*3.4.1 Microscopy view*

The textile fibers, particularly the natural ones, have typical longitudinal and cross-sectional shapes and therefore can be identified by viewing them under the optical microscope. This technique cannot be used very successfully in the case of man-made fibers, except for a few because their cross-sections can be modified during production. Typical cross-sectional and longitudinal shapes of some of the fibers are given in the following **Tables 4** and **5**.


#### **Table 4.**

*Microscopic appearances of the natural fibers.*


#### **Table 5.**

*Microscopic appearances of the man-made fibers.*

*Basic Functional Application for Natural Fibers and Types DOI: http://dx.doi.org/10.5772/intechopen.102998*
