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Author: WikiMatrix
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English[en]
In 1956, British psychiatrist Lionel Penrose and his son, mathematician Roger Penrose, submitted a short article to the British Journal of Psychology titled "Impossible Objects: A Special Type of Visual Illusion".
Finnish[fi]
Vuonna 1956 brittiläinen psykiatri Lionel Penrose ja hänen poikansa matemaatikko Roger Penrose laativat mahdottomista kuvioista lyhyen artikkelin Impossible Objects: A Special Type of Visual Illusion.