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What is "Chaff" - Definition & Explanation

A component in cotton of trash (q.v.) in the form of a heterogeneous assortment of vegetable fragments, most of them being small pieces of leaf, leaf bract (a small form of leaf growing beneath the boll) and stalk. "Broken fragments of twig and small branches, particularly when brittle, may be broken up further in ginning and are then also regarded as "chaff". Another component of chaff is the silvery lining of the boll interior, sometimes termed "shale", particularly the partitions dividing the locules before the boll opens."
Lightweight reflecting material, typically consisting of aluminum foil strips or metal-coated fibers, that is released in the atmosphere to produce radar echoes. Initially developed as a military countermeasure, chaff is used in meteorological research to enable tracking of air motions in conditions with no natural airborne scatterers or to provide stronger echoes than those from natural scatterers.

Some other terms

Some more terms:

A length of yarn on the surface of a woven fabric between two consecutive intersections of the yarn with the yarns woven at right angles to it. NOTE: A float is designated by the number of threads...
A method of producing nonwoven fabric in a continuous process. Polymer is extruded through a spinneret and the resulting filaments are cooled and laid down in a web along a continuous conveyor belt....
A woven fabric construction made by interlacing two or more sets of warp yarns with two or more sets of filling yarns. The most common double weave fabrics are made using a total of either four or...
A general term to describe fabrics with a blister (pucker) on the surface. The blister may be created by several different methods such as printing with caustic soda or other chemicals, by weaving...
A system of measuring the weight of a continuous filament fiber. In the United States, this measurement is used to number all manufactured fibers (both filament and staple), and silk, but excludes...

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