Light is a radiant electromagnetic energy that can be perceived by the human eye. It is the spectrum of electromagnetic radiation. Light has a finite speed and propagates in a straight line. Some passages of the Bible mentions the light, for example in the creation, according to the book of Genesis, God said: "Be light, and the light was made " , and God saw that the light was good, and he separated the light from the darkness... (Genesis 1, 3 41.
