If a glass prism is placed in the path of a beam of white light, after refraction of light, a multi-colored strip appears – a spectrum. What happens if a second glass prism is placed in the path of light refracted by a prism, “inverted” with respect to the first?
After refraction in the second prism, the light beam will turn white again.
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.