Translation: from english

optical brighteners

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  • optical brighteners —    Material contained in laundry detergents to make ‘whites whiter’ and used in environmental tracing studies. Common types are, Tinopal CBS X, Tinopal 5BM GX, and Phorwite BBH Pure. Dye type: Stilbene.    See also fluorescent dyes …   Lexicon of Cave and Karst Terminology

  • Optical brightener — Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs) or fluorescent whitening agents (FWAs) are dyes that absorb light in the ultraviolet and violet region (usually 340 370 nm) of the electromagnetic… …   Wikipedia

  • soap and detergent — ▪ chemical compound Introduction       substances that, when dissolved in water, possess the ability to remove dirt (detergent) from surfaces such as the human skin, textiles, and other solids. The seemingly simple process of cleaning a soiled… …   Universalium

  • dye — dyable, dyeable, adj. dyer, n. /duy/, n., v., dyed, dyeing. n. 1. a coloring material or matter. 2. a liquid containing coloring matter, for imparting a particular hue to cloth, paper, etc. 3. color or hue, esp. as produced by dyeing. 4. of the… …   Universalium

  • Chromism — In chemistry, chromism is a process that induces a change, often reversible, in the colors of compounds. In most cases, chromism is based on a change in the electron states of molecules, especially the π or d electron state, so this phenomenon is …   Wikipedia

  • Invisible ink — Invisible ink, also known as security ink, is a substance used for writing, which is invisible either on application or soon thereafter, and which later on can be made visible by some means. Invisible ink is one form of steganography, and it has… …   Wikipedia

  • Army Combat Uniform — The Army Combat Uniform (ACU) is the current combat uniform worn by the United States Army. It is the successor to the Battle Dress Uniform (BDU) and Desert Camouflage Uniform (DCU) worn during the 1980s and 1990s. [… …   Wikipedia

  • luminescence — luminescent, adj. /looh meuh nes euhns/, n. 1. the emission of light not caused by incandescence and occurring at a temperature below that of incandescent bodies. 2. the light produced by such an emission. [1885 90; < L lumin (see LUMEN) +… …   Universalium

  • Camouflage — This article is about protective coloration. For other uses, see Camouflage (disambiguation). Further information: Theory of camouflage A flounder blending in with the gravel on the sea floor. Camouflage is a method of crypsis (hiding). It allows …   Wikipedia

  • Metamerism (color) — This article is about metamerism as it relates to colorimetry. For other meanings see the disambiguation page. In colorimetry, metamerism is the matching of apparent color of objects with different spectral power distributions. Colors that match… …   Wikipedia

  • Photographic paper — This article is about light sensitive photographic media. For digital printing media, see Photo printer and Inkjet paper. Photographic paper is paper coated with light sensitive chemicals, used for making photographic prints. Photographic paper… …   Wikipedia

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