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The Spacing of Scales for Assessing the Effect on the Pattern in Fastness Testing
Author(s) -
Mclaren K.
Publication year - 1952
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1952.tb02764.x
Subject(s) - scale (ratio) , grey scale , statistics , mathematics , computer science , artificial intelligence , geography , cartography
The spacing of the first grey scales considered for assessing loss in depth in fastness testing has been found to be unsatisfactory, a8 the resulting assessments do not reveal the small but important differenoes between patterns of good fastness; this defect is inherent in all equally spaced scales. It is shown that satisfactory results are obtained when the scales are spaced geometrically. Four geometric grey scales have been prepared and sent on behalf of the International Standards Organisation to the Fmtness Tests Committees of France, Germany, Switzerland, and the U.S.A. in the hope that agreement on the spacing may he achieved.