Light Rays:

A thin shaft of light, like that which passes from the Sun via a pin-hole in a piece of cardboard, can be termed as a ray or beam of light. In a more technical logic, a ray is the path which an individual photon (i.e., light particle) follows via space, glass, air, water, or other medium.

The visible light contains properties both particle-like and wavelike. This duality has long been a matter of interest between physicists. In some circumstances, the particle model or corpuscular model elucidates light behavior very well, and the wave model falls small. In other scenarios, the reverse is true. No one has really seen a ray of light; all we can view are the effects generated whenever a ray of light hits something. Though, there are certain things we can say about the manner in which rays of light act. Such things are expected, both quantitatively and qualitatively.