For example, I look towards the roof of a black car on a sunny day. The background has enough contrast to notice that the light looks wavy from the radiated heat coming from the roof.
How does light get bent by the heat?
In: Physics
Why does light bend? Light goes through different mediums at different speeds. The light bends as it enters then new medium when it hits it at an angle. Imagine a car driving off the edge of a road onto the shoulder. You feel the car pull toward the shoulder because the tire is going slower in the gravel. Light which has the property of waves has one edge hit the glass (or warm air) at an angle and it bends at the boundary area.
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