A mind-boggling optical illusion can trick the brain into thinking a static black hole is expanding, researchers have shown. This 'expanding hole' illusion, which is new to science, has been created by Professor Akiyoshi Kitaoka, a psychologist at Ritsumeikan University in Kobe, . In tests, 86 per cent of volunteers perceived the central black hole to be expanding, as if moving into a dark environment like a tunnel, or falling into a hole.
Load More
Load More