How Do Rainbows Form?

The video explains how rainbows are formed using sunlight, water, and the observer's position. Sunlight, containing all visible colors, refracts when passing through water droplets, causing different colors to exit at varying angles. This dispersion allows us to see individual colors. Rainbows are visible when sunlight is behind the observer and low in the sky, with each raindrop refracting a specific color to the observer's eye. Although rainbows form a full circle, the ground usually obstructs the lower half, making only the arc visible. In rare conditions, a full circular rainbow can be seen from high altitudes.

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