It starts with a single drop of water. As visible light passes through the drop, the light is refracted as through a prism, split into its component wavelengths and reflected back to the eye. Multiplied by thousands of drops in the sky, an arc of red, orange, yellow, green, blue, indigo and purple emerges as if by magic. Rainbows…mystical, splendiferous, mind-bending. Continue reading
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