Wvo no mv hvo+moc2=hv+mc2 入0 n m 1 Cθ ϕ 0 0 n c hν r - h n c ν r vm r 2 2 ν 00 ν +=+ mchcmh vmn h n h rrr += λ λ 0 0 2 2 0 1 c v m m − =