sodium vapor lamp
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sodium vapor lamp
n. A highly energy-efficient electric lamp containing a small amount of sodium, neon, and argon, used in generating yellow light for lighting streets and highways.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive
Supply of projectors with
sodium vapor lamps & other (Albani) projectors.
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