Abstract
The paper presents the process of soap bubble development in a strong and highly non-uniform electric field obtained using a needle-plate electrode configuration. Bubbles ca. 43 mm in diameter were investigated in a point-plane electrode system with a 30 mm air gap and potential difference up to 14 kV The work includes a qualitative description of the observed phenomena as well as their quantitative evaluation. It was found that the polarity of the applied voltage has a significant effect on the behavior of the bubble in such electrode configuration. It was observed that changes in bubble height and width for positively charged bubbles are more than two times greater than for negatively-charged ones. The formation of a dimple at the top of the bubble caused by the ionic wind was also observed.
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