User:Eldiaar/Parallel rays

Generally the light rays travel in the form of waves as rays, and a single ray, from the point of its source, for example a squire shaped light emitting object will send rays in millions and let us have it as point from which a single light ray starts, travels straight on front, and from the same point, several rays start traveling on all the directions even at the open space, not like the sound, which, only when travels through a pipe, is straight till the end, and spreads over all the directions when it comes out the pipe, and the light rays never bend, until otherwise they are made to, by some mediums like water or lenses through which they travel. The light emitting source will have millions of points, so millions of rays travel from those points straight on all directions. All the rays from all the points traveling straight on same direction will go straight and never meet. These rays traveling on same direction, as they never meet, travel parallel and they are called parallel rays. We can not see an abject with parallel rays, because we see things only when the rays from them are meeting when they reach our eyes.