Abstract
REFERRING to Prof. H. H. Dixon's letter in NATURE of April 30, Miss E. Armitage, Dadnor, Ross, Herefordshire, writes to suggest that the checkerboard appearances may be akin to that commonly observed when studying photographs of lunar phenomena, the 'walled plains' sometimes appearing as convexities and sometimes as concavities, according to which side the shadow appears to fall.
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A Binocular Illusion. Nature 141, 825 (1938). https://doi.org/10.1038/141825b0
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DOI: https://doi.org/10.1038/141825b0