TM55-1500-345-23
Table 8-5. Definitions of Common Painting Terms -- Continued
Definitions
Common Painting Terms
A generic term referring inclusively to all colors of the spectrum,
Color
and white and black. Color is described by three properties: hue,
lightness and saturation.
(1) Hue (color, character, dominant wavelength), blue, green, red,
etc.
(2) Lightness (brightness, reflectance, value) position on the gray
scale between pure black and pure white.
(3) Saturation (purity, grayness, cleanliness, muddiness, chroma),
purity or intensity of color.
Color stability after exposure to the elements.
Color Retention
The ability of two or more materials to mix with each other without
Compatibility
separation or adverse reaction.
Detrimental change in a material usually a metal under condition of
Corrosion
exposure.
The tendency of a liquid to draw up because of high surface ten-
Crawling
sion.
Removal of color on abrasion or rubbing.
Crocking
Products used for controlling undesirable foams.
Defoamer
The temperature at which the air becomes saturated with water
Dew Point
vapor.
A liquid which is blended with an active solvent to reduce cost.
Diluent
Any catalytic material which when added to a drying oil accelerates
Drier
drying or hardening of the film.
The temperature as indicated by an ordinary thermometer.
Dry Bulb Temperature
A phenomenon whereby a whitish crust of fine crystals forms on a
Efflorescence
painted surface. These are usually sodium salts which diffuse
through the paint film from the substrate.
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