Abstract
The subject of consideration is instability of the flat meniscus of a viscous liquid at the end of a capillary in the gravitational field and an electrostatic field when the symmetry axis of the capillary is arbitrarily oriented relative to the direction of free-fall acceleration. It is shown that, if the electrostatic field strength is high, the development of meniscus instability does not depend on the orientation of the capillary. The instability growth rate versus wavenumber dependence for annular waves of different types on the meniscus surface is found to be nonmonotonic.
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