How can you tell that you are in the shadow area; penumbra?
| September 24, 2020 | Education
From the shadow area, the source is not visible at all, and from the penumbra area, the light source is partially visible.
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.