= Neumann's law
{wiki=Neumann's_law}
Neumann's Law, often referred to in the context of thermodynamics and heat transfer, is typically associated with the behavior of heat conduction in materials. It states that the heat flux out of a material is proportional to the temperature gradient within that material, usually expressed mathematically by Fourier's law of heat conduction. In a broader context, the law may also refer to various principles in physics and mathematics related to von Neumann's work, such as in quantum mechanics or game theory.
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