Discover new knowledge and insights with IDNLearn.com's extensive Q&A database. Get step-by-step guidance for all your technical questions from our knowledgeable community members.

What is emissivity?
A. Measure of a material's ability to conduct heat
B. Measure of a material's ability to resist heat flow
C. Measure of a material's ability to emit thermal radiation
D. Measure of a material's ability to absorb moisture