Screens can be difficult to see if lighting fixtures produce a high level of glare. An ideal system for lighting a classroom with computer terminals includes an indirect system as the main light source, with a wall wash luminaire for perimeter chalkboards. Providing some downlight with perforated holes or a lens in the bottom of the lighting fixture will make people think the atmosphere is brighter. They will feel more comfortable knowing the source of the light. Although fluorescent systems are probably the most popular for classrooms, other light sources may be appropriate for various areas.
Incandescent lamps are the primary source of illumination in most homes.
Fluorescent lamps produce light by activating selected phosphors on the inner surface of the bulb with ultraviolet energy generated by a mercury arc. HID is also a point source, which provides the opportunity for better light control. Investigate the Latest Technology Specular reflectors may be used for classroom applications. Specularity is the measure of a surface s ability to reflect all the light at the inverse of the angle at which it is received. Many schools are being retrofitted with an industrial channel with a painted baffle under the lamps.