When layers of air at different temperatures cause light rays to bend, a mirage occurs and the blue sky appears as a pool of water.

Mirages have a reputation for deceit. The classic example is the oasis in the desert. Or there’s the obstructed view of the iceberg that may have confused the Titanic’s captain. The legendary ghost ship, the Flying Dutchman, is also a mirage. But what is a mirage? And are the images that dance on hot roads, stretches of desert, and the sea surface really figments of the imagination, or are they images of real things?

The answer lies in the way the eye interprets the bending light that produces these images.

Source link