Abstract
A novel method has been employed to measure accurately the spectral emissivity of a range of metal and non-metal solid materials. The method is particularly well suited to poor thermal conductors with high emissivity since these cannot normally be measured very accurately owing to large uncertainties associated with the measurement of surface temperature. Results are reported on two NBS standard reference materials. Some preliminary measurements on bare or coated V-grooved specimens of aluminium are also reported and the results compared with a theory that assumes perfectly specularly or diffusely reflecting surfaces. The specimen design has been chosen to enable the effects of the V-groove shape and the surface emissivity to be distinguished experimentally.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
