That adopting LEDs would achieve a massive reduction in world energy consumption is irrefutable as LEDs emit a greater quantity of light per watt than the incandescent bulb. The traditional light bulb functions via the passing of an electric current through a resistive filament which is subsequently heated to such a high temperature that it glows. This system of thermal radiation loses 98% of energy output through the heat energy that is generated superfluously.

The LED on the other hand, such as the gu10, emits light through electroluminescence which is generated by semi-conductors, a system incomparable to that of the incandescent bulb in terms of energy efficiency. Thus one 40-watt incandescent light bulb will emit a staggering 89kg of Carbon Dioxide annually if switched on for ten hours on average a day. Over the exact same time span, the 6-watt LED will create just 14kg of Carbon Dioxide, a reduction of 85%. When one considers that lighting accounts for a massive one quarter of the world’s energy consumption, the need to change to LEDs becomes understandably pressing.


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