Concept
Éclairage
Concepts associés (43)
Éclairement lumineux
L’éclairement lumineux est la grandeur définie par la photométrie correspondant à la sensation humaine sur la manière dont une surface est éclairée. Pour qu'un objet qui ne produit pas de lumière par lui-même soit visible, il faut qu'il reçoive de la lumière. Plus il en reçoit, plus il est clair, et visible distinctement. La photométrie définit rigoureusement la lumière reçue, afin de pouvoir calculer cette grandeur, connaissant l'intensité lumineuse des sources de lumière, leur distance et leur direction.
History of street lighting in the United States
The history of street lighting in the United States is closely linked to the urbanization of America. Artificial illumination has stimulated commercial activity at night, and has been tied to the country's economic development, including major innovations in transportation, particularly the growth in automobile use. In the two and a half centuries before LED lighting emerged as the new "gold standard", cities and towns across America relied on oil, coal gas, carbon arc, incandescent, and high-intensity gas discharge lamps for street lighting.
Landscape lighting
Landscape lighting or garden lighting refers to the use of outdoor illumination of private gardens and public landscapes; for the enhancement and purposes of safety, nighttime aesthetics, accessibility, security, recreation and sports, and social and event uses. Light pollution exacerbated by excessive, misdirected or obtrusive use of light, but even carefully used light fundamentally alters natural conditions. As a major side-effect of urbanization, it is blamed for compromising health, disrupting ecosystems and spoiling aesthetic environments.