TyroCity

Discuss User for Discuss

Posted on

What is the physical meaning of emissivity? Write it’s unit

In the MKS unit system, radiative flux is given in joules per second (watts) per square meter (W/m²).

Emissivity (image) is the ratio of a surface’s ability to emit radiant energy compared with the ability of a perfect black body of the same area at the same temperature. Emissivity is a dimensionless constant having values between 0 and 1. Perfect reflectors would have Emissivity = 0. Perfect absorbers would have Emissivity = 1.

This post was part of TyroCity discussion forum
Question asked by Nirajan_Acharya
Answered by aadarsh_gautam

Discussion (0)