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About LED

History of LED

In 1962, Nick Holonyak Jr., invented the first visible-spectrum LED (red diode). Since then, different other LED colors were invented and, eventually, the white light. A once expensive luxury, LED has not only become more affordable but also more energy efficient. LED lights have a lifespan of 50000 hours and tend to last longer than any other bulbs on the market. In 2012, more than 49 million LED products were installed in the US, with a reduction in annual energy costs equivalent to around $675 million. This significant amount is witness to the efficiency of LED lighting and the power it has (and saves) in the long run. It is important to note that since 2012, LED lighting has only been improving in terms of life expectancy and low energy consumption and can be found at even cheaper prices as competition grows worldwide.



Technical explanation 

A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode that emits light when activated. When a suitable current is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the colour of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.










 


Advantages of LED


The reasons to switch to LED are multiple. LED lights not only benefit you personally but also benefit the environment and society as a whole. Here are some advantages which only LED lights can bring:

 

► 50000 light hours-  Their long life span (nearly 20 times longer than traditional lighting) allows you to make use of them for nearly 6 years. This also helps reduce the impact on the environment that comes with manufacturing new products and the disposal of the old bulbs.

► Energy efficient- Not only can they generate more light than traditional lighting, they also do so at a very low voltage. They use around 60-80% less energy than traditional lighting.

► Minimal maintenance- Due to their long life, LEDs require little maintenance costs. Switching to LED means that you will no longer have to deal with costs such as: cost of time to report light outage, cost of new replacement material, cost of installing new material. 

► Low carbon emission- Did you know that half of our our carbon footprint is due to electricity? Switching to LED lighting will only use a fraction of what traditional lighting does. By simply installing LED lights at home you can reduce carbon emissions by 6 tons a year. Six tons of carbon emission is equivalent to 700 gallons of gasoline.

►No heating up- Unlike traditional lighting, LEDs do not heat up and remain cool. For this reason, it eases the pressure on cooling systems during hot days and is favoured in areas where temperatures need to be maintained cool (such as bars).

► No harmful substances- LED lights contain no harmful substances such as mercury or other toxins. Unlike fluorescent lamps, their disposal would not harm the environment.

► No UV radiation- LEDs produce little to no UV radiation that can be damaging to fabric and other sensitive material. UV light can cause non-resistant materials and surfaces to fade or discolor.

 

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