New Delhi, July 31 -- Have you ever looked at a picture and seen two completely different things? If yes, you've experienced an optical illusion-a visual puzzle where what you see isn't always what's really there.

One of the most famous examples in the above image is the Rubin Vase, where your brain flips between seeing a vase or two faces in profile. But this is just one of many illusions that reveal how our minds work.

Optical illusions are images that trick the brain. They cause us to perceive something that doesn't match the actual physical reality. These illusions happen because our brains are constantly trying to interpret what our eyes see-and sometimes, they guess wrong or flip between equally valid options.

The Rubin Vase-also...