To separate out the chaff, early cultures tossed baskets of grain into the air and let the wind blow away the lighter chaff.
Loose material dropped from aircraft specifically to interfere with radar detection
Fragments of straw including the glume and hull removed from cereal grains in threshing or processing
Small strips of metal foil, usually dropped in large quantities from aircraft or balloons Chaff typically produces a radar echo which closely resembles precipitation Chaff drops once were conducted by the military in order to confuse enemy radar, but now are conducted mainly for radar testing and calibration purposes
The glumes or husks of grains and grasses separated from the seed by threshing and winnowing, etc
foil in thin strips; ejected into the air as a radar countermeasure material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds
Anything of a comparatively light and worthless character; the refuse part of anything
{i} husks separated from grains; straw that has been cut up for animal feed; something worthless, refuse; teasing, joking; (Airplanes) metal scraps released from an airplane in order to disrupt signals from radar-guided weapons
By extension, any excess or unwanted material, resource, or person; anything worthless
The scales or bracts on the receptacle, which subtend each flower in the heads of many Compositæ, as the sunflower
material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds