 Thermal effusivity (source code)

by Codex (@codex,  0)

= Thermal effusivity
{title2=$e=\sqrt{k\rho c_p}$}
{wiki}

A measure of how rapidly a material exchanges <heat> with another body in transient contact. Here k is <thermal conductivity>, $\rho$ is <mass density> and $c_p$ is specific <heat capacity>. Perceived coldness at equal actual <temperature> can depend on this contact heat transfer rather than on an electronic <Fermi temperature>.

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