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Medientyp: E-Artikel Titel: The concept of correlated colour temperature revisited Beteiligte: Borbély, Ákos; Sámson, Árpád; Schanda, János Erschienen: Wiley, 2001 Erschienen in: Color Research & Application Sprache: Englisch DOI: 10.1002/col.1065 ISSN: 0361-2317; 1520-6378 Schlagwörter: General Chemical Engineering ; General Chemistry ; Human Factors and Ergonomics Entstehung: Anmerkungen: Beschreibung: <jats:title>Abstract</jats:title><jats:p>Correlated colour temperature is a one‐dimensional description of the colour of near‐white light sources. The concept relates the numerical value to a visual observation of smallest colour difference between the chromaticity of the test source and of a point lying on the Planckian locus. In practice, chromaticity difference on a uniform chromaticity scale diagram is used. Since the introduction of the CIELUV and CIELAB spaces, it has been questioned whether the calculations should be done on the traditional <jats:italic>u</jats:italic>,<jats:italic>v</jats:italic> diagram, or by using a more equidistant colour space. Based on our visual experiments, we can state that the <jats:italic>u</jats:italic>,<jats:italic>v</jats:italic> diagram‐based calculation is adequate to describe the correlated colour temperature of a source. The individual scatter of observations is so large that a visual definition has no practical reality. Thus, we recommend changing the definition of correlated colour temperature from a visual definition to a mathematical one and dropping any reference to visual investigations. © 2001 John Wiley & Sons, Inc. Col Res Appl, 26, 450–457, 2001</jats:p>