Q.If surfaces of all bodies are continuously emitting radiant energy, why do they not cool down to 0 K?

Emission is only half the exchange: by Prevost's theory, every body at a temperature above 0 K both emits radiation and absorbs the radiation falling on it from its surroundings. …

Emission is only half the exchange: by Prevost's theory, every body at a temperature above 0 K both emits radiation and absorbs the radiation falling on it from its surroundings. A body warmer than its surroundings loses more than it gains and cools — but only until its rate of absorption equals its rate of emission, i.e. unt …

Answer from the section this box belongs to (§3.12.1 of the Balbharati Std-XII Physics textbook) — recall the definit …

Answering from memory of a different grade's phrasing — use this chapter's own definitions and keep th …