In a light beam propagating in a room, one can observe dust particles, and some dust particles seem to disappear from time to time, why?
August 30, 2020 | Education|
Light reflected from a speck of dust does not enter the observer’s eyes.
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.