Editing Shadow (section)

== Color ==
Visual artists are usually very aware of colored light emitted or reflected from several sources, which can generate complex multicolored shadows. [[Chiaroscuro]], [[sfumato]], and [[silhouette]] are examples of artistic techniques which make deliberate use of shadow effects.<ref>{{Cite book |last=Maughan |first=William |url=https://books.google.com/books?id=1Wjz1d3zs7oC |title=The Artist's Complete Guide to Drawing the Head |date=14 August 2013 |publisher=Clarkson Potter/Ten Speed |isbn=978-0-7704-3473-1 |language=en}}</ref>

During the daytime, a shadow cast by an opaque object illuminated by sunlight has a bluish tinge. This happens because of [[Rayleigh scattering]], the same property that causes the sky to appear blue. The opaque object is able to block the light of the sun, but not the ambient light of the sky which is blue as the atmosphere molecules scatter blue light more effectively. As a result, the shadow appears bluish.<ref>[http://www.pa.uky.edu/sciworks/qlight.htm Question Board – Questions about Light]. Pa.uky.edu. Retrieved on 26 April 2013.</ref>