[post_page_title]The shimmering road[/post_page_title]
This is maybe one of the most well-known types of optical illusion: a mirage. Specifically, this is an example of a type of ‘inferior mirage’ called ‘heat haze.’ This type of mirage occurs when we view objects through a mass of heated air.
It’s very common when looking across asphalt concrete (also known as tarmac) roads and desert sand. Light from the sky makes it look as if the sky is refracted, making it appear as if the sky is reflected in the street. The brain interprets this as a pool of water, since water also reflects the sky.
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