... broadcasts in the United States began in 193 9, but television did not reallybecome (9) ___________ until later the Second World War. Between 194 5 and 195 5 there were rapid (10) ___________ in ... By 192 3, Vladimir Zworykin , a Russian, had invented a camera tub that could turn pictures into electric (7) ___________ . By 192 9, Zworykin had built a television system that work. By 193 5, ... quality (3) __________ the middle of the 195 0s.Color television broadcasts began in the United States in 195 4, in Japan in 196 0 and in Europe in 196 7. The first (4) ____________ on the moon...