What natural phenomena based on the refraction of light?

Natural phenomena based on the refraction of light include rainbows, which occur when sunlight passes through raindrops, bending and splitting into a spectrum of colors. Another example is the shimmering effect seen in hot pavement on sunny days, where light refracts through layers of hot air. Additionally, mirages, commonly seen in deserts, arise from the refraction of light in varying temperature gradients of air. These optical effects highlight the interplay between light and atmospheric conditions.