Letter | Published:

Refractive Index of Gums

Nature volume 113, page 643 (03 May 1924) | Download Citation

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Abstract

IN the letter on the Refractive Indices of Gums published in NATURE, February 2, p. 159, the formula used in computing the indices was wrong, and should have been =1+pc, where c is the difference between the refractive index of the standard material and unity. The order in which the gums are placed in the table is correct, but the values given to are too large.

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  1. 9 Baring Crescent, Exeter.

    • A. MALLOCK

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DOI

https://doi.org/10.1038/113643c0

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