Recording of the optical rotation spectrum using the Weigert effect in AgCl-Ag films

Due to its spectral properties a dichroism, induced in thin light-sensitive AgCl films, doped by granular Ag, makes it feasible to record spectra of t he optical rotation in the visible region. In this paper the experimental d ata are presented for the recorded rotation spectrum of the optically activ e crystal. it is shown that the spectrogram recorded contains information a bout the angle of rotation and the value of the induced dichroism. A new me thod of determining the dichroism and its dispersion is suggested based on the study of the spectrogram in white light using a pair of polaroids with different crossing angles.