title: Abnormal dispersion of refractive index of purple membranes in an aqueous medium.
abstract: The refractive index of purple membranes in a water suspension has been measured refractometrically in the visible range of the spectrum. A region of anomalous dispersion has been found, due to a strong absorption by the retinal residue in bacteriorhodopsin macromolecules.
authors.affiliation: Institute of Physical Chemistry, Bulgarian Academy of Science, 1113 Sofia, Bulgaria. zhivkov_ipc@doctor.bg
authors.forename: Alexandar Metodiev
authors.initials: AM
authors.lastname: Zhivkov
mesh_terms: D008027:Light; D018717:Purple Membrane / Q000737:chemistry* / Q000000981:diagnostic imaging*; D012031:Refractometry; D012542:Scattering, Radiation; D012996:Solutions; D014463:Ultrasonography; D014867:Water / Q000737:chemistry*
chemical_list: D012996:Solutions; D014867:Water