A. diffuses all the thermal rays in the different directions
B. absorbs all the thermal rays
C. negligible absorptivity but high reflectivity
D.Allows all the incident radiation to pass through it
When the vibrations of the light-ether reach the surface of a body they are partly reflected and partly absorbed, or transformed into heat energy. … Bodies which allow heal to pass through them are termed diathermous (Gr. dia, through, and thermaind, to heat).
