5 Questions
What is black-body radiation?
Black-body radiation is the thermal electromagnetic radiation within, or surrounding, a body in thermodynamic equilibrium with its environment, emitted by a black body.
What does the spectrum of black-body radiation depend on?
The specific, continuous spectrum of wavelengths of black-body radiation depend only on the body's temperature.
How can the thermal radiation emitted by many ordinary objects be approximated?
It can be approximated as blackbody radiation.
At what temperature does a black body radiate mostly in the infrared spectrum?
At room temperature (23 °C (296 K; 73 °F))
What does a perfectly insulated enclosure containing blackbody radiation do?
It will emit the blackbody radiation through a hole made in its wall, provided the hole is small enough to have a negligible effect upon the equilibrium.
Test your knowledge about black-body radiation, an idealized thermal electromagnetic radiation emitted by a non-reflective body in thermodynamic equilibrium. Learn about its specific spectrum of wavelengths and its dependence on temperature.
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