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Dr. Harvey C. Rentschler experimenting with a Hot Cathode Positive Column Zinc Arc Lamp

ZINC ARC LAMP

E&MP 94.022

Photo Electric Cells

no date

Dr. Harvey C. Rentschler, director of Research, Westinghouse Lamp Company, experimenting with a Hot Cathode Positive Column Zinc Arc Lamp.

It is a laboratory source of red and blue light and produced by passing a current through a mixture of argon gas and zinc vapor.

The predominating color of the light is red.



Original Caption by Science Service
©Westinghouse lamp Company



National Museum of American History

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