Excerpt from Journal of the Society of Motion Picture and Television Engineers, 1950, Vol. 54The treatment covers several of the parameters, but it cannot pre sume to solve completely the problem Of tolerances. It constitutes merely a first order attack on the major quantities involved.The discussion is divided into three parts: (1) factors involving the granular appearance of the random noise, (2) factors involving the perception of adjacent differences in luminance, and (3) factors involving the translation of Signal voltages into image luminances.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.