Аннотация: Human genius has so far been unable to understand the characteristics of water, that simplest substance comprised of three atoms, inappropriately splashing underfoot and pouring down, resulting in many worries and at the same time vitally important. And this despite the fact that dozens of frequently competing sciences deal with water studies. For example, at the end of the 19th century, hydromechanics was offensively named hydraulics, as a pseudoscience in which the shortcomings of theory are compensated for by the inaccuracy of empirical coefficients. Hydraulic scientists are people with a purely practical turn of mind, and they will counter that their dams, canals and bridges, erected based on their completely approximate formulas, have existed for centuries; yet those wise pillars of hydrodynamics are still incapable of deriving exact equations for the energy balance of water flow, even for the city gutter. It was even necessary to invent a special science – the study of stalagmology, as the behavior of only one drop of water in different conditions is described by a great number of complicated mathematical expressions.