Now, LED light are widely spread all over the world. LE […]
Now, LED light are widely spread all over the world. LED light stands for "light-emitting diode." It is a semiconductor diode that emits a single wavelength of light when charged with an electric current. LEDs have many practical applications, and the technology is expanding to include organic light emitting diodes, which have significant potential for use in space lighting.
LEDs are commonly used in a wide array of electronic devices such as digital clocks, computer displays, optical mice and laser printers. They are also used in traffic lights and flashlights. LEDs are being used more frequently in homes for landscape lighting, reading lamps, night lights and recessed light fixtures. With their increasing popularity, LED lights are now available with bases that fit inside standard lamp fixtures.
LED lights are expensive in comparison to incandescent and fluorescent light sources. When choosing LEDs for your lighting needs, you have to weigh the upfront cost of the device against the savings over the long term. For example, a pack of 100 LED Christmas lights can cost more than twice what ordinary filament lights cost. You will need 5 to 8 of these strands to cover the average Christmas tree. If you don't put your tree up early in the season and leave it on night and day for several weeks, you might not save enough on your electric bill to justify the expense. An LED television set or computer monitor will probably use less power and have a better picture quality than CRT equivalents. However, an LED-backlit LCD TV or monitor will most likely be less expensive and have similar benefits to LED-only products. For space lighting, LEDs can be a very expensive option. Also, LED lights give off directional light which is very blue in color, which limits their usefulness.