LEDs are based on the semiconductor diode. When the diode is forward biased (switched on),electrons are able to recombine with holes and energy is released in the form of light. This effect is called electroluminescent and the color of the light is determined by the energy gap of the semiconductor. The LED is usually small in area (less than 1 mm2) with integrated optical components to shape its radiation pattern and assist in reflection(Wikipedia)AND NOW WE STARTING USE FOR HOUSE LIGHT AND OTHERS. Electricity consumption will 10 times more smaller than former lights.
A smart grid delivers electricity from suppliers to consumers using digital technology to save energy, reduce cost and increase reliability and transparency. Such a modernized electricity network is being promoted by many governments as a way of addressing energy independence,global warming and emergency resilience issues.
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