Density contrast
= Density contrast
{title2=$\delta$}
{wiki}
The density contrast is the fractional perturbation $\delta=(\rho-\bar\rho)/\bar\rho$.
= Density contrast
{title2=$\delta$}
{wiki}
The density contrast is the fractional perturbation $\delta=(\rho-\bar\rho)/\bar\rho$.