LED’s have been around since the 60s, but have mostly been relegated to showing the time in an alarm clock or the battery level of a video camera. Its use as a source of illumination was a challenging one for scientists. Light Emitting Diodes or LED Lightings- differ from traditional light sources in the way they produce light. In incandescent bulbs, a tungsten filament is heated by electric current until it glows or emits light. In a fluorescent lamp, an electric arc excites mercury atoms, which emit ultraviolet (UV) radiation. After striking the phosphor coating on the inside of glass tubes, the UV radiation is converted and emitted as visible light. On other hand LED’s are diodes made from semi-conductor materials.
LED lights use up to 90% less power than normal lights, which has many more advantages than you would ever assume. Firstly electrical running costs are reduced, not only reducing the demand placed on your household energy consumption but feel good knowing you are saving energy and becoming green, the global warming factor.Since LED lights don’t contain any energy hungry materials, they are very efficacious-convert energy to light, not heat as non LED’s lights do. These make them intrinsically safe and are generally cool to the touch. LED’s lights can provide with 50,000 hours or more of life, which can tremendously reduce maintenance costs and time. This means, assuming an average twelve hour night, you will not need to change your LED lights after a good eleven year. In comparison, an incandescent light bulb lasts approximately 1,000 hours
. Lastly the most important benefits if you are environment conscious is LED’s unlike Fluorescent and mercury vapor lighting which contains mercury, a hazardous waste to the environment and must be disposed of properly, LED’s don’t contain mercury and are not considered hazardous waste designating them environmental friendly.
Sunday, February 22, 2009
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