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Created by L.A. Necker in 1832
Where is the green side ? On the front of the cube or at the back ? Keep looking at the cube and you'll find that it switches a few times. First described by professor L. Necker who noticed this while studying drawings of crystals.
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sK8er - Friday 15 July 2011
Meryq - Sunday 4 December 2011
Oh man, now I see it. I should introduce this sight to my friends. They'd love to see this.