ALTANA Color-View - Manual (Page 60)

GLOSSARY
69
Incandescent Lamp a lamp which contains a
filament heated until radiant
energy (light) is emitted
Indexes
mathematical equations used to
characterize a specific attribute
of a sample, e.g. the whiteness
or yellowness of a sample, the
chromaticity difference or the
total color difference
Light
electromagnetic radiation
detectable by the eye
Lightness
the attribute of color perception
by which a sample is judged to
reflect more or less light
Master Standard
standards which are carefully
calibrated and maintained for
calibration of working standards
that are in daily use
Metamerism in Objects
the phenomenon whereby colors
of specimens match when
illuminated by light of one
spectral composition despite
differences
in spectral
reflectance of the specimen, and
that consequently may not match
in light of some other spectral
composition