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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:

100% worsted. If it is just called tropical, it can be made up in any fiber or blends of wool and synthetics. It has a plain and open weave. The yarns are tightly twisted and woven to permit a free...
refers to a process in the manufacture of cotton and other staple yarns. The fiber is combed to remove foreign matter and the shorter, undesirable fibers, leaving longer, more desirable fibers that...
A method of printing by passing the fabric over metal rollers on which the design has been engraved. One roller is used for each color. Used for printing long runs with good register and a clear,...
Dyes for cotton and other cellulosic fibres that are based on suphur chemistry. Can be difficult to achieve top fastness performance but good results possible from selected dyes. Application method...
A stiff-finished heavily sized fabric of cotton or linen used for interlinings in garments, for stiffening in millinery, and in bookbinding. Softens with heat. Can be shaped while warm. Name from...

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