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Re: 新 东 方 背 诵 五 十 篇
06 Television
Television-----the most pervasive and persuasive of modern technologies,
marked by rapid change and growth-is moving into a new era, an era of
extraordinary sophistication and versatility, which promises to reshape
our lives and our world. It is an electronic revolution of sorts, made
possible by the marriage of television and computer technologies.
The word "television", derived from its Greek (tele: distant) and Latin
(visio: sight) 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 (focused on a special photoconductive plate within a camera)
into electronic impulses, which can be sent through a wire or cable.
These impulses, when fed into a receiver (television set), 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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