If you look at the reflection of a luminous object in water, you will notice that it is less bright than the object itself. What is the reason for this?

The light falling on the surface of the water is not only reflected, but also refracted and absorbed.

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.