L = ∮ p n ⋅ k d S , displaystyle L=oint pmathbf n cdot mathbf k ;mathrm d S, Because the velocity is deduced from the vorticity in such theories, some authors describe your situation to indicate which the vorticity is the reason for the velocity perturbations, working with https://louisucjrw.wikikali.com/1195270/5_easy_facts_about_garage_storage_lift_described