首页
登录
职称英语
Why were early radio broadcasts heard by such a small audience? [br] [originalt
Why were early radio broadcasts heard by such a small audience? [br] [originalt
游客
2024-10-26
30
管理
问题
Why were early radio broadcasts heard by such a small audience? [br]
It was an Italian inventor who created the first wireless device for setting out radio signals in 1895. But not until the American inventor Lee De Forest built the first amplifying vacuum tube in 1906 did we get the first radio as we know it. And the first actual radio broadcast was made on Christmas Eve of 1906. That’s when someone working from an experimental station in Brand Rock, Massachusetts, arranged the program with two short musical selections of poem and brief holiday greeting. The broadcast was heard by wireless operators on ships with a radio through several hundreds miles. The following year, De Forest began regular radio broadcasts in New York. These programs Were similar to much what we hear on radio today. In that, De Forest played only music. But because there were still no home radio receivers, De Forest’s audiences consisted only of wireless operators on ships in New York Harbor. There is no doubt that radio broadcasting was quite a novelty in those days, but it took a while to catch on commercially. Why? Hmm, for the simple fact that only a few people, in fact, only those who tinkered with wireless telegraphs as a hobby owned receivers. It wasn’t until the 1920s that someone envisioned mass appeal for radio. This was radio pioneer David Sarnoff who predicted that one day there would be a radio receiver in every home.
选项
A、Military communications officers.
B、People who treated radio technology as a hobby.
C、People who lived in big cities.
D、People with an interest in music.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3818581.html
相关试题推荐
Whatisthenewsmainlyabout?[br][originaltext]AnIndonesianferrypacked
Whatisthenewsmainlyabout?[originaltext]AnIndonesianferrypackedwith
WhichofthefollowingisNOTmentionedinthefollowingnews?[originaltext]
WhohadtoleavetheGazaStripandtheWestBank?[br][originaltext]Israe
Accordingtothetalk,theownerofabikehasto______.[originaltext]Hell
WhichofthefollowingisNOTneededfortheLostPropertyForm?[originaltext]W
Whatisthepurposeofthenationalsurvey?[br][originaltext]Chinesegove
WhywerethefishingcrewstrandedonOct.10th?[originaltext]Elevenfishin
PeoplechooseLondonforpost-Christmasshoppingbecause______.[br][originalt
PeoplechooseLondonforpost-Christmasshoppingbecause______.[br][originalt
随机试题
Naturallytheaudiencesthatsupportvariouskindsofmusicarenotidentic
[originaltext]W:Firstofall,whendopeoplestartworkinAmericanoffices?M
关于钢结构构件防腐蚀设计,下述说法正确的是( )。A.不考虑环保节能的要求
关于SML和CML;下列说法正确的有()。 Ⅰ.两者都表示有效组合的收益与风
2014年12月,钟某将名下的一处房屋出售给梁某,双方签订了买卖合同并约定于20
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
共用题干国内某知名电视生产企业采用SWOT分析法,分析企业面临的内外部环境,并
()研究和劳动定额学的关系更为紧密。A.非正式组织 B.动作与时间 C.管
根据人的高级神经活动中两种信号系统谁占相对优势而划分的智力类型是( )A.视觉
某工程脚手架搭设方案因荷载参数取值错误,造成模板坍塌,按照施工事故发生的原因划分
最新回复
(
0
)