Encyclopedic Dictionary of Polymers

2011 Edition
| Editors: Jan W. Gooch

Whiteness Index

  • Jan W. Gooch
Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-6247-8_12823
Any of several numerical indices used to indicate the degree of whiteness; examples are the following:
  1. (1)

    W = 4B-3G where B and G refer to tristimulus colorimeter readings.

     
  2. (2)

    W = 100-[(100-L)2 + (a2 + b2)]1/2 where L, a, and b refer to coordinates in Hunter's L, a, b Color Difference Equation.

     
  3. (3)

    Chemstrand Whiteness Scale W = 10 (Y – 2p2)1/2 where Y is the CIE tristimulus value and p is the CIE excitation purity.

     

(Colour Physics for Industry, 2ndEd., ed., McDonald, Roderick, Society of Dyers and Colourists, West Yorkshire, England, 1997)

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Jan W. Gooch
    • 1
  1. 1.AtlantaUSA