The rainbow can be seen with your back to the sun. What conclusion can be drawn from this?

A rainbow arises not only due to dispersion during refraction of light in water crumbs, but also because it is reflected on their surfaces.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.