Incredible optical illusion sees pink rainbow light up sky

Pink rainbows were spotted lighting up the skies above various parts of the UK on Monday evening. The rare sight was clearest in the south west of England, where people

Mirage, Desert, Refraction, Mirage

The Edgeless & Ever-Shifting Gradient: An Encyclopaedic and Evolving Spectrum of Gradient Knowledge

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Optical Illusions

The Quietus, Features, Books

First look at Bristol Light Festival including optical illusion mirrors and light-up swings - Bristol Live

How does the mind work when seeing optical illusions? - Quora

Pink Rainbow Lights Up the England Sky

What Do Rainbows Mean?