The dispersion of light occurs when white light passes through a prism or water droplets in the atmosphere, separating into its component colors. This happens because different wavelengths of light bend by different amounts when refracted. In the case of a rainbow, sunlight enters raindrops, refracts, reflects off the inner surface, and refracts again as it exits. Shorter wavelengths ... https://greenhousecover.com/product/irac-greenhouse-plastic-cover/