The word television, derived from its Greek and Latin roots, can literally be interpreted as sight from a distance. Very simply put, it works in this way: through a sophisticated system of electronics, television provides the capability of converting an image into electronic impulses, which can be sent through a wire or cable. These impulses, when fed into a receiver , can then be electronically reconstituted into that same image.
Television is more than just an electronic system, however. It is a means of expression, as well as a vehicle for communication, and as such becomes a powerful tool for reaching other human beings.
The field of television can be divided into two categories determined by its means of transmission. First, there is broadcast television, which reaches the masses through broad-based airwave transmission of television signals. Second, there is nonbroadcast television, which provides for the needs of individuals or specific interest groups through controlled transmission techniques.
Traditionally, television has been a medium of the masses. We are most familiar with broadcast television because it has been with us for about thirty-seven years in a form similar to what exists today. During those years, it has been controlled, for the most part, by the broadcast networks, ABC, NBC, and CBS, who have been the major purveyors of news, information, and entertainment. These giants of broadcasting have actually shaped not only television but our perception of it as well. We have come to look upon the picture tube as a source of entertainment, placing our role in this dynamic medium as the passive viewer.
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分数和能力The Score and Ability
早起重要性The Important of Early Rising
保护自己Protect Ourselves
地铁的好处 The Advantages of Metro
四年后的约定 The Deal in Four Years
关于阅读古典文学的人越来越少
交朋友 Make Friends
网吧 The Internet Bar
《雾都孤儿》读后感 Book Review of Oliver Twist
我的母亲 My Mother
游客的行为素质The Tourist’s Behavior
诚实Be Honest
关于人生得与失
理性爱国 Rational Patriolism
美国人流行说什么? Popular colloquial terms in the U.S.
中国人应该庆祝西方节日吗?Should Chinese Celebrate Western Festivals?
猴王的记忆 The Memory of Monkey King
应不应该留意拼写?Should Attention Be Given to Spelling?
一封感谢函A thanking letter
学生课堂上玩手机 Students Play Smart Phones in Class
家 Home
端午节 Dragon Boat Festival
努力和运气Hard-work and Luck
关于自愿者
低碳生活 Low Carbon Life
外表重要吗?Is Outlook Important?
安全问题之我见 My View on Safety Problems
如何戒烟? How to Quit Smoking?
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