According to the actual volume of gas molecule and effort between molecules influencing the gas action, in the Van der Waal formula of ideal gas state, the amending terms of n~2a/v~2 and nb is introduced and then the formula (p+n~2a/v~2)(v-nb)=nRT forms to describe the actual gas action.
范德华针对实际气体分子自身体积和分子间作用力对气体行为的影响,在理想气体状态方程式中引入修正项n2aV2)(V-nb)=V2和nb而得出描述实际气体行为的方程式———范德华方程式(P+n2anRT。