Lighting
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Lighting can be defined as the deliberate installation and applications of lighting systems for domestic, ornamental or aesthetic purpose. The whole system may include artificial light sources along with natural daylight or both as and when required. In most cases lighting requirements during daytime is accomplished through proper4 daylight management whereas night time lighting might be solely reliant on artificial sources powered by electric or solar power sources. Daylight is made maximum use of through the proper design of windows and skylights, but still in the case of very big structures it might not be possible to rely solely on daylight. Human beings relied on oil lamps, furnaces and candles in earlier days, but now they have changed to electric lamps. All modern lighting system designs are designed with energy saving concerns as well as the health effects of lighting. In addition to general uses lighting systems have found its place in interior design and landscaping. Another important area in which lighting systems are found is in vehicles. All vehicles have their internal and external lighting systems which are run on batteries that are rechargeable.
Domestic lighting is accomplished by the use of various types of lamps – like the incandescent lamp and the fluorescent lamp. The latter is more preferred to the former due to their energy efficiency and longer life. Halogen lamps are generally used in automobiles whereas mercury lamps find wide application in street lighting systems. Lighting systems have now become inevitable in stage shows and concerts and Neon lamps or lasers are used in such cases. Such public utility systems are now run on solar cells also owing to the general concern on saving electricity. |
Lighting is the most inefficient everyday practice there is. Barely 10 percent of energy used in a standard lightbulb is actually used to produce light the rest being tranformed into heat. As well as wasting energy and putting an unecessary demand on power stations this is also financially not very clever. Fitting low voltage energy efficient light bulbs will significantly reduce your annual electricity bills. In some cases by as much as £7 per light bulb per year.
