Abstract
An experiment is described in which a sharp metal point, kept at a high potential, is mounted in a wind tunnel and the resulting point discharge current is measured at different wind speeds. It has been observed that at low winds the current first decreases with increasing winds, and then, as the wind speed further increases the point-discharge current, after reaching a minimum, shows a monotonous increase. From logical considerations of possible paths of ions and their movement under combined influence of wind and electric field, the observed behaviour of point discharge current seems quite natural and justified.
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