【英语翻译Television,themodernwonderofelectronics,bringstheworldintoyourownhomeinsightandsound.Andtheword‘television’meansseeingfar.Televisionworksinmuchthesamewayasradio.Inradio,soundischangedintoelectromagneti】

　　英语翻译

　　Television,themodernwonderofelectronics,bringstheworldintoyourownhomeinsightandsound.Andtheword‘television’meansseeingfar.

　　Televisionworksinmuchthesamewayasradio.Inradio,soundischangedintoelectromagneticwaveswhicharesentthroughtheair.Experimentsleadingtomoderntelevisiontookplacemorethanahundredyearsago.Bythe1920sinventionsandresearchershadturnedtheearlytheoriesintoworkingmodels.YetittookanotherthirtyyearsforTVtobecomeindustry.

　　TheinfluenceofTVonthelifeofthepeopleisincalculable:itcaninfluencetheirthoughtsandtheirwayoflife.Itcanalsoaddtotheirstoreofknowledge.EducationalTVstationsofferteachinginvarioussubjects.SomehospitalsuseTVformedicalstudentstogetclose-upviewsofoperations.Atfirsttelevisionprogramswerebroadcastinblack-and-white.Withthedevelopmentofscienceandtechnology,theproblemofhowtotelecasttheminfullcolorwassolvedandbythemiddle1960sthenationalnetworkswerebroadcastingmostoftheirprogramsincolor.

　　Theprogramsthatpeoplewatcharenotonlylocalandnationalones.Sincethelaunchingofthefirstcommunicationssatellite,moreandmoreprogramsaretelecast‘live’fromallovertheworld.

　　PeopleinSanFranciscowereabletowatchthe1964OlympicGamesinTokyo.Andlivetelecastsnowcomefromouterspace.In1969,thefirstastronautstolandonthemoontelevisedtheirhistoric‘moonwalk’toviewersontheearth.Sincethen,astronautshaveregularlysenttelecasttotheearth.