WOOD PLANK AFTER ARTIFICIAL LIGHTNING
November 6, 1936
Among the startling demonstrations of scientific possibilities, one of the most thrilling is the shattering of a two-by-ten plank of fir wood by flashes of lightning in the high voltage laboratory of the Westinghouse Electric and Manufacturing Company.
Special apparatus developed 3,000,000 volts of electricity and this was discharged into the plank to demonstrate that the notion of actual lightning is to shatter and splinter the timber until it has an appearance that is almost feathery.
Original Caption by Science Service