Search results
Results from the WOW.Com Content Network
The Radio Research Project was a social research project funded by the Rockefeller Foundation to look into the effects of mass media on society. [ 1 ] In 1937, the Rockefeller Foundation started funding research to find the effects of new forms of mass media on society, especially radio.
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave ...
The rapid spread of film in the 1920s and radio in the 1930s led to proposals to use it for distance education. [62] By 1938, at least 200 city school systems, 25 state boards of education, and many colleges and universities broadcast educational programs for public schools. [63] One line of thought was to use radio as a master teacher.
The concept of IFD was initially used in radio transmission. [2] The diagrammed system may also include feedback, a reply or response to the signal that was given out. The return paths can be two-way or bi-directional: information can flow back and forth. [2] An IFD can be used to model the information flow throughout an organisation.
Spectrum management is a growing problem due to the growing number of spectrum uses. [6] Uses include: over-the-air broadcasting, (which started in 1920); government and research uses (which include defense, public safety—maritime, air, police—resource management, transport, and radio astronomy); commercial services to the public (including voice, data, home networking); and industrial ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Educational research refers to the systematic collection and analysis of evidence and data related to the field of education. Research may involve a variety of methods [ 1 ] [ 2 ] [ 3 ] and various aspects of education including student learning, interaction, teaching methods , teacher training, and classroom dynamics.