What is the essence of the phenomenon of optical enlightenment?

When light passes through a thin film, there is an interference of rays reflected from the top and bottom surfaces of the film. The thickness of the film is selected in such a way that as a result of the interference a minimum in reflected light and a maximum in transmitted light are obtained.

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.