Radiation Emissivity Coefficients
Radiation emissivity of common materials like water, ice, snow, grass and more.
The emissivity coefficient - ε - indicates the radiation of heat from a body according the Stefan-Boltzmann Law, compared with the radiation of heat from a ideal black body where the emissivity coefficient ε = 1.
Emissivity coefficients - ε - for some common materials:
Material | Emissivity Coefficient - ε - |
---|---|
Water (0 - 100oC) | 0.95 - 0.963 |
Ice | 0.96 - 0.99 |
Snow | 0.96 - 0.98 |
Sand | 0.9 |
Granite | 0.96 |
Green Grass | 0.975 - 0.986 |