Letter | Published:

Reflexion from Paper

Naturevolume 149page613 (1942) | Download Citation



I HAVE observed a curious optical effect which I have not seen described anywhere. If an open book is illuminated fairly strongly from one side, for example, from over one shoulder, the general colour of the white paper is different for the two eyes when one or the other is closed. The effect has been tried with several subjects with the same result. When the light comes over the left shoulder and the left eye is open the pages have a bluish tinge ; when the right eye is open and the left closed the tinge is reddish. If the light comes over the right shoulder the above effects are reversed. If the light is centrally placed above and behind the head there is no difference.

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  1. 5 Watts Avenue, Rochester, Kent

    • E. BURKE


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