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1938 - Harry S. Bernstein selects lamps at random from the large lots bought by the government

UNCLE SAM

CD 1963105 E&MP 25.045

Electric Lamps

June 1938

Uncle Sam uses millions of electric light bulbs a year.

If any large number of them were of inferior quality and did not last as long as they should, the Federal government's loss would be large.

So Bureau of Standards technicians, such as Harry S. Bernstein here, selects lamps at random from the large lots bought by the government and keeps them lit until they burn out, noting the length of service they give.


Original Caption by Science Service
copyright National Bureau of Standards



National Museum of American History

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