While walking in the middle of a very hot day, buildings, roads, and the car will look bumpy. Why is that?
On a very hot day when it happens refraction of light from objects that we see eye to us through different media. As a result, the object is only visible wavy in our eyes.
How can the object light is refracted through a different medium? Though there is only air between the object and our eyes?
Yes, it is only hot air, but the heat also varies, depending on the heat given up by the earth to the air. This temperature difference was also affecting the refraction of light through it.
As a result, the object of light that passes through the air with different temperatures will be refracted at an angle that is different also, so it looks grooved by our eyes.
So how can these objects appear wavy?
Do not forget that hot air tends to rise to the top. Which occurs in the air in front of us is the transfer of heat and cool air. Hot air rises and is replaced by cool air.
Then, there is another hot air rises cool air replaces it. And so on. The pattern of heat-cool-heat is what makes the light received by our eyes refracted with alternating angles, so it looks wavy in our eyes.
Written By : Arbha ~ Public-DYK
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