1920年11月2日,在美国宾夕法尼亚州匹兹堡市,西屋电器公司创办的KDKA电台开始定期广播。这一天被公认是世界广播事业的诞生日。新出世的广播以其无与伦比的时效和真实生动的优势迅速成长为最强势的主流媒体。但是自电视媒体诞生以后,由于电视不仅具有广播所具有的亲切、生动等优势,还具有形象性和更真实、更具现场感的独特优势,广播迅速从传媒界的大哥退 On November 2, 1920, KDKA Radio, a company founded by Westinghouse Inc. in Pittsburgh, PA, began regular broadcasts. This day is recognized as the birth day of the world’s broadcasting. With its unmatched timeliness and real vivid advantages, the newborn radio has rapidly grown into the most powerful mainstream media. However, since the birth of the television media, the television has not only the advantages of cordiality and vividness of broadcasting, but also has the unique advantages of being image-based and more authentic,