Journal Of The Society Of Motion Picture And Television Engineers

Excerpt from Journal of the Society of Motion Picture and Television Engineers, Vol. 57: This Issue in Two Parts; Part I, December 1951 Journal; Part II, Index to Vol; 57; July-December 1951 Discussed is the use of a high-speed camera as a tool in the Company's Engi neering Division. Motion of fast moving parts is easily plotted by the use of a special timing disc graduated to sec. Through the use of negative film, film can be processed for study within two hours. The design and proving of the light, fast-moving parts in business machine mechanisms has been a difficult and time-consuming job. Advances in this field, while continuous, have been obtained only at a high cost in time and labor. In our study of the action of these mechanisms, we had been limited to the current instrumentation methods and to others which we improvised to record time and movement. But we had felt for some time that if we could slow down or actually stop the normal, rapid motion of parts under study, then our engineering work would be greatly simplified. Five years ago our Engineering Group had a particularly perplexing problem which had been under study for several years and to which a number of solutions were submitted. The question was how could we choose the right one without extensive testing. A high-speed camera capable of exposing 3000 frames a second was procured and put to work on this problem. The camera quickly proved to the satisfaction of engineering the correct solution. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.

Excerpt from Journal of the Society of Motion Picture and Television Engineers, 1950, Vol. 54 The 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 Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.

Excerpt from Journal of the Society of Motion Picture and Television Engineers, Vol. 60: January June, 1953 As is well known, substitution Of image orthicons for iconoscopes requires a substantial reduction of the light intensity to secure operation of the pickup tube at the proper point on the characteristic curve. Many means of accomplishing this have been suggested. We elected an extremely simple method. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.