The Stephens/Sprinkle Effect Posted on June 12, 2016June 12, 2016 by E.A.R.T.H. Lab The Stephens/Sprinkle Effect Sculpture by Stephens & Sprinkle, 2007. Elizabeth Stephens' stainless steel speculum box with manipulated and colorized clips of Marcel Duchamp’s "Roto Relief" films inside. Looking into the lips of the speculum can create a mesmerizing effect. http://anniesprinkle.org/lal-vid/duchamp1.mp4 Posted in yellow year.