Beta 1760/IR1000 Mode D'emploi page 40

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13. Emissivity Values
Thermal
Substance
emissivity
Asphalt 0.90 to 0.98
Concrete 0.94
Cement 0.96
Sand 0.90
Earth 0.92 to 0.96
Thermal
Substance
emissivity
Cloth (black) 0.98
Human skin 0.98
Lather 0.75 to 0.80
Charcoal
0.96
(powder)
Lacquer 0.80 to 0.95