The optical effect of the arrow that always points to the right

in #steemit3 years ago


An ambiguous object printed in 3D that (seen from the right point of view) looks like an arrow that always points to the right, even if it turns 180 °. It is a design by the mathematician Kokichi Sugihara of the Meiji University in Japan.

For the arrow to point to the left you have to use a mirror :)


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