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The Renewable Energy Blog

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by Linda Marcel

Because the compact florescent light bulb has began to quickly replace the aging incandescent light bulb lately, a brand new sort of bulb is emerging that will replace them both. The light emitting diode (LED) bulb has characteristics that make it a better technology.

Whereas the incandescent bulb makes light inside a vacuum and the compact florescent bulb does so inside a tube, the LED is referred to as solid-state lighting. It’s solid state since it makes use of solid matter, a semiconductor, to generate light.

The semiconductor is made with both a positively and negatively charged element. The positive layer has little openings for the free electrons coming from the negative element to move through. When an electrical charge is applied to the semiconductor, a stream of excited electrons moving through the holes emits a light.

The 2 good benefits of LED light bulbs are their very long life and energy efficiency. They just utilize roughly one tenth as much electrical energy as usual bulbs and therefore offer enormous financial savings in power expenses and a decreased carbon footprint. This actually makes them both cost efficient and eco friendly.

Their solid state structure and very low heat emissions give them a longer lifespan. LED light bulbs drastically outlive even compact florescent bulbs and may easily last for a decade or much longer in regular use. This not just saves on the cost of the bulb, but it additionally saves time and replacement costs. Better suited to survive rough handling and outside conditions, a LED light bulb could be relied on to work when required most.

Since they attain their full brightness almost immediately and are actually mercury free, LEDs clear up a couple of main issues that compact fluorescent bulbs have (mercury content as well as lag time in reaching total brightness).

LED light bulbs are meant to emit a really directional light so the light could be aimed precisely where it’s required. Additionally, their light is nearer to the colour of daylight, which research indicate helps people keep alert.

Till recent changes in the technology, the construction of the LED induced a lot of the light to be trapped inside. This plus the bluish light they typically emitted brought about a dimmer light that made LEDs unpleasant for home usage.

LEDs are now a lot brighter though and may emit the exact same soft, white light regular bulbs do.

One disadvantage with LEDs that has not been solved yet is cost. While their power savings and really long life mean LEDs are cost-effective and save money in the long term, they’re very unlikely to attain mass consumer acceptance until their prices come more consistent with other kinds of bulbs. Though their costs are coming down, LED light bulbs are still comparatively pricey.

As soon as their prices come down more, LEDs are more likely to become the standard and dominate lighting until a greater technology appears.

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