When we think of sight and seeing, it's normal not to think too much about it. That it's just part of being human and having this body. However it is quite a complicated process. And it starts with light. Without a light source, we can't 'see' anything. The light waves travelling from a source whether its the sun, a light bulb or a screen, are crucial for us to 'see' our environment. It is the light waves travelling, elementary particles called photons, moving in every direct