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Rubik's Cube with 30+ answers. ErnÅ Rubik, Hungarian architect and designer, invented the Rubik's Cube in 1974. The story behind it is fascinating. He was curious to see if he could design a box that could twist and turn about itself.
The Necker cube: a wire frame cube with no depth cues. The Necker cube is an optical illusion first published as a rhomboid in 1832 by Swiss crystallographer Louis Albert Necker. rotating Necker cube was used to demonstrate that the human visual system can recruit new visual cues that affect the way things look. A doctored photograph purporting to be of an impossible cube was published in the June 1966 issue of Scientific American, where it was called a Freemish Crate.