17
Emissivity Values
Substance Thermal
emissivity
Substance
Thermal
emissivity
Asphalt
0.90 to 0.98 Cloth (black) 0.98
Concrete
0.94
Human skin
0.98
Cement
0.96
Lather
0.75 to 0.80
Sand
0.90
Charcoal
(powder)
0.96
Earth
0.92 to 0.96 Lacquer
0.80 to 0.95
Water
0.92 to 0.96 Lacquer
(matt)
0.97
Ice
0.96 to 0.98 Rubber
(black)
0.94
Snow
0.83
Plastic
0.85 to 0.95
Glass
0.90 to 0.95 Timber
0.90
Ceramic
0.90 to 0.94 Paper
0.70 to 0.94
Marble
0.94
Chromium
oxides
0.81
Plaster
0.80 to 0.90 Copper
oxides
0.78
Mortar
0.89 to 0.91 Iron oxides
0.78 to 0.82
Brick
0.93 to 0.96 Textiles
0.90
