Isothermal sound speed
= Isothermal sound speed
{title2=$a_i$}
The isothermal sound speed is $a_i^2=(\partial p/\partial\rho)_T$. For an ideal gas it is $a_i^2=p/\rho=\mathcal R T/\mu$.
= Isothermal sound speed
{title2=$a_i$}
The isothermal sound speed is $a_i^2=(\partial p/\partial\rho)_T$. For an ideal gas it is $a_i^2=p/\rho=\mathcal R T/\mu$.