Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text , "Technical Notes," J. Opt. Soc. Am. 43, 322-322 (1953) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
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A 1953 study studied this question.