How the novelty item of 1920 became the world-straddling colossus of 1940
IN 1921 Secretary of Commerce Herbert Hoover, who was charged with what meager regulation of the airwaves there was, called radio “an instrument of beauty and learning.” Waldemar Kaempffert, who, as editor of Scientific American , had followed the beginnings of the technology, in 1922 imagined “a radio mother … crooning songs and telling bedtime stories” while “some future Einstein” could elaborate his theories “to a whole world with an ear cocked to catch … his voice as it wells out of the Read more »