Abstract
WHEN measuring the electrical breakdown strength of lead glass sheets with 1-cm.-diam. sphere electrodes subjected to 0.1/1,500 µsec. voltage pulses it was found that the secondary effects, usually present when transformer oil or similar immersion media are used, could be eliminated by using low-conductivity water as the immersion medium. Under these conditions when the edge effects were suppressed it was observed that the breakdown took place after a time delay in the range of 10−7–10−4 sec. The distribution of these time delays was found to be random. The results fit the relationship: 
where n is the number of observed time lags within any time t; n
0 is the total number of time lags observed; τ is a constant.
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AZAM, M., DICKINSON, H. Time-lags in the Intrinsic Electrical Breakdown of Glass. Nature 186, 146 (1960). https://doi.org/10.1038/186146a0
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DOI: https://doi.org/10.1038/186146a0
