______ are any type of asymmetric luminaire that is intended to flatly light the wall from the ceiling down to the floor.

________is a kind of lighting system which utilizes luminaires which send most of the light downwards directly on the working plane but a considerable amount reaches the ceilings and walls also.

________ is given by the ratio of luminous flux reflected from a small area of a surface to the total flux incident upon it.

________ is a kind of lighting system which lies between the direct and indirect lighting where in the light is partially received by diffuse reflection and partly direct from the source.

________ is a kind of lighting system in which luminaires are employed which have almost equal light distribution downwards and upwards.

________ are specially designed to illuminate a desk area while minimizing veiling reflections.

________ is the intensity of sensation resulting from viewing light sources and backgrounds.

________ are widely used in offices, stores, schools, and other commercial and institutional facilities for general lighting in work and sales areas.

________is any device that includes a lamp holder and the means of electrification and support for that device.

________ is the ratio of the lumens actually received by a particular surface to the total lumens emitted by the luminous source.