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1939 - W.A. Ruggles indicates with his pencil one of the dozen glass bulbs which form the cases of the bombs

MINIATURE SODIUM BOMBS

CD 1966004 E&MP27.086

Electric Lighting

April 8, 1939

W. A. Ruggles of the General Electric Company Research Laboratory is shown with the glass system which produces miniature sodium "bombs" for sodium vapor lamps. Mr. Ruggles indicates with his pencil one of the dozen glass bulbs which form the cases of the "bombs".


[a closer look]


Original Caption by Science Service
General Electric



National Museum of American History

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