Gods Own Country-Kerala

LED the best option

LED

A light-emitting diode (LED) electronic light source. The first LED was built in the 1920s by a Russian radio technicia Oleg Vladimirovich Losev, who noticed that diodes used in radio receivers emitted light when current was passed through them. The LED was introduced as a practical electronic component in 1962.

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 electroluminescence 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.

LEDs present many advantages over traditional light sources including lower energy consumption, longer lifetime, improved robustness, smaller size and faster switching. However, they are relatively expensive and require more precise current and heat management than traditional light sources.

Applications of LEDs are diverse. They are used as low-energy indicators but also for replacements for traditional light sources in general lighting and automotive lighting. The compact size of LEDs has allowed new text and video displays and sensors to be developed, while their high switching rates are useful in communications technology.

Sustainable Lighting

Where incandescent bulb has an expected lifespan of 1,000 hours while an LED can continue to operate with reduced efficiency for more than 50,000 hours, 50 times longer than the incandescent bulb.

An Environmentally Friendly Option

A single kilowatt-hour of electricity will generate 610 g of CO₂ emissions. Assuming the average light bulb is on for 10 hours a day, a single 40-watt incandescent bulb will generate 89 kg of CO₂ every year. The 13-watt LED equivalent will only be responsible for 29 kg of CO₂ over the same time span. A building’s carbon footprint from lighting can be reduced by 68% by exchanging all incandescent bulbs for new LEDs.