. The Bell System technical journal . Scene 5 Fig. 10 Scene 1 reproduced by courtesy of Loucks & Norling. Scenes 2 and 3 reproduced by courtesy of Fox Movietone News. Scenes 4 and 5 reproduced by courtesy of Paramount News. SUBJECTIVE SHARPNESS OF IMAGES 585 The Observers The observers were almost all Laboratories engineers associated withtelevision research and transmission problems. The average observerdevoted about one hour to the experiment on unequal horizontal andvertical resolutions, and about three hours (in two sessions) to theexperiment on small differences in resolution. Each observ
. The Bell System technical journal . Scene 5 Fig. 10 Scene 1 reproduced by courtesy of Loucks & Norling. Scenes 2 and 3 reproduced by courtesy of Fox Movietone News. Scenes 4 and 5 reproduced by courtesy of Paramount News. SUBJECTIVE SHARPNESS OF IMAGES 585 The Observers The observers were almost all Laboratories engineers associated withtelevision research and transmission problems. The average observerdevoted about one hour to the experiment on unequal horizontal andvertical resolutions, and about three hours (in two sessions) to theexperiment on small differences in resolution. Each observer wascarefully instructed with regard to the purpose and the mechanism ofthe experiments, and was allowed to examine trial pictures to seeclearly the effects of changing the shape and size of the figure ofconfusion. Motion Picture Film Standard 35 mm. black-and-white sound film on safety base. Thearea projected onto the screen was inch high by inch wide. For the experiment on unequal horizontal and vertical resolutio
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
