This optical illusion will blow your mind. ... What is the Refraction of Light? When a ray of light passes from one medium to another with different densities, it bends i.e. changes directions.

A Refraction Illusion occurs when light bends as it passes through different mediums, such as water, glass, or air layers of varying densities.

FARGO — Rainbows, halos, sun dogs, light pillars and other so-called optical illusions are just that ... illusions. They are not actually there. You can never get to the end of the rainbow. You ...

One of the most admired meteorological phenomena, rainbows are formed through a process called refraction. When sunlight passes through water droplets in the air – whether from rain, mist or ...

Instead, they’re optical illusions that form from two different air densities refracting light in different ways, explains Bryce St. Clair, an optometrist at Johns Hopkins University.