From the June 25, 1932, issue

ARTIFICIAL LIGHTNING FLASHED AT 10 MILLION VOLTS

The most powerful manmade lightning is flashing across the cover of this week’s Science News Letter from new equipment in the Pittsfield laboratories of the General Electric Co., which has twice the capacity of any preceding apparatus of its kind.

This is a discharge through a 15-foot space of 50,000 amperes at 10,000,000 volts.