An Optical Illusion

descriptionPublicationkeyboard_double_arrow_right Article 23 Apr 1914 English Publisher:Springer Science and Business Media LLCJournal:Nature, volume 93, pages 189-189 (issn: 0028-0836, eissn: 1476-4687,

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Authors: Giltay, J. W.;

doi: 10.1038/093189c0

An Optical Illusion

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Abstract

SOME days ago I was reading, the sunrays falling aslant on my forehead, it being about five o'clock p.m. After having read awhile, the letters showed a vivid red, the paper itself retaining its white colour. The rays did not fall on either of the two sides of the page.

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