Light Bulb Afterglow
Illusion #44 : Stare at the light bulb for 60 seconds and then click the image. Can you see the light bulb glowing?
Optical illusions are often images that differ from reality - the eyes and brain 'see' something that doesn't quite match. Optical illusions can work in numerous ways, for example straight lines can appear to bend, colours can give the impression of movement where the image is perfectly still, perspective can be forced, etc.