Emissivity of Surface
The total radiation from a black body per second per unit area is ________ fourth power of the absolute temperature. This statement is known as Stefan Boltzmann law.
The amount of radiation mainly depends upon the
The emissivity for a black body is
Emissivity is the ratio of the thermal radiation emitted by a surface to the radiation emitted by an _________ at the same temperature.
Emissivity is a highly material-dependent surface property, which defines the material's capacity to emit energy.