Light can be described as a flow of energy. The transmission of light energy can be described by various theories. In particular, the luminous flux can be considered as an oscillatory process.
You can understand light as a kind of electromagnetic radiation and compare it with radio waves, but the light waves are much shorter. Light is defined as electromagnetic radiation that the human eye can pick up, as well as rays that the human eye cannot see. Light energy is a physical quantity, one of the main light photometric quantities. It characterizes the ability of energy carried by light to cause visual sensations in a person.
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.