The Electric Charge on Sprayed Oil Droplets 3 (The Mechanism of Electrification of Sprayed Oil Droplets)

摘要

In order to investigate the mechanism of electrification of sprayed oil droplets, using two kinds of lubricating oil, the electric charge of sprayed oil droplets were measured. The measurement was carried out using Millikan's oil drop method, and the dependence of the quantity of the charge on oil droplets upon the friction between the droplets and air, upon the friction between oil andthe oil vessel of atomizer before spraying, and uopn the air-pressure in spraying, was investigated.The results of measurement showed that the friction and the spraying-pressure do not give any definite effect on the electrification of oil droplets.This fact suggests that the electrification of oil droplets occurs when oil breaks up into droplets.