⌦ ⌦⌫⌦
⌦⌫⌦ ⌫⌦
⌫⌫ ⌦⌫⌦ ⌦
⌦⌫⌦ ⌫⌦ ⌫⌫
⌫ ⌦⌫
⌦⌫ ⌫ ⌦⌫
⌫⌫⌫ ⌧
⌫
⌦ ⌫⌫
⌫ ⌫⌫
⌫ ⌦ ⌫⌫
⌫⌫ ⌦⌫⌦
⌫⌦⌫⌦⌫
⌫ ⌦ ⌫ ⌫
⌫
⌫ ⌫⌦
⌫ ⌫⌫ ⌦
⌦⌦
⌫
⌫⌦
⌫⌫
⌫
⌦ ⌫⌦ ⌦⌫
⌦
⌫ ⌫
⌫⌦ ⌫
⌫⌦
⌫ ⌦⌦
⌫⌦
⌦⌦⌫
⌫ ⌦⌫⌦
⌦
⌦⌫⌦ ⌫⌦
⌦
⌦ ⌫
⌧
⌧
⌫ ⌦⌫
⌦⌫ ⌫⌫
⌫
⌦
⌦⌫⌫
⌫⌫
⌦⌫
⌫⌫
⌧ ⌫
⌫
⌫⌦⌫
⌦
⌫
⌦⌦
⌫⌦
⌦⌫
⌦⌫⌦
⌦⌫⌦⌫
⌫⌫⌫
⌫ ⌦
⌫ ⌫⌫
⌦⌦
⌫
⌫ ⌫
⌦⌫
⌫ ⌫
⌦⌫
⌫
⌫ ⌦
⌦
⌫⌫
⌦ ⌫
⌧ ⌫
⌦
⌫
⌦⌦
⌫
⌫
⌫⌫⌦⌦
⌫
⌦
⌫⌦ ⌦
⌦
⌦
⌫
⌦⌦⌫
⌫⌦
⌫⌦
⌦
⌦
⌫⌫
⌫
⌫⌦⌫
⌫ ⌫
⌫⌫
⌫⌫
⌦
⌫ ⌫ ⌫
⌦
⌧
⌧
⌧
⌫
⌫⌦
⌦
⌦⌫⌦ ⌦⌫
⌫
⌦
⌫⌫
⌦⌫⌦ ⌦⌦
⌫
⌫
⌫⌫
⌫ ⌫⌫
⌦ ⌦
⌦⌦⌫⌫ ⌫⌦⌫
⌦ ⌦⌫⌦
⌦⌫
⌦⌦
⌫
⌫⌫
⌫
⌫
⌫
1 Ne2
n N
= +
⌦
⌦⌫⌦
⌦⌫⌫⌫ ⌦⌫
⌦ ⌫ ⌫⌫⌦
⌫
⌫⌫
⌫ ⌫⌫
⌧
⌫
⌦
⌫⌫⌦
⌫⌫⌫
⌦
⌫⌫⌫
⌫ ⌫
⌫⌫⌫⌫⌫ ⌫
⌫
⌦⌫
⌦⌫⌦
⌫⌫
⌫ ⌦⌫⌫
⌫⌦
⌦⌦⌫⌫
⌫⌫ ⌦
⌫ ⌦⌫⌦
⌦ ⌫
⌫⌦
⌫ ⌫⌫
⌦⌫⌫
⌦
⌫⌫⌦
⌫ ⌦⌦
⌫ ⌫⌫⌫⌦
⌫
⌫
⌫⌫⌦
⌫
⌦
⌫⌦
⌫
⌫
⌦
⌦⌫
⌫
⌫
⌦⌫
⌦ ⌫
⌫ ⌫
⌫⌦
⌫
⌫
⌫
⌫ ⌫
⌫⌫
⌫ ⌦
⌫
⌫⌫⌫
⌫⌦
⌫
⌫⌦
⌦
⌦
⌫⌦
⌦ ⌦
⌫
⌦⌫⌫
⌦⌫⌫ ⌫⌦
⌫⌦
⌦
⌫
⌫
⌦⌫
⌦⌫⌦⌦
⌫
⌦
⌫
⌦⌫
⌫
⌫⌫
⌦⌫
⌦
⌫
⌫
⌫⌦ ⌫⌦
⌫⌦ ⌫
⌫⌫ ⌫
⌫ ⌦⌫
⌫⌫⌫
⌫⌫⌦
⌫ ⌦
⌫⌫
⌦⌦
⌦
⌦
⌫⌫ ⌦⌫⌦
⌫⌫
⌦⌫
⌫
⌫
⌫ ⌦⌫
⌫ ⌫⌫
⌦
⌦⌫ ⌫
⌫ ⌫⌫
⌦
⌫⌦⌦
⌫
⌫
⌫ ⌫⌦
⌫
⌫
⌫
⌦⌫
⌦ ⌫
⌦ ⌫
⌦
⌦⌦
⌦ ⌫
⌦
⌦⌦
⌦
⌦
⌦
⌦
⌦
⌦
⌫
⌫ ⌫⌦
⌦
⌫
⌫
⌫⌫
☺
u&& o&&
☺
⌧
☺
☺
⌫⌫
⌦ ⌫
⌫
⌫
⌦ ⌫⌫⌫
&o
o&
⌫