Abstract
Elliott and Ambrose1 have described measurements with polarized infra-red radiation. In a previous paper2, we have explored the use of polarized radiation in studying the absorption spectra of oriented polymers. We have now extended this work by a much-improved technique, using large selenium mirrors to obtain the polarization, and have measured the spectra of many substances between 2 and 15 µ. Particularly interesting results have been found with crystalline solids such as simpler amides, dibenzyl, benzyl and diphenyl acetylene. A small amount of the solid is melted between a pair of rock-salt plates and allowed to crystallize so as to obtain so far as possible a linear orientation of the crystal growth.
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References
Nature, 159, 641 (1947).
Thompson and Torkington, Proc. Roy. Soc., A, 184, 3 (1945); Trans. Farad. Soc., 41, 260 (1945).
Richards and Thompson, J. Chem. Soc., in the press.
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MANN, J., THOMPSON, H. Absorption Spectra with Polarized Infra-Red Radiation. Nature 160, 17 (1947). https://doi.org/10.1038/160017a0
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DOI: https://doi.org/10.1038/160017a0
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