Subject Zeeman term

The aim of this type of investigation has been the better characterization of protein spectra, in terms of their constituent aromatic amino acids, by increasing the degree of resolution of the fine structure of the latter and hence making their identification and differentiation more -certain. This effect of low temperature results from the stabilization of internal Stark and Zeeman effects, which are the chief temperature-sensitive factors determining the frequency spread of absorption bands. Sinsheimer et al. (1950) give a brief review of the subject in relation to organic compounds. 

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