Abstract

Continuing the work of S. W. J. Smith and H. Moss upon the relation between the length of a capillary jet and its velocity of efflux from a cylindrical orifice, further examination has been made of the causes to which the main features of the curves obtained by these authors are due. Such curves consist of two main branches. In the first, with increasing velocity, the jet length rises until a critical point is reached. In the second, which begins at this point, the jet length diminishes rapidly with further increase of velocity. The results contained in the present Paper indicate that, while surface tension is of prime importance in the first parts of these curves, viscosity is the dominating factor in the second. A general dimensional formula which covers both cases is derived.

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