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"Reverse perspective is a visual illusion of movement in a static picture. 
As fine art works, reverse perspectives are sold by Patrick Hughes"

The Exploratorium used to carry these devices but hasn't for years. From 
time to time I've contacted the distributor. He offers some hope but nothing 
happens. Has anyone had better luck?

          Wayne T. Watson (Watson Adventures, Prop., Nevada City, CA)
              (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
               Obz Site:  39° 15' 7" N, 121° 2' 32" W, 2700 feet

                "He who laughs, lasts." -- Mary Pettibone Poole
-- 

                     Web Page: <home.earthlink.net/~mtnviews>

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