{HEAD ~ The surface portions} are transparent, scatter or reflect incident light or diffract {TAIL ~ the incident light} at microscopic relief structures  
diffract
{ HEAD ~ The surface portions } are transparent , scatter or reflect incident light or diffract { TAIL ~ the incident light } at microscopic relief structures
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH