उत्सर्जकता (Emissivity Meaning In Hindi)
(Definition in Hindi) 1. समान ताप पर किसी पृष्ठ से होने वाले सम्पूर्ण विकिरण तथा कृष्णिका से होने वाले सम्पूर्ण विकिरण का अनुपात।
(Definition) 2. The emissivity of an object (ε) is the ratio of energy radiated by the object to the energy radiated by a black body at the same temperature. It is a measure of a material's ability to absorb and radiate energy. A true black body would have an ε = 1, while any real object has ε < 1.
