Eye - Evolution. 1  Photoreception is phylogenetically very old, with various theories of phylogenesis. [26] 2  Eyes in various animals show adaptation to their requirements. 3  The very earliest eyes, called eyespots, were simple patches of photoreceptor protein in unicellular animals.
Synthetic fibers or fibres are the result of extensive research by scientists to improve on naturally occurring animal and plant fibers. In general, synthetic fibers are created by extruding fiber forming materials through spinnerets into air and water, forming a thread.Before synthetic fibers were developed, artificially manufactured fibers were made from polymers obtained from petro chemicals. These fibers are called synthetic or artificial fibers.oseph Swan invented the first synthetic fiber in the early 1880s. His fiber was drawn from a cellulose liquid, formed by chemically modifying the fiber contained in tree bark.
Jose Luis Pelaez Inc/Blend Images/Getty Images. Artificial silk refers to synthetic materials such as rayon that blend both natural and man-made fibers. Mimicking much pricier real silk, artificial silk fabric may be used to make a number of garments and is a more budget-friendly substitute for silk.Understanding more about the synthetic fabric allows you to determine when to opt for the artificial variety and when to purchase real silk.urpose. Synthetic silk fabrics often blend with other textiles, including cotton, wool and even real silk. Artificial silk -- both alone and as a woven blend -- is a popular material in fashion.