Light refraction in raindrops causes the red color to appear at the bottom and blue at the top due to the bending of light. However, when observing a rainbow, the red color is seen at the top and blue at the bottom, creating an apparent inversion. This phenomenon occurs because the light is refracted and reflected within the raindrop, resulting in an inverted image of the outside world. Observing a raindrop on a window can illustrate this effect, as it shows the inverted colors. Understanding this optical behavior clarifies the relationship between light refraction and the appearance of rainbows.
