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Abstract

The measurements described in this report were carried out in order to examine the mechanism and characteristics of the discharge of the target of an image orthicon camera tube by the scanning beam. Conclusions have been drawn relating to the exposure time of the tube and the way in which this influences the portrayal of a moving object. The tube used in these investigations was the 4 1/2 in image orthicon type P.822 manufactured by the English Electric Valve Co. Ltd.

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