What is an Optical Illusion? An optical illusion is a visual phenomenon where the brain misinterprets what the eyes see.

New Delhi: In a development that has stirred the mathematical world, two researchers have taken a route to unlock hidden patterns in prime numbers – one that blends old wisdom with unexpected tools.

Optical illusions are a great tool to test your visual powers. Are you someone who enjoys tricky puzzles and visual brain games? Then optical illusions are your best friends. These illusions with ...