Radio
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
Collections:
Religious Studies, Education, Psychology, History, Literature, Philosophy, Entire Library
...Waves The prime purpose of radio is to convey information from...another through the intervening media (i.e., air, space, nonconducting...industry increased, as did radios popularity. In 1926 the first...ushering in the golden age of radio. Generally credited with creating...later, a land-based digital radio subscription service was inaugurated in the United States. Radios that combine transmitters and...