Adjust the values of [math]\rho[/math], [math]\theta[/math], [math]\varphi[/math], [math]\Delta\rho[/math], [math]\Delta\theta[/math], and [math]\Delta\varphi[/math] to see how the small spherical volume changes. Note that this volume has approximate dimensions [math](\rho\Delta\varphi)\times(\rho\sin\varphi\Delta\theta)\times\Delta\rho=\rho^2\sin\varphi\Delta\rho\Delta\theta\Delta\varphi[/math].