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Hearing Vision and Television
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accomplished advertising apertures apparatus attainable band Bell Laboratories Bell Telephone Laboratories brilliance capacity cathode-ray tube channels circuit close-up color commercial communication cycles demonstration detail developed distance effect electrical entertainment experimental field of reproduction field of view film frame frequency illumination impressions impulses inches increase involved kilocycles light source light-sensitive element limited lines maximum ment method motion picture necessary neon tube number of picture observed output perfect texture persistence of vision photoelectric cell photoelectric tubes picture elements picture signal possible practical present problems produced progress projected reactance reception repetition rate repro resolving power response scanning disc scanning system scene screen secure sensitive signal band sound broadcasting speed square standard subject matter sufficient synchronous motor technical tele Telephone television band television pick-up television reproduction television service television system television transmission tion trans transmitted utilizing visual voltage wave wire wire television