how about this then.

Newton tried to quantify and predict fluid flow phenomena through his elementary Newtonian physical equations. His contributions to fluid mechanics included his second law: F=m.a, the concept of Newtonian viscosity in which stress and the rate of strain vary linearly, the reciprocity principle: the force applied upon a stationary object by a moving fluid is equal to the change in momentum of the fluid as it deflects around the front of the object, and the relationship between the speed of waves at a liquid surface and their wavelength.