Black Body (Noun)
Meaning
A hypothetical object capable of absorbing all the electromagnetic radiation falling on it; "a black body maintained at a constant temperature is a full radiator at that temperature because the radiation reaching and leaving it must be in equilibrium".
Classification
Nouns denoting natural objects (not man-made).
Examples
- A black body is defined as a hypothetical object that absorbs all electromagnetic radiation incident upon it, with no reflected or transmitted radiation.
- The black body model is essential for studying the thermal radiation emitted by objects, particularly in physics and engineering applications.
- A black body maintained at a constant temperature is a full radiator at that temperature because the radiation reaching and leaving it must be in equilibrium.
- According to Kirchhoff's law of thermal radiation, the radiation emitted by a black body depends only on its temperature and not on its shape, composition, or other properties.
- A perfect black body would absorb all incident radiation and emit the maximum possible radiation for a given temperature, making it an ideal reference point for studying thermal radiation.