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Abstract
The invention of using radio waves, for sending voice signals over long distances, brought profound changes to human society. The idea was picked up, initially by enthusiasts called radio amateurs, and later by business entities, to start radio stations transmitting voice and music programs for public entertainment. This was the beginning of public broadcasting. Rapid progress in communication technology enabled transmission of video information in the same fashion, called television (TV). The development has been very rapid in the recent past. TV has finally reached the old concept of being the picture frame on the wall.
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Notes on contributors
R. N. Misra
R N Misra had his education at Allahabad and Roorkee University. He joined the prestigious Physical Research Laboratory (PRL), Ahmedabad, and has worked there for more than four decades in the development of space instrumentation. His research work has been reflected in published work totaling about one hundred papers. He has contributed to the cause of space science education, most recently under the umbrella of the Centre for Space Science and Technology Education in Asia and the Pacific (CSSTEAP), Dehradoon. He is a fellow of IETE.