From the January 27, 1934, issue

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FLASH-OVER AT 125,000 VOLTS

Beauty is, indeed, the most important if not the only reason for the choice of this week’s front-cover picture. A glass insulator, of the kind that electrically isolates high-tension [power lines] so that they may carry their power uninterruptedly, is shown flashing over after withstanding a potential of 125,000 volts.