond. A beam of light from a slroboscopic (频闪的) lamp shines on the desired letters and figures for about I wo-millionths of a cond. Then the image of the letters and figures that were illuminated is projected onto a film through lens. The ction of film is large enough to hold the equivalent of a page of text. There is a keyboard in front of the machine that is similar to the keyboard of a typewriter, and the machine operator has only to strike the proper keys for the image of the corresponding letters to be immediately transferred to the film. The negative image on the film can quickly be transferred onto paper. This method makes it as easy to reproduce photographs and illustrations as it is to reproduce the text itlf.
的确良 Film, being light and small, can be nt rapidly to other places and ud to print copies of the text where they are needed. Film images can also be projected easily on a movie or television screen. Television broadcasts are limited to an area that is within sight of the nding station or its relay ( 中继 ). Although television relays are often placed on hills and mountains so that they can cover a wider region, they still can not cover more land than one could e from the same hilltop on a clear day. However, the rays also go out int
珠海翻译o the atmosphere, and if there is a relay station on a satellite that revolves around the earth, it can transmit the pictures to any point on the earth from which the satellite is visible. Three satellites permanently revolving over the equator transmit any television program to any part of the earth. This makes it possible for world editions of newspapers to give the news in all countries at the same time. Some day it may be possible for a subscriber to a televid newspaper to press a button and e a newspaper page on his television screen. He could also decide when he wants the page to turn, and, by dialling different numbers such as tho on a telephone dial, he could choo the language or the edition of the paper he wants to read. It ems strange to think that, even today, methods of the past are not entirely uless. For example, sometimes press agencies that u radio and Telstar u carrier pigeons to nd messages between offices in large cities becau the pigeons are not bothered by traffic problems.
It may be some time before television ts become common in the average homes in Africa and Asia. However, radio is already rapidly becoming accessible to thousands of people in the areas. And, now that good radios are being made with transistors, and th
eir price is gradually dropping becau of mass production, it may not be" too long before radios become commonplace in areas which have no newspapers. Transistors make it possible for people to carry small radios wherever they go, without need of electric current. Even television ts are now operating on transistors, and the pocket TV may soon be as widespreadlove paradi mp3
漫画书的英文 as the pocket radio.bulldozer
Now that scientific progress is making it possible to nd the news to all the
inhabitants of the earth, it will be important to consider what news is going to be nt to them. No matter what criteria are ud in making the decision, a decision must be made, since no one would' have time to read or listen to an account of everything there is going on in the world!
People who have time to read veral papers can already compare different reports of the same event. When an event has political significance, each paper reports it from the
braxpoint of view of its own political beliefs or preferences. Ideally, of cour, the expression of editorial opinion should be limited to the editorial page, and the news articles should be objective—telling the facts as completely as possible, without trying to give them a particular interpretation, or without otherwi trying to influence the reader's opinion. However, reporters and editors are only human, and if they have strong political beliefs it is almost impossible for them to hide them. If editors believe their point of view is best for the readers of their paper, what's to stop them from using the paper to try to influence public opinion? And if, some day, a world newspaper becomes a reality, will it be the most powerful press agencies that will choo the news to be nt out to all countries?
