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Why Do Photo Finish Images Look Weird?


Physics Education Volume 47, Number 5, ISSN 0031-9120


This paper deals with effects that appear on photographs of rotating objects when taken by a photo finish camera, a rolling shutter camera or a computer scanner. These effects are very similar to Roget's palisade illusion. A simple quantitative analysis of the images is also provided. The effects are explored using a computer scanner in a way that is also suitable for a student project activity. (Contains 10 figures.)


Gregorcic, B. & Planinsic, G. (2012). Why Do Photo Finish Images Look Weird?. Physics Education, 47(5), 530-536. Retrieved August 21, 2019 from .

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