The Physics of Invisibility : A Story of Light and Deception The ability is see is fundamental to our very existence. How true our perceptions really are depends upon many factors and not least is our understanding of what light is and how it interacts with matter. It was said that the camera the icon of light recording instruments never lies and in the day of the glass plate and celluloid roll film this might well have been true. But in this modern era with electronic cameras and computer software it is often safe to assume that the camera always lies. The advertising images that bombard our every waking moment are manipulated in shape profile