Testboy TV 325 - Page 40

Emissivity
40 Testboy
®
TV 325
Emissivity table
The values given in the table can differ in practice due to the surface texture,
geometry or other interfering factors.
Surface Emissivity
Aluminium 0.30
Asbestos 0.95
Asphalt 0.95
Basalt 0.70
Brass (oxidised) 0.50
Stone 0.90
Carbon 0.85
Ceramic 0.95
Concrete 0.95
Copper (oxidised) 0.95
Dirt 0.94
Frozen food 0.90
Hot food 0.93
Glass 0.85
Ice 0.98
Iron (oxidised) 0.70
Lead (oxidised) 0.50
Sandstone 0.98
Paint 0.93
Paper 0.95
Plastic (full over 20 μm) 0.95
Rubber 0.95
Sand 0.90