Light_Vocabulary


 * ** Accent Lighting: ** lighting that is used to accent or highlight a particular object such as a work of art.




 * ** Candela **: the unit of measurement of luminous intensity (cd) of a light source in a given direction.


 * ** Color Temperature: ** a measure of the color appearance of a light source which helps describe the apparent "warmth" (reddish) or "coolness" (bluish) of that light source.




 * ** LED: ** light emitting diode. A small electronic device that lights up when electricity is passed through it.


 * ** LEED: ** LEED (Leadership in Energy and Environmental Design) is an internationally recognized green building certification system, providing third-party verification that a building or community was designed and built using strategies aimed at improving performance across all the metrics that matter most: energy savings (including lighting energy efficiency), water efficiency, CO2 emissions reduction, improved indoor environmental quality, and stewardship of resources and sensitivity to their impacts.


 * ** HID Lamp: **high intensity discharge (HID) lamps (light bulbs) have a longer life and provide more light (lumens) per watt than most other light sources. Available in mercury vapor, metal halide, high pressure sodium, and low pressure sodium types.


 * ** Luminaire: ** a light fixture


 * ** Valance Lighting: ** lighting at or near the top of a window provided by a luminaire that is shielded by an opaque panel parallel to the wall which directs light upward and downward from the luminaire


 * ** Wall Grazing: ** a lighting term that refers to the dramatic highlight and shadow effects on surfaces such as draperies, stone, and brick. Grazing creates easily distinguishable high and low levels of light on the surface.


 * ** Wall Sconce: ** a luminaire (light fixture) affixed to the wall and usually decorative in nature.


 * ** Wall Washing: **a lighting technique that produces a relatively smooth, even level of illumination on the wall and reduces the texture of the surface