Wordie [wûrd • ē]
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first listed by:
bearfax (302 words)
appears in these lists:
Tuesday words, by slumry
Redundancing, by whichbe
wendell berry, by brtom
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A unit of area for measuring the reaction cross-section (generally different from the geometric cross-section) of atomic nuclei and subatomic particles in the study of their interactions with other nuclei or particles. A barn is equal to 10 to 24 square cm. The name, coined by U.S. scientists, is derived from the phrase "side of a barn"--something easy to hit.