Streamer Propagation in Liquids and over Liquid-Solid Interfaces

The recent activity in the area of pre-breakdown streamer development has produced a considerable quantity of data characterizing the phenomena. It is not the aim of this paper to review this work in detail, much of which has been discussed in two recent reviews [1,2]. Rather we hope to point out from this work in non-uniform field geometries, some interesting observationswhich are striking and could offer insight into the mechanisms operative, yet at present remainunexplained.