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The Various Characteristics Of LED Light Bulbs
Since the compact florescent light bulb has started to rapidly replace the aging incandescent light bulb in recent years, a new type of bulb is emerging which will replace them both. The light emitting diode (LED) bulb has features that make it a better technology.
While the incandescent bulb creates light in a vacuum and the compact florescent bulb does so in a tube, the LED is referred to as solid-state lighting. It is solid state because it uses solid matter, a semiconductor, to generate light.
The semiconductor is created with both a positively and negatively charged part. The positive layer has small openings for the free electrons coming from the negative component to move through. When an electric charge is applied to the semiconductor, a flow of excited electrons passing through the holes emits a light.
The 2 good benefits of LED light bulbs are their long life and energy efficiency. They just use approximately one tenth as much electricity as traditional bulbs and thus offer big financial savings in power costs and a reduced carbon footprint. This makes them both cost effective and environmentally friendly.
Their solid state construction and really low heat emissions give them a longer lifespan. LED light bulbs significantly outlast even compact florescent bulbs and could easily last for a decade or longer in normal use. This not only saves on the cost of the bulb, but it also saves time and replacement costs. Much better suited to survive rough handling and outside conditions, a LED light bulb could be relied on to work when required most.
Since they reach their full brightness almost instantly and are mercury free, LEDs solve two major issues that compact fluorescent bulbs have (mercury content as well as lag time in reaching total brightness).
LED light bulbs are designed to emit an extremely directional light so the light can be aimed exactly where it is needed. Also, their light is nearer to the colour of daylight, which research indicate helps people stay alert.
Till recent changes in the technology, the structure of the LED caused much of the light to be trapped inside. This and the bluish light they often emitted brought on a dimmer light that made LEDs unsightly for home usage.
LEDs are now much brighter though and could emit the same soft, white light regular bulbs do.
One drawback with LEDs that has not been corrected yet is cost. While their energy savings and long life mean LEDs are cost-effective and save money in the long term, they're very unlikely to achieve mass consumer acceptance until their prices come more in line with other kinds of bulbs. Although their prices are coming down, LED light bulbs are still relatively costly.
As soon as their prices come down more, LEDs are likely to become the standard and dominate lighting until a better technology appears.
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