How Do We Perceive Lighting
The Importance of Light and Vision Man is dependent on light for most of his life. Without light no life on earth is possible. Man has five senses of which vision is recognized as the most important link with our surroundings. Seeing is possible only due to the presence of light; the natural sunlight,sunlight reflected by the moon and artificial light. We say the lighting is good ,when our eyes can clearly and pleasantly perceive the things around us. Thus lighting should be both functional and pleasant to be effective. The principal criteria on which every lighting installation should be judged ,based on the function of the lighted space or area with regard to visual perception are: * the lighting level * the luminance or brightness in the field of view * the freedom from glare * light directionality and shadows * light colour,colour appearance and colour rendering you have to add aesthetic quality to define the lighting quality. Lighting Level Deciding on the ...