Colour physics

R. McDonald, ed.. Colour Physics forlndustry. Society of Dyers and Colourists, Bradford, UK, 1987. 

This analytical approach is difficult to apply to individual pigments because physical data relating to refractive index, dispersion curves and the absorption curves in the solid state are not available. A colligative approach, based on the Kubelka-Munk analysis which characterises pigments by only two constants, an absorption and a scattering coefficient, has been applied with considerable success to the computation of the proportions of pigments in mixtures needed to match a given colour. Much of the book Colour physics for industry is devoted to this topic [37]. 

This book is concerned with the technological applications of colour chemistry and there is no intention in this introduction to cover the theoretical aspects of the topic. Specific aspects of colour theory are covered as needed within the main body of the text. For those requiring a more detailed treatment of the theoretical aspects of colour physics excellent texts are available, whilst they are summarised in very readable forms in others of a more general nature. " ... 

Some Elements of Colour Physics Relating to Colorants... 

Colourware Ltd 2001 Frequently Asked Questions about Colour Physics. Colourware Ltd, Staffordshire, UK. 

Colour Physics for Industry, (Ed. R. McDonald) Society of Dyers and Golourists, 1997... 

MACDOUGALL, D.B. and LIMA, R. c. (2001) Coffee and Milk with Kubelka and Munk. la Colour Science, Volume 3 Colour Physics, eds Gilchrist, A. and Nobbs, J H. Department of Colour Chemistiy, University of Leeds. 

NOBBS, J. H. (1997) Colour-match prediction for pigmented materials. In Colour Physics for Industry, 2nd edn, ed. R McDonald, 292-372, Society of... 

PATTERSON, D. (1987) Instruments for the measnrement of the colour of transparent and opaqne objects. In Colour Physics for Industry, ed. R. McDonald, 35-62, Society of Dyers and Colonrists, Bradford. 

Clearly the color measurement and eolor fastness testing of textile polymers is a subject of its own and deserves far greater attention than can be given to it here, and the reader is directed to publications such as Peters and Freeman on Colour Chemistry or Colour Physics for Industry by Roderick McDonald, both published by the Society of Dyers and Colourists. There are however a few things that should be said here. 

Also called coefficient of absorption. McDonald R (1997) Colour physics for industry, 2nd edn. Society of Dyers and Colouritst, West Yorkshire, England. 

Color measurement n. Color is a manufactured object is normally obtained by applying a colorant (dye or pigment) to al polymer substrate, such as textile, paper or paint medium. The appearance of such surface colors depends on (1) the nature of the prevailing illumination, (2) the interaction of the illuminating radiation with the colored species in the surface layers, and (3) the ability of the radiation that is transmitted, reflected and scattered from the colored surface to induce the sensation of color in the human eye/brain system. Color measurement consists of the physical measurement of light radiated, transmitted, or reflected by a specimen under specified conditions, and mathematically transformed into standardized colorimetric terms, which can be correlated with visual evaluations of colors relative to one another. McDonald R (ed) (1997) Colour physics for industry, 2nd edn. Society of Dyers and Colourists, West Yorkshire, England. Physical and chemical examination of... 

Complementary colors n. Two colors which, when mixed together in the proper proportions, resnlt in a neutral color. Colored lights, which are complementary, when mixed additively, form white light and follow the lam of additive color mixture. Colorants, which are complementary, when mixed together, form black or gray and follow the laws of subtractive colorant mixture. With the exception of spectrophoto-metric complementaries, which exist only in theory, colors, which are complementary depend on the illuminant chromati-city considered as the neutral point. McDonald R (1997) Colour physics for industry, 2nd edn. Society of Dyers and Colourists, West Yorkshire, England. 

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