Rezumat
CZU 532.5:537.2
DOI https://doi.org/10.52577/eom.2021.57.4.15
The paper deals with some peculiarities of realization of electrostatic instability of a charged liquid surface on the vertices of the charged and uncharged drops in an external electrostatic field in a cylindrical jet and a flat surface. It was shown that the critical values of the surface density of the electric charge under the mentioned conditions on the threshold of the realization of instability are different in magnitude, despite the phenomenological similarity. Most probably, the reason is the differences (under all mentioned conditions) in the spatial change in the strength of the electrostatic field in the vicinity of the growing (when the charged surface of the liquid is unstable) emission protrusion. Both equilibrium and non-equilibrium forms of droplets, jets, planes and their symmetry were discussed.
Keywords: spherical drop, spheroidal drop, plane, jet, surface charge density.