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Phase-space distribution function

For an isotropic gas, averaging the momentum flux over directions gives
$$
P=g\int\frac{d^3p}{(2\pi)^3}\frac{\mathbf p^2}{3E(\mathbf p)}f(\mathbf p).
$$


Kinetic pressure of an isotropic gas

Ideal gas pressure from wall collisions

Past exam of the mathematics course of the University of Cambridge / 2017 / iii / Paper 317 / 4 / Solution

Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 310 / 1 / a / ii / Solution

Pressure tensor

Kinetic pressure of an isotropic gas

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Kinetic pressure of an isotropic gas

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