Optical Illusions & Visual Phenomena
Optical illusions don’t “trick the eye”, nor “fool the brain”, nor reveal that “our brain sucks”, … but are fascinating!They also teach us about our visual perception and its limitations. My selection here emphazises beauty and interactive experiments; I also attempt explanations of the underlying visual mechanisms where possible. Returning visitor? Check →here for History/News. »Optical illusion«
Visual Dictionary Online
QA International launched El Diccionario Visual, a new valuable resource to learn Spanish. Includes 17 all-around themes to explore, including the human body, sciences and food. From the image to the word and its definition, the Visual Dictionary Online is an all-in-one reference. Search the themes to quickly locate words, or find the meaning of a word by viewing the image it represents. What’s mo
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