Black Body Radiation | GCSE Physics Practice
All objects, regardless of temperature, emit and absorb infrared radiation.
What is a perfect black body?
What is Black Body Radiation | Practice?
"Thermal electromagnetic radiation within or surrounding a body in thermodynamic equilibrium with its environment."
A perfect black body is a perfect ____.
As the temperature of an object increases, the wavelength of its peak radiation ____.
If an object absorbs more radiation than it emits, its temperature will ____.
Radiation and Temperature
A perfect black body absorbs all radiation that hits it.
Good absorbers are also good emitters of radiation.
Hotter objects emit shorter wavelengths and more intense radiation.
The temperature of an object depends on the balance of absorption and emission.
Core Fact: A body at a constant temperature is absorbing radiation at the same rate as it is emitting it.
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