Convenient and effective artificial lighting isone of the important advances of the 20thcentury. Artificial lighting allows us to workand play inside and outside our homesindependent of the time of day, and also oftenserves aesthetic purposes. Artificial lighting isgenerally employed for three types of uses:
Ambient lighting—Provides generalillumination indoors for daily activities andoutdoors for safety and security.
Task lighting—Facilitates particular tasks thatrequire more light than is needed for generalillumination, such as under-counter lights inkitchens, table lamps, or bathroom mirror lights.
Accent lighting—Draws attention to specialfeatures or enhances the aesthetic qualities ofan indoor or outdoor environment.