Radiation Emissivity of some common Materials

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Radiation emissivity for some common materials as 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.

The emissivity coefficient - ε - for some common materials can be found in the table below:

Material	Emissivity Coefficient - ε -
Water	0.993 - 0.998
Ice	0.98
Snow	0.969 - 0.997
Sand	0.949 - 0.962
Granite	0.898
Green Grass	0.975 - 0.986

More about radiation heat transfer

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