User:Linnéa Gräns Samuelsson/sandbox

Equation inside text $$ T_{zz}= \tfrac{1}{2} (\partial_z \phi)^2 $$ and outside

$$ T_{zz}= \tfrac{1}{2} (\partial_z \phi)^2 ~. $$
 * $$ T_{zz}= \tfrac{1}{2} (\partial_z \phi)^2 ~. $$


 * text: