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A rainbow has seven colors because water droplets in the atmosphere break sunlight into seven colors. A prism similarly divides light into seven colors. ... This is called refraction.
A rainbow has seven colors because water droplets in the atmosphere break sunlight into seven colors. A prism similarly divides light into seven colors. When light leaves one medium and enters another, the light changes its propagation direction and bends.
The reason why the rainbow has 7 colors. The possibility of synthesizing the color by means of additive and subtractive mixing. The existence of non-physical colors, such as white and magenta. The existence of different ways of interpreting color according to the species.
Rainbow forms by the dispersion of white light, white light consists of seven colors or we can say it's the visible region. We can't say other wavelengths