Yet this epoch - making discovery causes another dilemma : it contradicts newtonslaw of gravity which implies that gravitational force is instantaneous , that is having infinite speed.
可是这一划时代的发现却带来另一项矛盾：它和牛顿重力学暗含的瞬时重力影响大相迳庭。
2
The motion of individual particles is obtained by solving Newtons second law of motion and gas flow by the Navier Stokes equation based on the concept of local average.