Recent content by Julianotcp

Ok, now I understand. Thank you :)

Yes, but my doubt is for the light that it absorbs. Say that a BB is in thermal equilibrium at room temperature, and there is white light inciding on it. Why doesn't the BB re-emits this white light? Where does it go? Does it raise the temperature of the BB? Obs.: Sorry for my bad english :)

I know that a black body is an idealized body that absorbs all the incident EM radiation. And I also know that the BB emits a spectrum of thermal radiation that depends on its temperature. What I cannot understand is the re-emission. For what I've read, when in thermal equilibrium, a BB absorbs...