Corona Discharge

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Because of the desirability of a greater knowledge of the direct current corona, the Physics and Electrical Engineering Departments of the University of Illinois determined to carry out detailed research to develop a satisfactory theory for the corona phenomena. It is the purpose of this bulletin to present the results of the research which has been completed during the last few years.