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Points from Foregoing Letters

Nature volume 145, page 73 (13 January 1940) | Download Citation

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Abstract

REGENERATED cellulose sheet is shown by D. G. Drummond to be birefringent in a way which might reasonably be expected from extrapolation of Spence's results for sheets made from cellulose esters. The relative unimportance of side-chain orientation in cellulose itself results in a generally greater birefringence and a change in the 'slow ray direction' as compared with the ester films. Numerical results for regenerated cellulose sheets are given.

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https://doi.org/10.1038/145073a0

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