Abstract
The phenomena with relation to fluid mechanics are often taken up in scientific books for popular readers. However, the explanation on principle of them has been described under misunderstood knowledge on fluid mechanics in many books. It seems the reason that the many authors are not understood fluid mechanics enough. Also, there is the further reasons in the descriptions involved mistaken explanations in many books. In present study the mechanism of transmission of so misunderstood explanations has been considered, and the diffusion of them has been investigated on principle on a spray. It is also examined and proposed how to prevent the transmission and diffusion of the misunderstood knowledge.
