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.

These common lighting qualms have to do with the color temperature of the light bulbs. While many people may look at wattage ...

Scientists at CNRS have synthesized copper-based compounds whose luminescence changes color irreversibly once a critical temperature is exceeded. This color change, a unique indicator of the ...