VIDEO MICROSCOPY OF ELECTRICAL AND WATER TREES

Qualitative and quantitative procedures are described for the investig ation of water and electrical trees by means of computer-aided video m icroscopy. It is shown that, for tree observation, the methods of dark field, phase contrast, fluorescent microscopy and asymmetric illumina tion contrast are effective. From the viewpoint of quantitative inform ation, measurements of luminescence intensity and optical density are of interest. (C) 1997 Elsevier Science Ltd. All rights reserved.