The oscilloscope can be adjusted so that repetitive signals can be observed as a continuous shape on the screen.A storage oscilloscope allows single events to be captured by the instrument and displayed for a relatively long time, allowing observation of events too fast to be directly perceptible. storage oscilloscope allows single events to be captured by the instrument and displayed for a relatively long time, allowing observation of events too fast to be directly perceptible.
On 27 August 1920, regular wireless broadcasts for entertainment began in Argentina, pioneered by the group around Enrique TelÃ©maco Susini, and spark gap telegraphy stopped. On 31 August 1920 the first known radio news program was broadcast by station 8MK, the unlicensed predecessor of WWJ (AM) in Detroit, Michigan.
The first station on this frequency was WEVD-FM, which broadcast from July 1, 1951 to December, 1952, when WEVD moved to 97.9. WLIB appeared on September 15, 1965, becoming WBLS in 1974. WBLS shifted from an Urban format to an Urban AC format on January 6, 2005.