Rainbows do not have a physical endpoint where they touch the ground. A rainbow is an optical phenomenon caused by the refraction, dispersion, and reflection of sunlight in water droplets. This process bends the light, separating it into its different colors and forming a circular arc. However, a rainbow’s appearance depends entirely on the position of the observer relative to the sun and rain, making it impossible to physically reach its end.
Rainbows are actually full circles, but we usually see only a semicircle because the ground obstructs the lower part. If you were in an airplane or on a high mountain, you might be able to see a complete circular rainbow. When viewed from the ground, it may appear that the rainbow touches a distant point on the horizon, but this is an illusion. If you were to travel to that location, the rainbow would shift further away because its position changes with your perspective.
This shifting nature of rainbows explains why the idea of finding a “pot of gold” at the rainbow’s end is purely mythical. Since rainbows do not have a fixed location, they do not have an actual endpoint that can be reached.
