What is color appearance?
Color appearance is color temperature, which is measured in Kelvins. It ranges from 9000K (which appears to be blue) down to 1500K (which appears orange-red). Color temperatures of 4000K or more are considered cool, 3100K or less are considered warm. What is a footcandle? A unit of measurement indicating how much illumination is reaching a surface. It is equal to one lumen striking an area of one square foot. What is a candela? A candela is a unit of measure indicating the luminous intensity (candlepower) of a light source in a specific direction; any given light source will have many different intensities, depending upon the direction considered. Why should I be concerned about the mercury content of lamps? Mercury is a highly persistent and toxic chemical that is building up to dangerous concentrations in fish, wildlife, and human beings throughout the US. By choosing high-efficiency lamps that contain less mercury, you help reduce the environmental impacts and health risks of lamp b
Color appearance is color temperature, which is measured in Kelvins. It ranges from 9000K (which appears to be blue) down to 1500K (which appears orange-red). Color temperatures of 4000K or more are considered cool, 3100K or less are considered warm. What is a footcandle? A unit of measurement indicating how much illumination is reaching a surface. It is equal to one lumen striking an area of one square foot. What is a candela? A candela is a unit of measure indicating the luminous intensity (candlepower) of a light source in a specific direction; any given light source will have many different intensities, depending upon the direction considered. Why should I be concerned about the mercury content of lamps? Mercury is a highly persistent and toxic chemical that is building up to dangerous concentrations in fish, wildlife, and human beings throughout the US. By choosing high-efficiency lamps that contain less mercury, you help reduce the environmental impacts and health risks of lamp b
