Cooperation factor: In facsimile systems, the product of the total scanning length and the scanning density, given by CF = L σ, where L is the scanning line length[?] and σ is the scanning line density, both in compatible units.
Note: For example, a 20-cm line and a line density of 6 scanning pitches per centimeter would yield a cooperation factor of 120.
... style of jazz and the popularization of dancing that accompanied it. Called garconne in French, flapper style made them look young and boyish. The short "bob" haircut ...