Sinha: Hidden Strength of the Classical Simultaneous Contrast Illusion Pawan Sinha MIT, USA (© 2006 Pawan Sinha) Sinha: Hidden Strength of the Classical Simultaneous Contrast Illusion, 5.4 out of 10 based on 82 ratings adminSinha: Hidden Strength of the Classical Simultaneous Contrast Illusion05.08.2006