Grow You Own Magic Mushroom optical illusion

This is an amusing way of dressing up the optical effect when a person stares at the centre of a rotating spiral disc for 20 seconds or so. When the person then looks at the magic mushroom, it appears to grow or shrink, depending on which way the spiral was rotated. Made in China for Worldwide co, npw.co.uk.

Details

Size Size of the display card is 180 x 240mm.
Date Circa 2010
Organisations
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Category
Ref no N1643