I am also unsure of your question but it seems to relate to the mass difference if a body is radiating at all frequencies as a black body does. There was a similar question recently about a hot body having more measurable mass if it hot and Einstein’s mass energy equation says that it does, although the difference is tiny. The practical nature of a black body is that it heats up or cools down faster than , we can say, coloured body, or a reflective body , because it radiates or absorbs all frequencies. This is used to regulate the temperature of satellites. As a body temperature falls the tiny mass effect is reduced, is that the question?
Last edited by profloater; 2019-Nov-08 at 01:45 PM.
sicut vis videre esto
When we realize that patterns don't exist in the universe, they are a template that we hold to the universe to make sense of it, it all makes a lot more sense.
Originally Posted by Ken G