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LED lights
Some people have heard a little bit about LED lights, but are unfamiliar with exactly what these lights do and what the advantages of using them might be.
Here are some answers to some of the questions people have:
• What is LED? - LED stands for light emitting diode. It is a semiconductor device that emits visible light when an electrical current passes through it. It is a non-regular kind of diode.
• Are there limitations on what color of light these things can emit? - For the most part, LEDs are monochromatic. The color of the light is associated with the light wavelength. There are some LEDs that can be made with different semiconductor materials. These LEDs emit lights in a number of different wavelengths. These light wavelengths are able to range anywhere from 400 nanometers (blue) up to 800 nanometers (red). The colors that are most popular and available on the market are red, orange, amber, yellow, green, blue and white.
• Why are some LED colors more expensive than others? - The basic reason for this is that different-colored LEDs require different semi-conductors. Some semiconductor materials are more expensive than others. Likewise, manufacturing costs vary as well. The most expensive LEDs white. To make white LED lights, you need to have red, blue and green LEDs, since these colors combine to create the white light.Knowing a bit more about how LED lights work is a good start in deciding if you want to use them in your home.
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