When and where mirage is seen

1.	When and where mirage is seen
Answer» happen when the ground is very hot and the air is cool. The hot ground WARMS a layer of air just above the ground. When the light moves through the COLD air and into the layer of hot air it is refracted (BENT). A layer of very WARM air near the ground refracts the light from the SKY nearly into a U-shaped bend

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