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Stefan-Boltzmann law
This term refers to a fundamental principle of thermodynamics and quantum physics. It is used primarily in astrophysics and materials science to determine the energy output of stars or the heat radiation of objects at high temperatures.
As a specific scientific law named after physicists Jožef Stefan and Ludwig Boltzmann, it is treated as a proper noun phrase. It is used exclusively in technical, academic, and scientific registers and does not have a casual or metaphorical application.
Meanings
A law of physics stating that the total energy radiated per unit surface area of a black body per unit time is proportional to the fourth power of the black body's thermodynamic temperature.
The Stefan-Boltzmann law is used to calculate the total power emitted by a star based on its surface temperature.