Green optical illusion place mat
This special plastic sheet shows two optical illusions. Firstly, if you stare at the small cross in the centre, and move the mat towards and away from you, the circles appear to move in opposite directions. Secondly, the flat mat appears to be printed as a 3D mat: the 30mm border around the edges of the mat seem closest to the viewer, then comes the circular design in the centre of the mat, and further away still is the rest of the mat. It’s all very confusing! The concept is Copyright Paul Baars Design, Amsterdam. There are four place mats in this series – see also N2236, N2237 and N2239.