Abstract
IF one looks toward a bright field of white light (white cloud or white fluorescent lamp), interposes an orange Wratten No. 21 filter for 5 sec., then removes the filter, a bright, saturated greenish-yellow pattern is seen. It is of irregular, blotchy shape and persists for 1–2 sec.
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SHURCLIFF, W. Colour Vision Phenomenon of a New Class. Nature 183, 202 (1959). https://doi.org/10.1038/183202b0
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DOI: https://doi.org/10.1038/183202b0
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