FCS 346 Lecture Notes - Lecture 3: Color Rendering Index, Color Temperature, Kelvin
5 Feb 2018
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Document Summary
Color temperature is an important characteristic of light. When it comes to choosing a light bulb it is among the most important considerations. The kelvin is a unit of measurement for temperature. The kelvin (k) temperature scale is an extension of the degree celsius scale down to the absolute zero. A hypothetical temperature characterized by a complete absence of heat energy. Temperature on this scale are called kelvins (lower case) It is assigned the unit symbol k. The symbol (capital k) stands alone, no degree symbol. We utilize the correlated color temperature (cct, or kelvins to describe the appearance of that light source) Realize that color temperature was first established using incandescent bulbs as its standard of measurement. Cri denotes the ability of a light source to represent colors as they appear in natural light. The higher the cr (max 100) the closer the light source rendering color naturally. 80-89 = ok, anything 85+ is considered good.
