a website collaboration between Science Service and the 

Smithsonian Institution

no date - circuit breakers for safeguarding America's power lines

LIGHTNING TEST

E&MP 72.061

Artificial Lightning

no date

HIGH VOLTAGE ELECTRICAL TESTING

Circuit breakers for safeguarding America's power lines are given rigid high voltage tests before shipment from Westinghouse's East Pittsburgh Works.

LIGHTNING TEST

Artificial lightning flashing across the arc between the two huge ball electrodes at the Westinghouse Electric & Manufacturing Company's East Pittsburgh Works, where transformers and circuit breakers are given rigid high voltage tests before being put into service on America's power lines.

MAN-MADE LIGHTNING

Circuit breakers for safeguarding America's power lines are given rigid high voltage tests before shipment from the East Pittsburgh Works of the Westinghouse Electric and Manufacturing Company. This photo shows test in progress with a volt [sic] of "artificial lightning" passing between the huge ball electrodes of the testing apparatus.

230987
616

Original Caption by Science Service
Westinghouse



National Museum of American History

Home

Search - Site Map - Subjects to Choose From - Numbering Format

Credits - Copyright - Comments