Changes between Version 13 and Version 14 of SelfGravityDevel

Timestamp:

03/05/12 13:44:29 (13 years ago)

Author:

Baowei Liu

Comment:

—

SelfGravityDevel

@@ -8 +8 @@
 The electric field generated by a point charge [[latex($Q$)]] is
 
-[[latex($E=\frac{1}{4\pi\epsilon_{0}}\frac{Q}{r}$)]]
+ [[latex($E=\frac{1}{4\pi\epsilon_{0}}\frac{Q}{r}$)]]
 
 On the other hand, the gravitational acceleration by a point mass of [[latex($M$)]] is
 
-[[latex($g=-G\frac{M}{r^{2}}$)]]  [[BR]]
+ [[latex($g=-G\frac{M}{r^{2}}$)]]  [[BR]]
 
 The Poisson equation for electrostatic potential [[latex($\phi_{e}$)]] is 
 
-[[latex($\nabla^{2}\phi=-\frac{\rho}{\epsilon_{0}}$)]]
+ [[latex($\nabla^{2}\phi=-\frac{\rho}{\epsilon_{0}}$)]]
 
 Analytically  we can get the Poisson equation for the gravity
 
-[[latex($\nabla^{2}\phi=4\pi G\rho$)]]
+ [[latex($\nabla^{2}\phi=4\pi G\rho$)]]
 
 where [[latex($\rho$)]] is the mass density. This equation describes how the potential [[latex($\phi$)]] is determined by the mass density distribution.
@@ -26 +26 @@
 For example, consider the uniform density distribution
 
+{{{
+#!latex
+\begin{equation}\label{eq:uniDensity}
+\rho=\begin{cases} \rho_{0}, &r<R \\
+                   0, & r\ge R 
+     \end{cases}
+\end{equation}
+}}}
 
 == Implementation ==