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Microscopic Characteristics of Common Fibers. Natural fiber, will vary under magnification Twist characteristic of cotton only. Cotton. Thin, delicate fiber Crossover indentations. Silk. Thickness varies depending on species of animal wool taken from Same microscopic structure as hair
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Natural fiber, will vary under magnification • Twist characteristic of cotton only Cotton
Thin, delicate fiber • Crossover indentations Silk
Thickness varies depending on species of animal wool taken from • Same microscopic structure as hair • medulla – channel running down center • cuticle – outer layer • cortex – inner layer Wool
Synthetic fiber, little variation under magnification • Appearance will vary by manufacturer • Created to imitate silk macroscopically Nylon
Synthetic fiber, little variation under magnification • Appearance will vary by manufacturer • Created to imitate cotton macroscopically Polyester