MANUAL Published: 01 January 2012

Measurement of Gonioapparent Colors


THESE TERMS ARE SPECIFIC TO GONIOAPPARENT phenomena. The definitions below are from ASTM Standard E284 [1]. They are italicized when they first appear in this chapter. annular, adj — descriptor for directional illuminating (or viewing) geometry in which the illuminator provides radiation (or the receiver possesses responsivity) that is distributed continuously and uniformly throughout the 360° of azimuth of the measurement. (See also circumferential.) anormal, adj — of angles, measured with reference to the normal to the surface. (2008)

Author Information

Rodrigues, Allan B.
DuPont Performance Coatings, Troy, MI
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Developed by Committee: D01
Pages: 272–281
DOI: 10.1520/MNL12207M
ISBN-EB: 978-0-8031-8891-4
ISBN-13: 978-0-8031-7017-9