Excerpt from Development and Operation of Television for Studying Fish Behavior in Otter TrawlsTo meet these requirements, an Image Orthicon camera was chosen because it can produce a picture of adequate quality with as little as one-half foot-candle Of illu mination. Other types, such as Vidicon or C. P. S. Emitron, require considerably more illumination. The disadvantages of Image Orthicon equipment are greater bulk, more complex circuitry, and higher cost. These were accepted, however, as high sensitivity is essential for Observing fish under low illumination without risk of changing their behavior by use of artificial light.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.