Q: Just as I understand the concept of color temperature (Kelvin), now CRI is being bandied about as LEDs come into the market. What is it exactly? A: I am right there with you. From the beginning of ...

When LEDs were first introduced, it was hard for us to part with our old friends incandescent and halogen lamps, and the luminaires made for them. It seemed like nothing could ever replace the warm ...

The color of light, expressed in Kelvins (K). The sun is about 5800 Kelvins. This is called a "temperature," because the hotter fire gets, the more it changes from a warm yellow glow to white. The ...