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It is shown that an orientation factor can be derived from the dichroism of dyed fibres. Orientation factors, of certain regenerated cellulose fibres, derived by different methods are compared. Values are quoted for the orientation factors of the same fibres derived from polarised fluorescence, dichroism, birefringence, X–rays, and swelling anisotropy.
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Preston et al. (1950) studied this question.
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