Fourier’s Law of Heat Conduction

Fourier’s Law of Conduction states how much heat shall flow through a conductor bridging a thermal difference. This law was formulated by Joseph Fourier in 1822. [1]

Specifically, Fourier’s Law states that heat flow is proportional to the conductor’s area and the thermal difference bridged, and is inversely proportional to the conductor’s length.

Single Conductor 01

Conductor bridging a thermal difference

Use the following simulation to try out Fourier’s Law. (The simulation may take a moment to load).


See Fourier’s Law written as a Ruby program with instructions at GitHub, or see more information here.



1. Davies, T.W., “Fourier’s Law“,

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