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.
上一篇: 名师推荐六级优秀范文背诵(11)
下一篇: 名师推荐六级优秀范文背诵(2)
联合利华将在美容护肤产品中弃用“美白”等字眼
国际英语资讯:WHO says living with COVID-19 to be new normal as global cases top 10 mln
体坛英语资讯:Feature: Winter Olympic champion to winter sports advocator
体坛英语资讯:(Sports Focus) Desire to scale Qomolangma never dies: 60th anniversary of 1st ascent of nort
假如我会七十二变
春带来的勃勃生机
我的摩尔庄园
花瓶
国内英语资讯:China, Ethiopia agree to strengthen China-Africa solidarity in fight against COVID-19
我受伤了
全球新冠肺炎确诊病例超1000万例
国内英语资讯:Chinese vice premier calls for progress in pushing fishing ban
我的英语老师
教育部:保障今年义务教育巩固率达到95%
月光
礼物是小兔送来的
英国推中小学补课计划
国际英语资讯:Merkel, Macron demonstrate unity on post-pandemic EU recovery
体坛英语资讯:EuroLeague cancels remainder of 2019-20 season
体坛英语资讯:Djokovic stages humanitarian tennis exhibition tournaments across Balkans
国内英语资讯:CPC leadership holds meeting to deliberate Party regulations
The Person I Admire the Most 我最敬佩的人
研究:长时间的日晒会削弱脑力
拼多多创始人黄铮的财富超越马云,成为中国第二富
体坛英语资讯:Colombia boss Queiroz calls for December end to European football season
体坛英语资讯:Kamworor dreams to reclaim world cross country title
体坛英语资讯:Botafogo boss Autuori says Brazilian football not ready to return
国内英语资讯:China to partially resume English proficiency tests in July
面试
《隐秘的角落》爆火:秦昊这句台词,已成为大家的口头禅!