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how good electrical cord will be after months or years of use is foretold by the bomb test

BOMBS USED TO PROVE ELECTRIC CORD SAFE

E&MP 41.005

Electric Wire

no date

How good electrical cord will be after months or years of use is foretold by the "bomb test" conducted at Underwriters' Laboratories.

While usherette LaVerne watches, cord engineer Ed Wagner places samples in the steel container where they will be 'bombarded' with pure oxygen at high pressure to cause rapid aging.


Original Caption by Science Service
© Underwriters' Laboratories



National Museum of American History

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