Emissivity of Surface
Which of the following statement is correct?
The body which absorbs all radiations incident upon it, is called as
Emissivity is the measure of an object's ability to absorb, transmit and emit infrared energy.
What is the equivalent emissivity for radiant heat exchange between a small body (emissivity = 0.4) in a very large enclosure (emissivity = 0.5)?
When heat is supplied at a constant rate to a body, heat loss takes place by conduction, convection and radiation.