“…even if (the Photograph) is attached to more lasting supports, it is still mortal: like a living organism, it is born on the level of the sprouting silver grains, it flourishes a moment, then ages... Attacked by light, by humidity, it fades, weakens, vanishes; there is nothing left to do but throw it away. Earlier societies managed so that memory, the substitute for life, was eternal and that at least the thing which spoke Death should itself be immortal: this was the Monument. But by making the (mortal) Photograph into the general and somehow natural witness of "what has been," modern society has renounced the Monument.”
Roland Barthes, Camera Lucida
“An organic light-emitting diode (OLED), also known as organic electroluminescent (organic EL) diode, is a type of light-emitting diode (LED) in which the emissive electroluminescent layer is an organic compound film that emits light in response to an electric current...An OLED display works without a backlight because it emits its own visible light. Thus, it can display deep black levels and can be thinner and lighter than a liquid crystal display (LCD). In low ambient light conditions (such as a dark room), an OLED screen can achieve a higher contrast ratio than an LCD, regardless of whether the LCD uses cold cathode fluorescent lamps or an LED backlight.”
OLED: Wikipedia Entry
https://en.wikipedia.org/wiki/OLED
“Whatever one’s philosophical inclination, light is intrinsic to our physical and spiritual selves. It gives us the power of vision so that looking and consequent 'seeing’ is possible. Because the evolution of human intelligence is primarily based on information we have gathered through vision, light has come to mean illumination and enlightenment, a possession of the mind. Not only does it reveal what is around us, it also makes known that which is inside us.”
Lynn M. Herbert Spirit and Light and the Immensity Within, 1998