Optical rotatory dispersion

Optical rotatory dispersion

Optical rotatory dispersion is the variation in the optical rotation of a substance with a change in the wavelength of light. Optical rotatory dispersion can be used to find the absolute configuration of metal complexes. For example, when plane-polarized white light from an overhead projector is passed through a cylinder of sucrose solution, a spiral rainbow is observed perpendicular to the cylinder.[citation needed]

When white light passes through a polarizer, the extent of rotation of light depends on its wavelength. Short wavelengths are rotated more than longer wavelengths. Because the wavelength of light determines its color, the variation of color with distance through the tube is observed.[citation needed] This dependence of specific rotation on wavelength is called optical rotatory dispersion.

See also

Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • optical rotatory dispersion — noun the variation in the optical rotation of a substance with the wavelength of light …   Wiktionary

  • rotatory dispersion — noun : the production of colors that results from passing white light through an optically active substance (as quartz) that causes the amount of optical rotation to vary with the wavelength …   Useful english dictionary

  • Optical rotation — (optical activity) is the turning of the plane of linearly polarized light about the direction of motion as the light travels through certain materials. It occurs in solutions of chiral molecules such as sucrose (sugar), solids with rotated… …   Wikipedia

  • ORD — • optical rotatory dispersion; • oral radiation death …   Dictionary of medical acronyms & abbreviations

  • Aimé Cotton — Aimé Auguste Cotton (9 October 1869 16 April 1951) was a French physicist known for his studies of the interaction of light with chiral molecules. In the absorption bands of these molecules, he discovered large values of optical rotatory… …   Wikipedia

  • Magnetic circular dichroism — (MCD) is the differential absorption of left and right circularly polarized (LCP and RCP) light, induced in a sample by a strong magnetic field oriented parallel to the direction of light propagation. MCD measurements can detect transitions which …   Wikipedia

  • Circular dichroism — (CD) refers to the differential absorption of left and right circularly polarized light.[1][2] This phenomenon was discovered by Jean Baptiste Biot, Augustin Fresnel, and Aimé Cotton in the first half of the 19th century.[3] It is exhibited in… …   Wikipedia

  • ORD — Abbreviation for optic rotatory dispersion. * * * optical rotatory dispersion; oral radiation death …   Medical dictionary

  • Cotton effect — The Cotton effect is the characteristic change in optical rotatory dispersion and/or circular dichroism in the vicinity of an absorption band of a substance. In a wavelength region where the light is absorbed, the absolute magnitude of the… …   Wikipedia

  • Eligio Perucca — (?? 1965) was an Italian Physics instructor and researcher at the University of Turin in Italy in the early decades of the twentieth century. He later served a professorship at the nearby Polytechnic University of Turin. He discovered an… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”