Useful in the study of pharmaceutical products and biological molecules, polarization IR spectroscopy has undergone continuous development since it first emerged almost 100 years ago. Capturing the state of the science, this volume demonstrates how the technique can be used to obtain important information about the structure and spectral properties of oriented compounds. Topics discussed include the theoretical basis of linear-dichroic infrared (IR-LD) spectroscopy, the orientation method of colloid suspensions in a nematic host, the structural elucidation of inorganic and organic compounds and glasses, and applications in pharmaceutical analysis and the chemistry of dyes.