Necker Cube
The Necker cube is an optical illusion first published as a rhomboid in 1832 by Swiss crystallographer Louis Albert Necker.
The Necker cube is an ambiguous line drawing.The effect is interesting b...
Necker Cube - Wikipedia
Ambiguity
Ambiguity is an attribute of any concept, idea, statement or claim whose meaning, intention or interpretation cannot be definitively resolved according to a rule or process consisting of a finite numb...
Ambiguity - Wikipedia