A hot object losses heat to its surrounding in the form of heat radiation. The rate of loss of heat depends on the

The rate of heat loss by radiation from a hot object to its surroundings is governed by the Stefan-Boltzmann Law. While every object radiates energy proportional to the fourth power of its absolute temperature [1], the net rate of heat loss specifically depends on the temperature of both the object and its surroundings. According to the law, the net heat transfer rate is expressed as q = εσA(Th⁴ - Tc⁴), where Th is the hot body's temperature and Tc is the surrounding temperature. This formula demonstrates that the net loss is determined by the difference between the energy emitted by the object and the energy it absorbs from the environment [1]. Therefore, the rate of loss is fundamentally dependent on the temperature difference between the object and its surroundings.

Sources

1. [1] https://www.sciencedirect.com/topics/engineering/radiation-heat-transfer