首页
登录
职称英语
Why were early radio broadcasts heard by such a small audience? [originaltext]
Why were early radio broadcasts heard by such a small audience? [originaltext]
游客
2024-10-06
12
管理
问题
Why were early radio broadcasts heard by such a small audience?
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、Few people owned the necessary equipment.
B、The music selection was not very popular.
C、Few ships came into New York harbor.
D、The radio signal was too weak to reach a mass audience.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3788765.html
相关试题推荐
WhatbothersNancyaboutherneighbor’sson?[br][originaltext]W:Howareyour
WhatbothersNancyaboutherneighbor’sson?[br][originaltext]W:Howareyour
WhatbothersNancyaboutherneighbor’sson?[originaltext]W:Howareyournewn
Whatisnottrueaboutthepatientmentionedinthebeginning?[originaltext]F:
Whatisthisnewsmainlyabout?[br][originaltext]TheFederalAviationAd
Nigeria’selectionwas______accordingtomostforeignobservers.[originaltext
Whatdoesthespeakersayabouttheskinofstarfish?[br][originaltext]Wel
Whatdoesthespeakersayabouttheskinofstarfish?[br][originaltext]Wel
Whatdoesthespeakersayabouttheskinofstarfish?[originaltext]Welcomet
WhyAmericanscientistsaredevelopingthesemaps?[br][originaltext]Amer
随机试题
Hedoesn’t(say)inhisletter(that)he’sgoingto(beback)(ornot).A、sayB、t
Inafamilywheretherolesofmenandwomenarenotsharplyseparatedandw
TipsforTravelingAloneWhenitcomestotraveling,so
蜜炙黄芪主要用于() A.表卫不固的自汗 B.中气不足 C.血热
男婴,8个月,生后一直人工喂养,因惊厥就诊入院。昨日起突发惊厥,表现为两眼上翻,
在建设投资中,工程费用包括()。A:安装工程费用B:建筑工程费用C:基本预备
下列有关注册会计师评估特别风险的说法中,正确的是()。A.注册会计师应当将
(2020年真题)某常规投资项目,在不同收益率下的项目净现值如下表。则采用线性内
正弦交流电路中,电容元件的端电压有效值保持不变,因电源频率变化使其电流减小,则频
不属于稳定深基坑坑底的方法是()。A.增加围护结构入土深度 B.增加围护结构
最新回复
(
0
)