Optical illusions: What colour are the circles? The mind-blowing picture that has gone vir

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A mind-blowing optical illusion has got people questioning their own eyes. The picture, which was created by David Novice, a computer and information science engineer, has gone viral on Twitter as people are confused by what they can see.The image shows 12 circles with multi-coloured horizontal stripes. At first glance, the circles appear red, purple and green. However, when focusing the 12 circles are actually all the same light brown colour.Sharing the image, David Novice wrote: “A three-color confetti illusion with spheres, which appear to be yellowish, reddish, and purpleish but in fact have exactly the same light-brown base color.”

He also added that shrinking the image would result in an increase in the effect, making it harder for viewers to see the true colour of the circles.

Users of the social media site flocked to comment on the image, as they expressed their confusion.

“This is fantastic. I truly cannot believe my eyes,” one wrote.

“This is great…our brains are incredible! I couldn’t quite believe it, so I made this little gif to help,” another said.

“Awesome,” another said.

Dumbfounded, others asked for David to explain why the brown circles appeared differently when first looking, to which he responded: “As explained by @generuso, Munker-Wihite and similar illusions work because the acuity of vision of color is not as great as the acuity of vision of form.”

Optical illusions involve visual deception. Due to the arrangement of images, effect of colors, impact of light source or other variable, a wide range of misleading visual effects can be seen from a photo.

Not everyone experiences visual images in the same way and according to www.verywellmind.com this reveals a lot about the working of the brain.

Some people may simply be unable to see the effect altogether, which was actually the case with this particular image.

One user commented that his nine-year-old child could see straight away that the circles were brown, while he struggled.

Responding to this query, David joked: “I really don’t know. Maybe she’s not as easily fooled! I note that I’m a human-computer interaction researcher rather than an expert in perception.”

Another optical illusion recently went viral on social media.

An image of a car door was mistaken for a night time beach scene.

Sharing the photo, one Twitter user who goes by the name “nxyxm” explained: “If you can see a beach, ocean sky, rocks and stars then you are an artist, But its not a painting, it’s a lower part of the car gate which needs to be repaired.”

He added: “Focus on dark side you will see car gate thanks. It’s a car door, the seal panel under it is damaged, the bend in the door gives illusion of beach, the seal panel is damaged and scratched which gives illusion of water on the edge of beach.”

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