An optical illusion (also called a visual illusion) is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a perception that does not tally with a physical measurement of the stimulus source. There are three main types: literal optical illusions that create images that are different from the objects that make them, physiological ones that are the effects on the eyes and brain of excessive stimulation of a specific type (brightness, colour, size, position, tilt, movement), and cognitive illusions, the result of unconscious inferences. (Wikipedia)
Spinning Wheel Illusion - Picture
Stare at one of the 5 wheels. It will appear to be motionless but the other four will seem as though they are turning. Whichever one you stare at will appear to suddenly stop spinning. In reality - none of the wheels are turning at all.
The optical illusion picture below have been collected actually from one of the slider adds of Bidvertiser Adds that was shown today here in my blog and caught my attention and made me think of sharing this with you. Now, try to answer poll below and know the majority of the answers.