Compared to general service incandescent lamps giving the same amount of visible light, CFLs use less power and have a longer rated life.
A compact fluorescent lamp (CFL), also known as a compact fluorescent light bulb (or less commonly as a compact fluorescent tube [CFT]), is a type of fluorescent lamp. Many CFLs are designed to replace an incandescent lamp and can fit in the existing formerly used for incandescents.
A LED is usually a small area light source, often with optics added to the chip to shape its radiation pattern and assist in reflection. LEDs can also be used as a regular household light source.
Besides lighting, interesting applications include sterilization of water and disinfection of devices. LEDs are ultra bright lights that use a very small amount of energy (smaller than energy saver
bulbs). This is the latest technology. Applications include homes, spot lights, floodlights and others where very bright light is reqired.
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