Radios get smart /
Guglielmo Marconi's first radio broadcast was a point-to-point affair, a transmission from England to one person in Nova Scotia. It was the radio equivalent of flying an airline's passengers across the Atlantic one at a time. Today, we pack radio waves into the air as tightly as economy se...
|Acceso en línea:||https://catalogo.ucatolica.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=12811|