Bibliography

Calderwood, Jan. "Sketching Lesson Six - Shading Different Forms." Web log post. Jan's Art Tips. Blogger.com, Feb. 2013. Web. 23 Nov. 2014.

Netting, Ruth. "Visible Light Waves." Visible Light Waves. National Aeronautics and Space Administration, 27 Mar. 2007. Web. 23 Nov. 2014.

"The Physics of Drawing- Light Waves and Colors." Web log post. APlusPhysics Community. APlusPhysics, 22 Apr. 2013. Web. 23 Nov. 2014.

Pemberton, Lou. "Pencil Drawing Techniques." How To Draw. MyThemeShop, 2013. Web. 23 Nov. 2014.

Shlain, Leonard. Art & Physics: Parallel Visions in Space, Time, and Light. New York: Morrow, 1991. Winc.edu. Web. 22 Nov. 2014.

Intro