What is LED?
Invented in 1962 by scientist Nick Holonyak, LED stands for light-emitting diode. An LED bulb is a semiconductor device that converts electricity into light energy. When the electrical current passes through, light is made. LEDs are a type of Solid State Lighting (SSL). The light emitted from the light source is measured in Lumens, the higher the Lumen number, the brighter the bulb. When you see Watts on a bulb, itís telling you the energy required to illuminate it - the lower the wattage, the less energy it uses. The color temperature of LEDs is measured in degrees Kelvin, and most bulbs today are sold as Warm White, Cool White, or Daylight. Each has a different look and feel, so itís up to you to choose!
How Is An LED Bulb Different?
An incandescent bulb (those old, glass, Thomas Edison things) use electricity to heat a filament (that metal squiggly wire). When the metal gets hot, light is produced. These glass bulbs get so hot, because 90% of its light comes from heat.
A CFL bulb (stands for Compact Fluorescent Lamp- usually those swirly ones) works by an electric current moving through the tubes (containing argon, mercury, and phosphor) to emit light. Because of their unique spiral design, CFL bulbs take a long time to turn on and heat up, but they use much less energy than an incandescent bulb.
You may have also read about Halogen and eco-incandescent bulbs. Above all, thereís LED.
LED bulbs stand out, because they consume 10% of the energy of an incandescent. Since there is no metal filament, LEDs produce very little heat. Bulbs will last 10x longer than incandescent bulbs and far longer than CFL bulbs. LEDs produce a directional output of light, where the others emit light and heat in all directions. They also save money and are very reliable.
Why Should I Choose LED?
LEDs will last up to 12 years. Yes you read that correctly, 12 years. Because of their low power consumption and limited heat, LEDs are rated for 100,000 hours of operation. Thatís equal to 11.5 years of continuous use! Also, LEDs are environmentally friendly; LEDs contain no mercury or lead, they protect the environment from toxic waste disposal. With less energy used, carbon emissions are lower.
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