Question

Stefan boltzmann law of thermal radiation is applicable for

Answer 1

Stefan-Boltzmann law, statement that the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature. The law applies only to blackbodies, theoretical surfaces that absorb all incident heat radiation.

Answer 2

Blackbodies, hypothetical surfaces that completely absorb incident heat radiation, are subject to the law.

• This fundamental law describes the relationship among temperature and the total radiant energy radiated by a black body.
• According to this, the total energy released by a black object's surface area over the course of one unit of time is inversely related to the object's absolute temperature.
• Any item that exhibits the properties of a black body, that is, one that absorbs all incident electromagnetic energy and reflects none of it, is subject to the law.
• Although black bodies are hypothetical constructions and do not exist in nature, they can behave somewhat like them under certain circumstances.
• It is a basic law of thermodynamics that is used in many real-world contexts, including astronomy, meteorology, and energy technology.

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