And that will also create an instantaneous dipole moment that points in the following general direction. And so what that means is these instantaneous partial charges will attract each other as a result of an electric force forest. And that is what a London dispersion forest is. Now, London dispersion forces are the weakest because these exist only for a moment in time. So at one moment they exist, and another moment they don't exist, and a third moment, they exist once again. And so that's why they're the weakest types.