The amount of radiation mainly depends on
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The ratio of the energy absorbed by the body to total energy falling on it is called
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The total emissivity power is defined as the total amount of radiation emitted by a black body per unit
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Depending on the radiating properties, a body will be opaque when
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Depending on the radiating properties, a body will be white when
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Thermal diffusivity of a substance is
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The thermal diffusivities for gases are generally
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In free con-vection heat transfer, Nusselt number is function of
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The unit of Stefan Boltzmann constant is
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According to Stefan-Boltzmann law, ideal radiators emit radiant energy at a rate proportional to
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Total emissivity of polished silver compared to black body is
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The value of Prandtl number for air is about
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