Physical Researches on Sensation (Classic Reprint)

Angebote / Angebote:

Excerpt from Physical Researches on SensationWhen the eye was fatigued with any color, a piece of white paper placed where the white light from the arc fell upon it, appeared of a tint always complementary to the color affecting the eye. This afforded a convenient means of enabling the experimenter to deter mine the degree of exhaustion of the retina.The time allowed for the fatiguing process with all colors was about five minutes. The uniformity ofthe measurements, for some of which this time was even doubled, seemed to indicate that with light of a given intensity the exhaustion of the color sensation reached a maximum in a few minutes, and that further exposure produced no effect. The following experiment served to confirm this inference The eye was exposed to a band of pure red, the center of which had a wave length, 680, u, and persistence observations were made on a similar band of red the center of which had a wave length i.= Normal persistence 0179 see. The results are as follows.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.