optically active substance
61Quartz — This article is about the mineral. For other uses, see Quartz (disambiguation). Quartz Quartz crystal cluster from Tibet General Category …
62Silicon — Not to be confused with the silicon containing synthetic polymer silicone. aluminium ← silicon → phosphorus C ↑ Si ↓ Ge …
63Optical 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… …
64carbohydrate — /kahr boh huy drayt, beuh /, n. any of a class of organic compounds that are polyhydroxy aldehydes or polyhydroxy ketones, or change to such substances on simple chemical transformations, as hydrolysis, oxidation, or reduction, and that form the… …
65polarization — /poh leuhr euh zay sheuhn/, n. 1. a sharp division, as of a population or group, into opposing factions. 2. Optics. a state, or the production of a state, in which rays of light or similar radiation exhibit different properties in different… …
66optical activity — noun a) a property caused by asymmetrical molecular or crystal structure that enables a compound or crystal to rotate the plane of incident polarized …
67Quebrachitol — IUPAC name (1R,2S,4S,5R) 6 methoxycyclohexane 1,2,3,4,5 pentol …
68Van't Hoff , Jacobus Henricus — (1852–1911) Dutch theoretical chemist Van t Hoff was born at Rotterdam in the Netherlands, the son of a physician. He studied at Delft Polytechnic and the University of Leiden before going abroad to work with August Kekulé in Bonn (1872) and with …
69Laser diode — Top: a packaged laser diode shown with a penny for scale. Bottom: the laser diode chip is removed from the above package and placed on the eye of a needle for scale …
70photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
