This document will cover all the information you need to know about the basic information of Chromatic Adaptation and how it got to this day. Chromatic adaptation is an aspect of vision that can trick your eyes into seeing things differently than they actually are. There are many things in your daily life where color matching occurs and you most likely don't even realize it. For example "when you see a white piece of paper indoors, away from natural sunlight, the paper should appear white, but once you look at the paper outdoors, in natural sunlight, the paper may appear bluish due to waves from the sky hitting that piece of paper" (Sabine Süsstrunk, 2011) Chromatic adaptation is defined as: “the alteration by photosynthesizing organisms of the proportions of their photosynthetic pigments in response to the intensity and color of available light , as shown by the algae in the coastal zone, which changes from green to red as the zone descends. (Collins English Dictionary, 2009) (Science Buddies) Chroma adaptation is often seen as a mind trick, but I think it is much more than that, "Chroma" means color and adaptation, which could also be seen as adaptation to change. I believe your eyes are simply adapting to the change in the image and making you see that image differently. For example, when you look at the black dot in the top half of the image for thirty seconds and then look at the bottom half of the image, you can't even tell that the second image is half blue and half yellow; this is because your eyes have adapted beforehand to staring at the yellow and blue image and it just looks natural to your eyes. Notice in the top half and bottom half of the image... in the center of the paper... determining the probability. During the visit to Freiburg, Kries was asked to help a world-famous scientist with his work. For unknown reasons, Kries rejected his offer. Kries has been called Helmholtz's "greatest disciple". (Herrn E. Hering, 2013) Color adaptation has been studied for many years and by many different scientists. Scientists today use color adaptation to test the eyes of ordinary people and how quickly their eyes react to this visual effect. Works Cited http://ivrg.epfl.ch/page-65575-en.html http://dictionary.reference. com/browse/chromatic+adaptation http://www.sciencebuddies.org/Files/2191/4/HumBeh_img004.jpg http://en.cyclopaedia.net/wiki/Von-Kries http://www.cambridge.org /us/academic/subjects/life-sciences/neuroscience/duplicity-theory-vision-newton-present-http://onlinelibrary.wiley.com/doi/10.1002/col.21799/abstract