An Experimental Study of Visual Movement and the Phi Phenomenon (Classic Reprint)

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Excerpt from An Experimental Study of Visual Movement and the Phi Phenomenon This arrangement made it possible for us to start with any pre exposure field, to present the first member of the stimulus for a given length of time, then after a variable interval (during which the pre exposure field was repeated) to present the second member for the desired length of time, and then to return to the pre-exposure field. The shutter permitted of total times up to 380, 210 a was the longest needed. The eye-piece of the exposure apparatus was inside a dark chamber, and the 0 was allowed 10 min. To become partially dark adapted before work was begun. 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.