Premium
Confusion between observation and experiment in the Helmholtz–Kohlrausch effect
Author(s) -
Nayatani Yoshinobu,
Sakai Hideki
Publication year - 2008
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/col.20400
Subject(s) - confusion , achromatic lens , helmholtz free energy , chromatic scale , variable (mathematics) , mathematics , computer science , psychology , optics , physics , mathematical analysis , thermodynamics , combinatorics , psychoanalysis
The cause of existing misunderstanding is clarified on the Helmholtz–Kohlrausch (H–K) effect. The misunderstanding is that the effect is the same in magnitude between the variable achromatic color (VAC) and the variable chromatic color (VCC) methods. It comes from the confusion between a single observation and a complete experiment. If both methods are tested in a proper experiment with sufficient observations, then the methods do give different results. The present communication together with a previous article (Color Res Appl 2006; 31: 146–155) will clarify the differences between VAC and VCC methods. For readers' convenience, a simple and accurate experimental method is proposed for grasping the large effect of the VCC method. © 2008 Wiley Periodicals, Inc. Col Res Appl, 33, 250–253, 2008