放射強制力
Δ F = 0.12 × ( N − N 0 ) − { f ( M 0 , N ) − f ( M 0 , N 0 ) } {\displaystyle \Delta F=0.12\times ({\sqrt {N}}-{\sqrt {N_{0}}})-\left\{f(M_{0},N)-f(M_{0},N_{0})\right\}}