Abstract
The apparatus and method are described by which the separation of electrostatic charge between similar polyethylene spheres, initially at different temperatures, during an impulsive contact has been observed. The amount of such a charge separation varies during a series of observations both progressively and randomly. A component of this charge separation is shown to depend upon the direction of the thermal gradient across the interface. The progressive variation in charge separation with number of impacts is shown to be consistent with a transfer of `active centres' from one surface to the other. The quantity of charge which separates between two surfaces is also shown to vary with different contact areas on one surface.
Published Version
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