All these various usages have stemmed from analyzing the...

All these various usages have stemmed from analyzing the initial meaning of light: “that which is essentially manifest and makes other things manifest as well.”[^5] Thus, what is initially understood by light is the sensible light that emanates from illuminant objects—such as, the sun, the stars, and man-made lamps—without which the world would be shrouded in darkness. Of course, the essence and definition of light from the standpoint of the physicists is a whole different issue.

They might consider the reality of light as yet unravelled and they might have disagreements regarding it, but what is for certain is that in the material world there does exist something referred to as light that is…