Necker Island (British Virgin Islands) world, the challenge begins at the annual Consumer Electronics Show in Las Vegas with the top 10 new innovations progressing to the finals at Necker Island where Branson joins the judging panel along with technology figures and investors from Silicon Valley. The Necker Cup, an exhibition tennis tournament held at the end of the tennis season, has been held on the island annually since 2012. In February 2017, former U.S. President Barack Obama and his wife Michelle visited Necker as guests of Sir Richard Branson. On August 22, 2011, The Great House burned down in a blaze believed to be
Necker cube Necker cube The Necker cube is an optical illusion first published as a rhomboid in 1832 by Swiss crystallographer Louis Albert Necker. It is a simple wire-frame drawing of a cube with no visual cues as to its orientation, so it can be interpreted to have either the lower-left or the upper-right square as its front side. The Necker cube is an ambiguous line drawing. The effect is interesting because each part of the picture is ambiguous by itself, yet the human visual system picks an interpretation of each part that makes the whole consistent. The Necker cube is sometimes