Light is light, right? Not exactly. The light that comes from the overhead fluorescents at your office is probably nothing like the light that pours from your favorite chandelier at home or that of ...

LEDs offer a new palette of colors to the world of lighting. First, learn these two basic types: soft white and daylight. Soft white refers to warm golden light at 2700 Kelvin, close to the look of ...

As the world transitions away from ordinary incandescent lighting and toward more energy-efficient light sources, the topic of light-source color temperature has suddenly become more important.

Color temperature is defined along a second locus in the color space. This 'black body' locus is often employed in lighting measurement to describe various shades of white light by its color ...

(via minutephysics) If you take a piece of white paper into different lighting conditions, it will be an objectively different color in each situation, but our brains are clever enough to make us feel ...

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 ...

The changing of color can influence our perception of objects, be used to warn us against dangers or hazards, or help to conserve energy. Ph.D. candidate Weixin Zhang has developed organic "photonic" ...

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 ...