Why can you see water when driving on the road in summer?

I believe everyone who drives a car has seen this phenomenon. The reason is simple: the refraction of light. As we all know, when you put chopsticks in a bowl with water, you will see that chopsticks are bent, which is why. In summer, the hot asphalt pavement accelerates air convection, and the density becomes smaller, while the air density above it is higher, so the route changes when the light comes from the air, and the refraction path is different at different times, so the effect you see is not the oil path itself. At this time, the light emitted by high objects (such as the sky) is refracted and totally reflected by the air layer, forming an inverted virtual image. You feel that there is water on the road, which is called a mirage. In the past, people saw water in the desert for the same reason.

The same is true of the mirage we often say, except that the sea water is hot and cold, and the air density is getting bigger and bigger from top to bottom, which forms the above opposite refraction. The distant scenery below enters people's sight through atmospheric refraction and total reflection, forming an inverted virtual image, which is a mirage. This phenomenon is called a mirage.