Light fall colors

Figure 7.21 Tensile damage zones (light-blue color) as the result of the impact of a 3-in. steel ball falling from a height of 36 in. (see Figs 7.19 and 7.20). A conventional composite board is shown in the left-hand side and the modified board on the right-hand side. See color insert.

Optical Properties. When light falls on a nylon fiber, it can be partially transmitted, absorbed, or reflected, depending on the cross-section shape and the nature of any second substance added during polymerization or melt spinning. Additive-free nylon with a standard round cross section has a translucent high sheen luster. The inherent luster of the fiber and the color introduced in dyeing are important optical properties that relate to a fabric s visual quality and its acceptance by the customer. Fibers that need to be opaque or to cover well in... 

Fig. 5.95 Free fall TLCP strands are shown in polished sections in circularly polarized light (A) (color section) and also by SEM of fractures (B, C). The less oriented strand appears more u orm in domain texture and also exhibits a coarser woody fracture (B). Some orientation is observed in the more highly oriented strand (A) and the fracture morphology is more uniform (C).

The drop in the PSNR values can be explained by the fact that while the light amount is greater than before, the shift is not performed towards very bright conditions which can be compared to a sunny day, but rather twilight conditions. Hence, while the light falls on and by that adds more information and color to the scene, homogeneous dark regions that were not seen before are now visible and subject to noise occurrence. 

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